United States
Environmental Protection
Agency
Office of Air Quality
Planning and Standards
Research Triangle Park NC 27711
EPA-450/4-91-020
August 1991
Air
&EPA Office of Air Quality Planning
and Standards (OAQPS)
Technology Transfer Network (TTN)
User's Manual
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EPA-450/4-91-020
Office of Air Quality Planning
and Standards (OAQPS)
Technology Transfer Network (TTN)
User's Manual
Prepared for
U.S. ENVIRONMENTAL PROTECTION AGENCY
Office of Air Quality Planning and Standards
Technical Support Division (MD-14)
Research Triangle Park, NC 27711
August 1991
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DISCLAIMER
This report has been reviewed by the Office of Air
Quality Planning and Standards, U.S. Environmental Protection
Agency, and has been approved for publication. Any mention of
trade names or commercial products is not intended to
constitute endorsement or recommendation for use.
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OAQPS TECHNOLOGY TRANSFER NETWORK
USERS MANUAL
TABLE OF CONTENTS
1 INTRODUCTION 1
1.1 What is an Electronic Bulletin Board System .. 2
1.2 What is the OAQPS TTN 2
1.3 Major Features of the TTN 4
1.4 What you need to access the TTN 5
2 HOW TO USE THE OAQPS TTN 7
2.1 Configuring Your System 8
2.2 Making a Connection 9
2.3 Logging on for the first time 10
2.4 New User Registration 13
2.5 Logging on as a registered user 14
3 SYSTEM FEATURES ' 15
3.1 Multiple Bulletin Board Systems 16
3.2 File Transfers 17
3 . 3 File Transfer Protocols 17
3.4 File Downloading 18
3.5 File Uploading 22
3.6 Messages -. 25
3.6.1 Private Messages 25
3.6.2 Public Messages 33
3.7 Utilities 37
3 . 8 Online Conferencing 39
3 .9 Data Base Online Applications 43
3.10 Subject Conferencing 43
3.11. Help/Information 44
4 TTN TIME SAVING TECHNIQUES 45
4 .1 Archived Files 46
4 . 2 Command Stacking 49
4 . 3 High Speed Modems 49
4 .4 Hot Keys, Pause and Stop 50
5 GETTING HELP 51
111
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TABLE OF CONTENTS (Continued)
APPENDIX A: BBS COMMANDS 53
User Profile Configuration Commands 55
File Downloading Comj»a"dg 59
Message Entry commands 65
Message Retrieval Connaandg 69
Online Conference Commands 73
APPENDIX B: ACCESS THRU ETHERNET AND PORT SELECTORS 75
APPENDIX C: GLOSSARY OF COMMUNICATIONS TERMS 83
APPENDIX D: BULLETIN BOARD DESCRIPTIONS 89
IV
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SECTION 1
INTRODUCTION
The Office of Air Quality Planning and Standards (OAQPS)
has been charged by Congress under the Clean Air Act to
protect and enhance the quality of the Nation's air resources
to promote public health and welfare. OAQPS is responsible
for developing national programs, technical polices,
regulations, guidelines and criteria for air pollution
control. OAQPS supports activities by State and local
governments for the prevention and control of air pollution.
The Office of Air Quality Planning and Standards (OAQPS)
Technology Transfer Network (TTN) is an electronic bulletin
board system that is used to facilitate communications and
disseminate technical information among EPA staff, EPA
Regional Offices, and State and local agencies. The TTN also
provides communication and information services to private
industry, environmental consultants, educational institutions
and individuals engaged in environmental issues and projects.
This guide describes how to access the OAQPS TTN and
explains the commands and features of the system. The most
recent version of this manual is always available for
downloading from the System Utilities Menu of the TTN under
the menu item "TTN User's Manual". It is located in the file
MANUAL.ZIP.
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1.1.
A Bulletin Board System (BBS) is a computer system
comprised of hardware and software that receives telephone
calls from other computers. The BBS concept began as a means
for users to enter messages and read messages addressed to
them by other users. Today's BBS performs a variety of
services that include the exchange of programs, software,
databases and files of all descriptions. The most important
function of a BBS is to expedite and promote the exchange of
information through easy and friendly access. Users are free
to visit at their own convenience to scan messages and pick
those that are of particular interest and exchange information
over long distances and at high speeds. The configuration of
each BBS is unique because of the variety of computers,
communications equipment and software available to develop a
system.
1.2. WHAT IS THE OAQPS TTN?
The OAQPS Technology Transfer Network (TTN) is a multiple
bulletin board system offering the caller access to several
technically oriented bulletin boards by dialing only one phone
number. The network is designed to facilitate communications
and provide access to information and technology related to
air pollution. The purpose of the network is to foster
technology transfer among all parties interested in the
solution of the nation's air pollution problems. The network
is also designed to be user-friendly and readily accessible
from anywhere in the country. It is a forum for technical
interchange at the working level among EPA, State and local
agencies and the private sector.
The OAQPS TTN runs on an AT class microcomputer. The
computer runs at 33 megahertz clock speed and has over 800
megabytes of disk storage provided by two hard disk drives.
The hard disks ara controlled by a Small Computer System
Interface (SCSI) disk controller. The TTN software is the 32
line version of The Bread Board System (TBBS), by eSoft, Inc.
The system can support 32 users at one time simultaneously
downloading the same software, sharing the same files and
messages on the system. The system has the capability of
executing online and sharing programs written and compiled
using a subset of data base computer language code.
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Presently, the Technology Transfer Network is comprised
of the following bulletin boards:
OAQPS - Office of Air Quality Planning and Standards
EMTIC - Emission Measurement Technical Information
Center
SCRAM - Support Center for Regulatory Air Models
CHIEF - Clearinghouse for Inventories and Emission
Factors
CAAA - Clean Air Act Amendments
APTI - Air Pollution Training Institute
CTC - Control Technology Center
The following are bulletin boards that are planned for
the near future:
AMTIC - Ambient Monitoring Technical Information Center
To be implemented late 1991.
AIRS - Aerometric Information Retrieval System
Planned for the future.
NSR - New Source Review
Planned for the future.
See Appendix D, Bulletin Board Descriptions, for a more
detailed description of each BBS presently in the TTN.
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1.3. MAJOR FEATURES 01
The TTN is a multi-board system that supports complete
and separate BBS systems. The user has access to many BBS
systems by simply dialing one telephone number. The TTN
provides utility features that are applicable to all boards
but each BBS within the TTN has certain features that are
unique. The major features of the OAQPS TTN include:
o File Transfer; Each BBS within the TTN has a variety of
files, programs and databases that can be downloaded to
a PC. You can transfer these files from the TTN by using
an appropriate communications software program and a
modem. You can also upload files to the TTN for use by
others.
o Electronic Messages; E-MAIL messages are exchanged with
other TTN users. Private messages can be exchanged with
specific individuals that only the sender and receiver
can see. Most TTN boards also provide public messages
that all can read in order to promote open discussions
for anyone interested in responding to technical
questions and issues pertaining to a particular board.
o Utilities: A number of utilities are provided that make
life easier and fun for the TTN user. Such things as a
online registry search, recent callers, top downloads,
who else is on the system and many more items of interest
are available.
o Online Conferencing: Callers can communicate online with
other callers who are currently logged on to the system.
Public and private online conferences are provided.
o Data Base Online Applications; A number of
applications are provided that can be executed and
shared online by TTN users. These applications are
data base programs that are written and compiled
for real time execution on the TTN.
o Subject Conferencing; On some bulletin boards,
conferences are provided that are dedicated to a specific
subject area. You may exchange messages of interest with
other members of the conference.
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1.4. WHAT YOU NEED TO ACCESS THE TTN
There are three basic components that you will need in
order to access the TTN. You will need the following:
Personal Computer or Terminal: Almost any computer or
terminal will suffice, as long as it can connect via a
modem to a telephone line. Using a computer is
preferable to using a terminal since it will allow
additional capabilities such as transferring files
between your computer and the TTN. An AT compatible
computer is recommended for the highest compatibility
with the TTN.
Modem: A modem is used to connect your computer or
terminal to the telephone line. Almost any 1200 or 2400
baud modem will work. Cables and telephone jacks are
required to connect your modem to your computer or
terminal and to the telephone system. Service is also
provided for 9600 baud modems that adhere to the V.32
standard for 9600 baud modems.
o Communications Program; Communications software is
necessary if you are using a computer to connect to the
TTN. Terminals have built-in communications programs.
You need to make sure that the communications program you
select is compatible with your computer and modem. For
the highest compatibility with the TTN, choose a program
that can support Xmodem, Ymodem, Kermit or Zmodem file
transfer protocols. In order to display PC graphics and
colors properly your program should support VT100 or
VT102 terminal emulation.
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SECTION 2
HOW TO USE THE OAQPS TTN
Before connecting to the OAQPS TTN, you must first set
certain parameters in your terminal or communications program
so that your system speaks the same language as the TTN. Most
communications programs have a "setup" or "communication
parameters" screen that allows you to make these settings.
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2.1.
CONFIGURING YOUR SYSTEM
You must set your system to operate at 1200, 2400 or 9600
baud (depending upon your modem's capabilities), 8 data bits,
1 stop bit and no parity. If you dial up the TTN and receive
unintelligible character strings or cannot get further than
the initial prompts for the name and location you are calling
from, then it is very likely that one or more of these
parameters have not been set correctly in your system. If
this happens, hang up, reset these parameters and dial again.
The following table lists the required and optional parameters
for getting the most out of the TTN display:
1) Name
2) Number
3) Data Bits
4) Parity
5) Stop Bit
6) Emulation
7) Duplex
OAQPS TTN
(919) 541-5742
(919) 541-1447
8
None
1
VT100
Full
Optional; name in your
dialing directory.
Required; 1200/2400 baud
Required; 9600 baud
Use area codes, "9" or "8"
prefix where appropriate.
Required
Required
Required
Optional; required to
display PC graphics and
colors, if your system
supports it.
Required
There are often many other settings that can be made on
a terminal or in a communications program. The other settings
will most likely depend on your computer, modem or your own
personal preferences.
Computer communications is often confusing and
frustrating even for the experienced computer user. It is
far beyond the scope of this document to cover the cryptic
vocabulary, profusion of parameters and diversity of equipment
possible in this field. If you are a novice or have trouble
getting your equipment or software to work correctly, we
suggest that you find someone in your office who can help you
get through the first session.
8
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2.2. MAKING A CONNECTION
Once you have made the settings as described in the above
section, "Configuring Your System", you are ready to dial up
the TTN. Be sure to set your modem to call (919) 541-5742 for
2400/1200 baud or (919) 541-1447 for 9600 baud.
If your modem allows you to monitor the call, you will
hear the number being dialed, one or two rings, then the phone
being answered, a high-pitched tone (the carrier signal from
the TTN modem) and another high-pitched tone (your own modem's
carrier signal). If you cannot hear what is going on, then
wait patiently; it usually takes several seconds for a
connection to be made.
As soon as a connection is made, your computer will
usually notify you with the message "CONNECT" or "CONNECT
2400". If nothing happens within a reasonable period of time,
then hang up and return to the "Configuring Your System"
section above to make sure your communications parameters are
set correctly. You might also check to see if you are using
the right type of cable to connect your modem to your computer
or terminal and that the modem is properly connected to the
telephone system.
If you hear a busy signal when you dial'in, then all of
the phone lines to the TTN are already in use by other
callers. Try calling back in a few minutes.
If the phone does not answer when you dial in, then the
Board is most likely not available, either due to routine
maintenance or because of some unexpected malfunction. TTN
routine maintenance occurs every Monday morning from 8:00 AM
to 12:00 Noon eastern time. This time is reserved for system
maintenance and backup.
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2.3,
LOGGING ON FOR THE FIRST TIME
Once you have successfully connected to the TTN you will
see the TTN "welcome" screen similar to the following:
_OAQPS_
Technology
Transfer
Network
) *Welcoie to OAQPS Technology Transfer Network*
Operated by
Office of Air Quality Planning and Standards
Environmental Protection Agency
v
1 1 J J I I
ft/Iff
++
_oo
_\
I -i I XXXXXXXXXXXXXXX XX XX \
/ X X XXXXXXXXXXXXXXXXX XX XX \
I , ,_1r_ L.^nml,^____
* Prograi Manager: Jerry Hersch *
4 4
* Systei Manager: Hersch Rorex *
***********************************
Hayes (2400/1200/300): (919) 541-5742
Hst Dual Standard 9600: (919) 541-1447
Voice/help line: (919) 541-5384
This screen contains information that identifies the
Program and System managers, telephone numbers for the various
modem speeds and where to call for help.
After the welcome screen you will see the prompt:
First Name?
Respond to this prompt with your real first name.
Company or generic names are not permitted. Do not use made
up names or "handles". Not following these guidelines could
cause your registration to be rejected. Press return after
you have entered your first name.
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The next prompt you see is:
Last: Name?
Enter your real last name. It is important that you
enter both your first and last names accurately and use
exactly the same name every time you logon to the TTN.
Otherwise, the TTN will .not find you in the user log of
authorized callers. For example, if you logon the first time
as William Smith and the next time as Bill Smith, the TTN will
take Bill Smith as a new and unregistered user.
The next prompt is:
Calling from (City,State)?
Enter the city and state you are calling from. This
information is stored by the system and is presented for
verification each time you logon.
Because this is your first time to logon, you will be
asked to supply information about your computer. The
"provided" answers to the following questions assume an IBM PC
or clone:
# Chars per line on screen(10-132)? 80
The following video terminal options are presented.
Enter F if you have an IBM PC or compatible.
VIDTEX TRS-80 1/3 ATARI
H19/H89/Z19 IBM PC TELEVID 925 VT-100
Enter letter of your terminal, if not listed: F
The System sets default values for various parameters
based on the terminal or computer type that was selected in
the previous question. If was selected, the following
defaults are set and printed as follows:
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Terminal Profile Set to:
ANSI codes Allowed
IBM Graphics Allowed
Upper/Lower Case
Line Feeds Needed
0 Nulls after each
If these values are correct for your computer, then
answer the next question as follows:
Do you wish to modify this? N
For computers or communications software that do not
support ANSI graphics or IBM graphics, answer the previous
question with a "Y". As a result of answering "Y" to the
above question, a further list of questions will follow.
Answer each of the following questions appropriately for your
particular computer:
Can your terminal display ANSI codes?
Can your terminal display IBM Graphics Characters?
These settings may be changed at any time from the
Systems Utilities menu by selecting hange Terminal
Configuration.
The next two questions determine how menus and text are
presented on the screen. The TTN menus are designed for 24
line screen displays. Answer the following questions as
follows:
Do you wish to have a pause after each display page (Y/N)? Y
How many lines per Display page (10-80)? 24
The next prompt provides for a password of your choosing
that will be required each time you logon to the system. The
prompt is as follows:
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Please Enter a 1-8 character Password to be used for
future logons. This password may contain any printable
characters you wish. Lower case is considered different
from upper case and imbedded blanks are legal. REMEMBER
THIS PASSWORD. You will need it to log on again.
Your Password?
After you have entered your password, a message appears
stating that you are caller number "nnn" and that you are
authorized 30 minutes for this call. Unregistered users are
given 30 minutes per call. A welcome letter will now be
displayed, followed by the TTN operating schedule.
2.4. NEW USER REGISTRATION
After having completed the events described in the above
section "LOGGING ON FOR THE FIRST TIME", you will be in the
Unregistered User's Main Menu. As an unregistered user,
access is limited to viewing the descriptions of each TTN BBS,
and browsing in the Systems Utilities Menu. Registering as a
new user is actually a two-step process.
First, you must provide the system with some basic
information that it keeps on all callers. Enter from the
Unregistered User's Main Menu and respond to the prompts for
Name, Address, Zip, Telephone, Company, and Board of primary
interest. Please, only specify one board that you have a
primary interest in for your specific needs. This gives the
systems operators some idea of the interest that is generated
for each BBS. Once registered you will have full and
unlimited access to all BBSs within the TTN usually the next
business day following registration. Please do not register
more than one time. Company or generic names are not allowed
and will not be registered. When responding to the prompt for
name, enter the same name under which you logged onto the TTN.
Second, all registrations are subject to review by the
systems operator. Registrations are reviewed each working day
morning following the registration day. Once registration has
been approved, you will have full access to the TTN.
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2.5. LOGGING ON AS A R]
The sequence of events when Logging onto the TTN as a
registered user are much different than the first time as a
new user. You will see the same "Welcome" screen that
identifies the Program and System manager, telephone numbers
for the various modem types/speeds and where to call for help.
You will respond to the following prompts:
First Name?
Last Name?
Calling from (City,State)?
Password?
The TTN will recognize you as a registered user, indicate
where you are calling from and ask you to verify your
location. You will then be informed if you have any messages
waiting and at this time be given the opportunity to read the
messages or wait until accessing a private E-MAIL area in one
of the TTN bulletin boards. You will then be placed in the
OAQPS TTN Registered Users TOP Menu. This is the menu in the
system that provides access to all TTN Bulletin Boards and the
Systems Utilities Menu.
14
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SECTION 3
SYSTEM FEATURES
The TTN has many features that a beginner will not be
familiar with unless he or she has some experience accessing
electronic bulletin boards, especially bulletin boards using
TBBS software from eSoft, Inc. The commands available in
bulletin board software are not exactly the same for every
system in today's market. However, once familiarity has been
gained with one particular system, commands can be related to
those of another.
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3.1
MULTIPLE BULLETIN BOARD SYSTEMS
The TTN is a multiple bulletin board system. The system
is presently comprised of seven BBSs. Not all of the features
described in this section are supported within each BBS since
some may not be appropriate to the functions of a specific
BBS. The TTN provides access to all BBSs under one telephone
number. The TTN Top Menu provides access to each BBS within
the TTN and the structure of the menu is as follows:
OAQPS TTN
REGISTERED USERS
TOP MENU
** OAQPS TTN Bulletin Board Systems **
OAQPS
<2> EMTIC
<3> SCRAM
<4> CHIEF
<5> CAAA
<6> APTI
<7> CTC
<8> AMTIC
BBS Descriptions
ystem Utilities
nline Conference
mail
oodbye
The Structure of this TOP MENU will change as new
bulletin boards are added to the TTN.
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3.2. FILE TRANSFERS
Transferring files between your computer and TTN is
called "downloading" and "uploading". Downloading occurs
when you request TTN to send a file "down" to your computer.
Uploading occurs when you send a file from your computer
"up" to TTN.
3.3. FILE TRANSFER PROTOCOLS
File transfer protocols (methods) defined and available
in communications software programs provide a means for
transferring files while communicating with various other
computers. Protocols provide a common denominator for file
transfer. Both sending and receiving computers must use the
same protocol for transferring files. The TTN provides the
following commonly used file transfer protocols:
XMODEM
YMODEM
KERMIT
SuperKERMIT
ZMODEM *
* Note: ZMODEM to be incorporated in the next version of TBBS
software due in the fall of 1991.
See Appendix A, BBS Commands, under "File Downloading
Commands" for a description of each file transfer protocol
option and the use of each protocol that'is available on the
TTN.
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3.4.
FILE DOWNLOADING
There are two steps involved in file downloading. The
first step involves setting up the TTN to send a file you have
chosen to download.
The second step involves setting your communications
software to receive the file. The second step is unique to
you-r software. The keystrokes involved in setting up your
software to receive a file vary according to the particular
communications software you are using to connect to the TTN.
Consult your communications software manual for instructions.
The two steps required for downloading are outlined
below:
Step 1 - Setting TTN to send a file
Select a file you wish to download from one of the TTN
download directories. The following download directory is a
typical directory from which a file can be downloaded:
Regulatory Models
Programs and instructions for dearchiving compressed files
can be found via ystems Utilities from the Top menu under
rchivers/dearchivers.
NAME
Bytes
Date
BLP.ARC
CALINE3.ZIP
COM2.ARC
CRSTER.ARC
EKMA1.ARC
EKMA2.ARC
EKMA3.ARC
ISCLT.ARC
ISCST.ARC
MPTER.ZIP
RAM.ARC
290682
52564
113441
141579
175440
143737
286553
240408
199685
109979
210913
3/30/90
6/13/91
5/08/89
2/21/90
6/06/90
3/27/90
6/06/90
1/10/90
2/12/91
4/16/91
1/24/90
Description
PC version EXE included.
PC version EXE included.
PC version EXE included.
PC version EXE included.
EKMA source/test cases.
EKMA PC EXE file.
EKMA Input Generator.
PC version EXE included.
PC version EXE included.
PC version EXE included.
PC version EXE included.
ownload, rotocol, xamine, ew, elp, or ist
Selection or to exit:
18
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Before downloading a file you must choose a download
protocol as discussed in section 3.3* If you wish, you may
set a download default protocol such that each time you
download a file the TTN will not ask what protocol to use and
will always use your default protocol. Default protocols can
be set from the Systems Utilities Menu under "hange
Terminal Configuration". All of the user profile
configuration commands are discussed in Appendix A, BBS
Commands, under User Profile Configuration Commands.
If you have already set a default protocol for
downloading, simply type the name of the file you want to
download and the TTN will give an estimate of the time
required to download the file and will be ready for a start
signal from your communications software. If not, type the
name of the file and TTN will present the following protocol
menu from which you must choose a protocol that your software
supports:
Select from the following transfer protocols:
1 - TYPE file to your screen
2 - ASCII with DC2/DC4 Capture
3 - ASCII only, no Control Codes
4 - XMODEM
5 - YMODEM/YMODEM-g
6 - YMODEM/YMODEM-g Batch
7 - SEALINK
8 - KERMIT
9 - SuperKermit (Sliding Windows)
Choose one (Q to Quit)? 4
The above example shows XMODEM as the download protocol
selected as a result of entering "4". TTN provides command
stacking, which means that multiple commands can be entered on
the same line separated by spaces. This eliminates some of
the keystrokes involved in setting up files for downloading
when a default protocol has not been set. The following
statement is an example of command stacking that will prepare
the TTN to downlead a file using the XMODEM protocol when a
default protocol is not in effect:
The "P" in the above command line is the command for a
transfer protocol selection from the protocol menu. The 4
selects protocol number 4, which is XMODEM, from the protocol
menu.
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Step 2 - Setting your software to receive a file
After step one has been completed, you will be given an
estimate of the time required to download at the baud rate
you are connected. A message will indicate that the download
process is awaiting a start signal from your communications
software:
(Awaiting Start Signal)
At this point you must prepare your communications
software to receive a file using the same protocol that you
selected from the TTN protocol menu or your default protocol.
The procedure for doing this requires familiarity with your
software. You should refer to your documentation, user's
guide or reference manual for instructions pertaining to your
particular software.
The following are provided as examples of the keystrokes
required for setting up PROCOMM or PCPLUS and CROSSTALK
(XTALK) to receive files:
*** THE KEYSTROKES REQUIRED TO DOWNLOAD FOR PROCOMM OR PCPLUS:
Press the "page down" key on your keyboard. The
PROCOMM protocol menu is displayed. Select the
same protocol you selected from the TTN protocol
menu and press .
If you have chosen KERMIT as your transfer protocol, the
download begins and upon completion the file will appear in
the PROCOMM or PCPLUS directory of your computer.
If you have chosen XMODEM or some other protocol that
allows file renaming or file redirection, you will be prompted
for a file name. At this time, if you wish, you can enter a
path to direct the file to some other drive or directory. The
following prompt appears:
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Receive XMODEM
Please enter filename:
The following statement would direct the file to your
floppy drive A:
*** THE KEYSTROKES REQUIRED TO DOWNLOAD USING CROSSTALK ARE:
Press the Home Key on your keyboard
CROSSTALK responds with a command prompt at the bottom of
your screen in the form of a question: "COMMAND?"
CROSSTALK command to receive using XMODEM
or
CROSSTALK command to receive using KERMIT
If you have chosen KERMIT as your transfer protocol, the
download begins and upon completion the file will appear in
the CROSSTALK directory of your computer.
If you have chosen XMODEM as your download protocol, you
will be prompted for a file name and you can specify another
drive or directory by including a drive letter and/or
directory name. For example: a:\mydir\file.ext.
See Appendix A, BBS Commands, under "File Downloading
Commands" for a description of each file downloading command.
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3.5. FILE UPLOADING
There are two steps involved in uploading a file from
your computer to the TTN. The first step involves setting up
the TTN to receive a file you want to upload.
The second step involves setting up your communications
software to send the file. The second step is unique. The
keystrokes involved in setting up your software to send a file
varies according to the particular communications software you
are using to connect to the TTN.
The two steps required for uploading are outlined below:
Step 1 - Setting up the TTN to receive a file
You must use one of the appropriate upload areas provided
on the TTN. Each BBS that permits uploads has provided a menu
key for uploading. Press the appropriate key provided on the
upload menu in order to activate the upload process. The
following prompt will be displayed on your screen:
"Enter a 1-12 character file name:"
At this prompt enter a name that you want your file to
have when uploaded to the TTN. The file name must conform to
the DOS file naming convention of not more than 8 characters
for the file name and not more than 3 characters for the
extension name, (example: myupload.txt). The TTN will now
prompt for a description of the file you are uploading. The
following prompt will be displayed on your screen:
"Description of file (40 characters max)"
After you have entered the description, the TTN protocol
menu will be displayed if you have not set a default protocol
for uploading files. You will then choose the protocol you
wish to use for the upload. This must be a protocol that your
software supports.
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Select from the following transfer protocols:
1 - Prompted ASCII
2 - ASCII, XON after rcvd
3 - ASCII, XOFF/XON flow control
4 - XMODEM - Checksum
5 - XMODEM or YMODEM - CRC
6 - YMODEM Batch
7 - SEALINK
8 - KERMIT
9 - SuperKermit (Sliding Windows)
A - YMODEM-g Batch
Choose one (Q to Quit)? 4
The above example shows XMODEM as the upload protocol
selected as a result of entering "4".
Step 2 - Setting your communications software to send a file
At this point the following message will be displayed:
File open, ready to receive
(Ctrl-X to abort)
You are now ready to prepare your communications software
to send a file using the same protocol that you selected from
the TTN protocol menu. The procedure for doing this reguires
familiarity with your software. You should reference your
documentation, user's guide or reference manual for
instructions pertaining to your particular software.
The following are provided as examples of the keystrokes
reguired for setting up PROCOMM or PCPLUS and CROSSTALK
(XTALK) to send files:
*** THE KEYSTROKES REQUIRED TO UPLOAD FOR PROCOMM OR PCPLUS:
Press the "page up" key on your keyboard. The
PROCOMM protocol menu will be displayed. Select
the same protocol you selected from the TTN
protocol menu.
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If XMODEM was selected, the following prompt will appear:
Send XMODEM
Please enter file name:
If KERMIT was selected, the following prompt will appear;
[. Send KERMIT =====
Please enter file spec:
»
Enter the drive, directory and name of the file
you are uploading, where c=drive, d=directory,
f=filename. For example, c:\ulist\ups.rpt will
upload the file ups.rpt from your C drive in your
ulist directory.
*** THE KEYSTROKES REQUIRED TO UPLOAD USING CROSSTALK ARE:
Press the Home Key on your keyboard
CROSSTALK responds with a command prompt at the bottom of your
screen in the form of a question: "COMMAND?"
CROSSTALK command to send a file using XMODEM
or
CROSSTALK command to send a file using KERMIT
If you have chosen KERMIT as your transfer protocol, the
following prompt will appear:
(KERMIT) Enter name of file to transmit:
If you have cnosen XMODEM as your transfer protocol, the
following prompt will appear:
Enter name of file to Xmodem transmit:
Enter the drive, directory and name of the file you are
uploading to the TTN.
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3.6.
MESSAGES
Message service is provided for TTN users in the form of
electronic mail. Both private and public messages can be
exchanged between TTN users. Private messages are exchanged
between two registered users that only the sender and receiver
can see. Public messages can be read by any registered user
of the system. See Appendix A, BBS Commands, under "Message
Entry Commands" and "Message Retrieval Commands" for a
complete set of commands covering message options.
3.6.1 PRIVATE MESSAGES
Private E-MAIL is universal to the TTN and can be sent to
any registered user regardless of which board (SCRAM, EMTIC,
etc.) the user finds of primary interest. E-MAIL menus are
accessible from the main menu of each BBS that provides E-MAIL
service, usually under "PUBLIC COMMUNICATIONS". E-MAIL can
also be sent or read from the TTN Top Menu. The keys for
selecting e-mail options may vary from BBS to BBS, but will
have a similar appearance as follows:
ELECTRONIC MAIL
can Mail
ead Mail
Send Mail
oodbye
<-> Return to Hain menu
25
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Scanning Private E-MAIL
To scan E-MAIL enter and the system will respond with
a list of scan options as follows:
Scan Electronic Mail:
o you
rom you
oth To and From you
bort Scan
Which One?
You can scan messages addressed to you, messages sent
from you or both by entering the appropriate letter as
indicated above. A scan will display who the message is from,
who it is to and the subject. When you select a scan option
the system responds with:
Mark for later Retrieval?
If your response is "N", the system displays your
messages according to the option you have selected.
If your response is "Y", the system will ask an
additional question after each message is displayed as
follows:
Mark(Y/N/S)?
You then have the option to mark the message by entering
"Y" or not marking the message by entering "N" or stop and
exit the message display mode by entering "S".
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Reading Private E-MAIL
To read private E-MAIL enter and the system will
respond with a list of options as follows:
Read Electronic Mail:
o you
rom you
oth To and From you
arked Mail
bort Reading Mail
Which One?
The option will display marked messages. Messages
are marked either manually by the "Mark" option on a scan as
discussed under "Scanning Private E-MAIL" above or
automatically if you receive a "message waiting" notification
at logon. Marks remain for the entire online session.
Note the options available for private mail are addressed
to you or from you. This differs from the public message
board where all messages can be read in forward or reverse
order.
After a message has been read, the following command
options are available as follows:
wd, elete, gainf eply, ext, or top?
wd - forwards the message to another
registered user on the TTN E-MAIL message
board "MAILBOX" or choose from a list of
public message boards
elete - deletes the message
gain - displays the message again
eply - responds to the author of the message
ext - goes to the next message
top - stops reading your messages
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Sending Private E-MAIL
To send Private E-MAIL to another user enter and the
system will respond with:
Who is the message to?
Enter the registered user's name for whom you want to
send mail and the next prompt from the system is:
What is the subject?
Enter the subject of the message. The system will then
echo the inf .rmation you just entered, for example:
To: JOHN SMITH
Subj: EMAIL
The system will then ask if the information is correct
and provide an opportunity to change your inputs.
Is this correct(Y/N)?
Once you have verified the information is correct, the
system will ask if your message has been prepared off-line and
you want to upload it rather than composing it on-line. The
prompt is as follows:
Submit Prepared Text(Y/N)?
If you hava already prepared text for a message, for
example on a floppy disk, you can upload that text into the
message area. The text must be in ASCII format. If you have
prepared text and respond with "Y" to the above question, the
TTN will prompt you for an upload protocol as follows:
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Select from the following transfer protocols:
1 - Prompted ASCII
2 - ASCII, XON after rcvd
3 - ASCII, XOFF/XON flow control
4 - XMODEM - Checksum
5 - XMODEM or YMODEM - CRC
6 - YMODEM Batch
7 - SEALINK
8 - KERMIT
9 - SuperKermit (Sliding Windows)
A - YMODEM-g Batch
Choose one (Q to Quit)? 8
Protocol=KERMIT
File open, ready to receive
(Ctrl-X to abort)
At this point, prepare your communications software to
upload a file just as you would with a normal upload. If you
are using PROCOMM, for example, press the "PAGE UP" key on
your keyboard. PROCOMM will respond with a protocol menu.
Select the same protocol that you have chosen from the BBS, in
this example case, KERMIT. You will then be asked to enter
the location of the file you want to send from your computer.
If you want to compose a message on-line, which is
usually the case, enter "N", and the system invokes the
message editor as follows:
Enter text of message
by itself ends input
01:
The system provides word wrapping very similar to a word
processor. Compose your message and enter by itself on
a blank line and the system responds with the following
prompt:
ist, iew, ont, dit, cpt, ile, ave, or
uit?
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These options are explained in detail in Appendix A, BBS
Commands, under "Message Entry Commands". However, to be
notified that the recipient of the message has read the
message, enter for a return receipt.
To send your message enter and your message will be
saved on the system disk and the person to whom you addressed
the message will be notified the next time he/she logs on that
a message is waiting to be read.
**** Note: If is not entered the message will not be sent
and the person to whom you addressed the message will not be
notified. In future upgrades to the system, this prompt will
be changed to end.
Sending Carbon Copies (CCs)
You can send the same message to more than one registered
user by using the CC command. The CC command does not appear
as an option on the prompt line. Rather, it must be typed on
the first line of the message.
The proper CC command format is: cc: namel,name2,....,
where namel, etc. is the name of the intended recipient(s) of
your message. Please note that you must leave a space before
the first name. The first line of your message could
look like this:
01: cc: Jimmy Smith,John Doe
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Enclosing a file with a message
The ile option provides a method of enclosing or
attaching a file with your private message. The file can be
any type of file, ASCII or non-ASCII. In order to use this
feature, prepare a message as described under "Sending Private
E-MAIL" above and select ile from the prompt line. An
example of the questions with typical answers is given as
follows:
Enclose a file with this message(Y/N)? Y
Enter 1-12 char full file name: MYFILE.TXT
Select from the following transfer protocols:
1 - Prompted ASCII
2 - ASCII, XON after rcvd
3 - ASCII, XOFF/XON flow control
4 - XMODEM - Checksum
5 - XMODEM or YMODEM - CRC
6 - YMODEM Batch
7 - SEALINK
8 - KERMIT
9 - SuperKermit (Sliding Windows)
A - YMODEM-g Batch
Choose one (Q to Quit)? 8
Protocol=KERMIT
File open, ready to receive
(Ctrl-X to abort)
At this point, prepare your communications software to
upload a file just as you would with a normal upload. If you
are using PROCOMM, for example, press the "PAGE UP" key on
your keyboard. PROCOMM will respond with a protocol menu.
Select tha same protocol that you have chosen from the BBS, in
this case, KERKZT. You will then be asked to enter the
location of the file you want to send from your computer. The
prompt and response will look similar to the following:
Please enter file spec: C:\MYDIR\MYFILE.TXT
After the upload is complete, you must then enter for
save (send) the message that will carry your enclosed file.
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The next time the addressee logs on to the TTN, he will
be notified that a message is waiting similar to the following
example:
Msg#: 887 *MAILBOX*
08/13/91 14:54:35
From: John Brown
To: Jim Smith
Subj: Data Case
Jim, I have enclosed the data case you requested, hope this
will solve the problem. -John-
*Enclosed File: myfile.txt
wd, elete, nclosure, gain, eply, ext, or
top?
The addressee enters and the TTN download protocol
menu appears as follows:
Select from the following transfer protocols:
1 - TYPE file to your screen
2 - ASCII with DC2/DC4 Capture
3 - ASCII only, no Control Codes
4 - XMODEM
5 - YMODEM/YMODEM-g
6 - YMODEM/YMODEM-g Batch
7 - SEALINK
8 - KERMIT
9 - SuperKermit (Sliding Windows)
Choose one (Q to Quit)? 8
Select a protocol, for example, KERMIT and the TTN will
respond as follows:
Protocol=KERMIT File myfile.txt, 500 Bytes
Est. Time: 0 mins, 02 sees at 2400 bps
Awaiting Start Signal
(Ctrl-X to abort)
At this point, prepare your communications software to
download a file. If you are using PROCOMM, for example, press
"PAGE DOWN" and the enclosed file will be downloaded to your
PC.
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3.6.2 PUBLIC MESSAGES
Public messages differ from private e-mail in that they
can be read by all registered users and the addressee does not
have to be a registered user. For example, a public message
can be addressed to "ALL" or "ANYBODY". It is not restricted
to a certain individual. Public message menus are also
accessible from the main menu of each BBS usually under
"PUBLIC COMMUNICATIONS". The keys for selecting public
messages may vary from BBS to BBS, but will have a similar
appearance as follows:
PUBLIC MESSAGES
can Public Message Headers
ead Public Messages
eave Message on Public Board
oodbye
<-> Return to Main menu
Scanning Public Mail
To scan public mail enter and the system will respond
with a list of scan options as follows:
oward Scan
everse Scan
ew Message Scan
elective Scan
bort Scan
Which One?
You can scan messages in a forward direction (oldest
first), reverse direction (latest first), new messages since
the last time you were on TTN or selective by (from, to or
subject) . A scan will display who the message is from, who it
is to and the subject.
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oward Scan
everse Scan
ew Message Scan
elective Scan
bort 'Scan
Scans message headers beginning
with the first message
Scans message headers beginning
with the latest message
Scans message headers after your
last time on TTN
Scans message headers selected
by rom, o, or ubject
Exit Scan options
Public messages can also be marked manually by the "Mark"
option on a scan as discussed under "Scanning Private E-MAIL"
and then read using the arked Messages command when reading
public mail.
Reading Public Mail
To read public mail enter and the system will respond
with a list of options as follows:
orward or everse Multiple
ew Messages
arked Messages
elective Retrieval
ndividual Message(s)
bort Retrieve
Which One:
orward
everse Multiple
ew Messages
arked Messages
elective Retrieval
ndividual Message
- reads messages starting with
the first message on the board
- reads messages starting with
the latest message
- reads messages after your last
time on TTN
- reads messages marked using the
mark feature during a scan
- reads messages selected by
fields: (from, to, subject or
text string)
- displays a message by
specifying the message number
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Sending Public Mail
To leave a message on the public message system enter
and the system will respond with:
Who is the message to?
The response can be a registered user's name or some
generic name such as "ALL", "EVERYONE", "ANYONE" since the
message can be read by all users. The next prompt from the
system is:
What is the subject?
Enter the subject of the message. The system will then
echo the information you just entered, for example:
To: ALL
Subj: ENVIRONMENTAL PROBLEMS
The system will then ask if the information is correct
and provide an opportunity to change your inputs.
Is this correct(Y/N)?
Once you have verified the information is correct, the
system will ask if your message has been prepared off-line and
you want to upload it rather than composing it on-line. The
prompt is as follows:
Submit Prepared Text(Y/N)?
If you have already prepared text for a message, for
example on a floppy disk, you can respond with "Y" and the TTN
will prompt you for an upload protocol and you can upload text
that you have previously prepared for your message.
If you want to compose a message on-line, which is
usually the case, enter "N", and the system invokes the
message editor as follows:
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Enter text of message
by itself ends input
01:
Compose the message and enter a by itself on a blank
line. The system responds with the following prompt:
ist, iew, ont, dit, ave, or uit?
These command options are explained in detail in Appendix
A, BBS Commands, under "Message Entry Commands".
To send your message enter and your message will
saved on the system disk.
be
**** Note: If is not entered the message will not be sent.
In future upgrades to the system, this prompt will be changed
to end.
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3.7.
UTILITIES
A special menu accessible from the TTN TOP Menu entitled
SYSTEM UTILITIES, provides a number of useful utility options
that make the TTN user friendly, and fun to operate. Key an
'S' from the TTN TOP Menu and the System Utilities Menu
appears as follows:
SYSTEM UTILITIES
ystem Information
ecent Callers
Chat with SYSOP
hange Terminal Config
Top Downloads
rchivers/Dearchivers
TTN User's Manual
ime Remaining
ho else is on
eave SYSOP a Message
Change Password
ser Registry
elp Down/Uploading
oodbye
<-> Return to Top Menu
The utilities that are available and their selection keys
are presented with a brief description as follows:
ystem Information
Displays the hardware and software configuration of the TTN.
ecent Callers
Displays the last 127 callers to the system.
Chat with SYSOP
Pages the SYSOP; if he is available he will respond, and you
can communicate online.
hange Terminal Config
This option allows you to change your user profile. Refer to
Appendix A, BBS Commands, under "User Profile Configuration
Commands" for a complete detailed description of options that
can be modified.
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Top Downloads
Displays the most frequently downloaded files from the TTN.
This display is updated weekly.
rchivers/Dearchivers
Displays instructions and provides the programs necessary to
dearchive files that are downloaded from the TTN , in our
archived (compressed) format.
TTN User's Manual
TTN user's manual in WordPerfect format.
ime Remaining
Displays the time remaining in your current session.
ho else is on
Displays other users who are currently on the system.
eave SYSOP a Message
Provides the option for sending a message to the TTN SYSOP.
In order to send a message to a sysop of a particular BBS
within TTN, address the message to the person whose name
appears at the top of the main menu for that BBS.
Change Password
Change and verify your password.
ser Registry
Displays or searches the system file of registered users.
This file is updated weekly.
elp Down/Uploading
Displays help screens for downloading and uploading with
instructions for two leading communications software programs,
Procomm and Crosstalk.
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3.8.
ONLINE CONFERENCING
Online conferencing provides TTN users with the
capability to communicate with other TTN users who are
currently using the system. A conference area is provided
where users can talk to each other by typing from their
keyboard rather than the spoken words. You can access the
online conference menu by entering from the TTN TOP Menu.
The online conference menu will appear as follows:
ONLINE CONFERENCE
This area of the TTN provides callers with online conferencing
capabilities. Callers can communicate with other callers
currently online. Conferences can be either public or private.
BEFORE JOINING A CONFERENCE FOR THE FIRST TIME, READ AND PRINT
(PRINT SCREEN) THE INFORMATION PROVIDED UNDER <1> "HOW TO JOIN
A CONFERENCE" AND <2> "CONFERENCE COMMAND DESCRIPTIONS".
Entering <3> will place you in a conference area that requires
a /Quit command to exit.
<1> How to Join a Conference
<2> Conference Command Description
<3> Join a Conference
oodbye
<-> Return to Top Menu
You can join a conference by entering <3> from the above
menu for online conferencing. This places you in a public
conference. The commands available to you in a conference
must be preceded by the / character. To leave a conference
enter /q.
Example: entering the conference area and inviting another
user to join in a conference.
Enter <3> from Conference Menu.
Your are now in the public conference area.
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Enter:
This command lists the names of those users currently in
the public conference area. At this time, if you so desire,
you can begin to communicate with those conferees. If no one
is currently in the public conference then the system will
provide a list of the names and line identifications for all
users presently on the system. This provides you with the
information necessary to invite one of these users into a
public conference with you.
Suppose your name is Bob Blake and you are currently on
line 3 of the TTN. The system will present the information to
you in a form similar to the following:
Line 1: JOHN SMITH; AUSTIN, TX
Line 2: JIM JONES; NEW YORK, NY
Line 3: BOB BLAKE; DURHAM, NC
You see that John Smith is on line 1 and you would like
to talk about a modeling issue. Send John a message similar
to the following where the "s" stands for "send" and the "1"
identifies the line he is on:
Enter: /s,l Hi John, would you like to join me in a
conference? Let's talk about models. Just enter the online
conference area from the TTN Top Menu.
At this point John needs to enter the online conference
area by pressing 3 from the TTN TOP Menu. He is- immediately
in the public conference area with you.
When John enters the conference area, you will see a
message that John has entered the public conference. Anything
that you type, John will see prefixed by your line number and
name.
Example:
(3:BOB BLAKE) John, I see you are in the conference
area.
Anything that John types you will see prefixed by his
line number and name.
40
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discuss?
Example:
(l:JOHN SMITH) Hi Bob, What issue do we need to
If you want complete privacy between you and John so no
one else can see what you type, then you both must use the
/private command.
You would:
Enter:
John would:
Enter:
If you want to be assured that you will receive no
messages from a particular line, then use the /ignore command.
Example:
Enter:
-------
John would:
Enter:
See Appendix A, BBS Commands, under "Online Conference
Commands" for detailed descriptions of all online conference
commands.
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3.9. DATA BASE ONLINE APPLICATIONS
The TTN provides a platform from which data base compiled
programs can be executed and shared online by TTN users. Some
of the Bulletin Boards Systems within TTN have data base
applications. These applications are data base programs that
are written and compiled for real time execution on the TTN.
Within the Control Technology Center (CTC) BBS there are
examples of these applications. This BBS provides an online
data base program that users can interactively fill in an
electronic form for ordering CTC documents.
3.10. SUBJECT CONFERENCING
Subject conferences are special areas where callers with
special interests can maintain a continuing dialogue. This is
an open forum for the exchange of information, a place to seek
help on special topics. Subject conferences are provided in
a form similar to, or in the same structure as a public
message area for anyone who has a special interest. Messages
are left for others to read and respond to at a later time.
This differs from online conferencing which allows one to
talk, by typing, to someone else who is currently logged onto
the TTN. These subject conferences are sometimes referred to
as Special Interest Groups (SIGS) on some BBS systems. The
SCRAM BBS, for example, has subject conferences for a variety
of subjects covering modeling issues such as Air Toxics,
Complex Terrain, etc and is found in the Public Communications
Section of the BBS under Modeling Conferencing.
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3.11. HELP/INFORMATION
A major source of help and information on the TTN is in
special bulletins. Most boards provide bulletins in the form
of text files that may be read on line or downloaded for
future reference. A variety of special bulletins are
available to provide current information on a wide range of
topics such as computers, software, hardware, models, test
methods, -emission factors and training.
News items are provided so the caller can discover what
is new on each BBS. News items include schedules of
conferences, meetings, workshops, \ technical news and
newsletters. You can register for newsletters and mail from
each BBS that provides publications on a regular basis.
Ordering information is available for technical publications
that includes EPA document and publication numbers.
Files containing personal contacts are available to keep
the caller informed concerning who has responsibility, or who
is a key person that can be contacted for certain technical
areas. These files can be printed on the screen or downloaded
for future reference.
An Alert Section is provided at the beginning of some of
the bulletin boards that get your attention and point you to
bulletins that give more detail on the help and information
that should be conveyed to you in order to keep you abreast of
the changes that may have taken place since your last session.
Help can be selected from any command line where elp
is a part of that command line. There are two other important
help files that are accessible from the Systems Utilities
Menu. The first contains instructions for dearchiving files
downloaded from the TTN that are archived (compressed) in
order to save space and time. This help file is entitled
"DEARCH.TXT" and is presented*in a download directory when you
select rchivers/Dearchivers from the Systems Utilities
Menu. The second help file contains instructions for
downloading files from the TTN using two of the leading
communications software programs. This file is printed to
your screen when you select elp Downloading/Uploading.
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SECTION 4
TTN TIME SAVING TECHNIQUES
After you gain familiarity with the commands on the TTN,
you will discover ways to optimize your time and minimize your
long-distance charges. Some of the time saving techniques
that are available are provided to you in the form of archived
files, stacked commands and high speed modems.
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4.1. ARCHIVED FILES
Many of the files available in the downloading
directories are compressed to conserve space and reduce
transmission time. In most cases, multiple files are packed
into a single library archive. These file have the file
extension names of "ARC" or "ZIP". When you download them,
they must be unpacked and restored, an operation that requires
a utility program "ARCE.COM" for "ARC" files and "PKZ110.EXE"
for "ZIP" files. These dearchivers are found in the Systems
Utilities Menu under rchivers/Dearchivers. The dearchiving
instructions included in the help file "DEARCH.TXT" are
presented below:
Dearchiving Instructions
Files available for downloading from TTN that are
identified as ZIP or ARC by their file name extension have
been archived (compressed) to save space and time during
downloading. After a archived file has been downloaded it
must then be dearchived (decompressed) on your system, before
the programs and/or data comprising that file can be used.
The program that is needed to dearchive "ARC" files is
named "ARCE.COM". The documentation for "ARCE.COM" is in a
file named "ARCE.DOC". The "ARCE.COM" program can be
downloaded and used as often as necessary to dearchive "ARC"
files downloaded from the TTN.
The program that is needed to dearchive "ZIP" files is
inside a file named "PKZ110.EXE". This file is different from
ARCE.COM because it is itself an archived file. After
downloading "PKZ110.EXE" to your hard drive, type PKZ110 at
the DOS prompt and the programs and documentation included in
"PKZ110" will be generated on your hard drive. You will find
a program named "PKUNZIP.EXE" among the files generated on
your hard drive. This is the program needed to dearchive "ZIP"
files. Also, documentation and other supporting programs are
generated or. vcur hard drive as a result of the execution of
PKZ110.EXE. The "PKUNZIP.EXE" program can be used as often as
necessary to dearchive "ZIP" files downloaded from the TTN.
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Once you have "ARCE.COM" and "PKUNZIP.EXE" stored on your
system, you are ready to dearchive any compressed files
downloaded from the TTN. For example, if you have downloaded
a file named "ISCST.ARC" and a file named "BLP.ZIP" from the
TTN and they reside in the same DOS drive and directory as the
"ARCE.COM" and "PKUNZIP.EXE" you would dearchive each file as
follows:
ARCE iscst.arc
PKUNZIP blp.zip
If the files are not in the same DOS drive and directory,
a path must be included to point to the location of the files.
For example, if "ISCST.ARC" and "BLP.ZIP" are downloaded to
your "A:" floppy drive, you would dearchive each file as
follows:
ARCE a:iscst.arc
PKUNZIP a:blp.zip
*** ARCE is a copyrighted product of Systems Enhancement
Associates, Inc.
*** ZIP is a copyrighted product of PKware, Inc.
EPA has a site license to distribute ARCE and ZIP for use by
registered bulletin board users for dearchiving files
downloaded from the TTN.
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File Naming Conventions
The files on the TTN conform to the DOS file name
convention that includes a name and three character extension.
The extension serves to identify the type of file as presented
below:
.ARC - Files that have been archived using the ARC
archiver. ARC'ed files can contain any type of
file or mixture of various types of files.
ARC'd files are dearchived using the ARCE
dearchiver.
.ZIP - Files that have been archived using the ZIP
archiver. ZIP'ed files can contain any type of
file or mixture of various types of files.
ZIP'ed files are dearchived using the ZIP
dearchiver.
.TXT - ASCII text files that can be read on the screen
or downloaded and processed with a word
processor or text editor. (unarchived).
.WPF - WordPerfect files. (unarchived)
.TIF - Graphics files for graphics compatible programs
such as Lotus, Freelance, WordPerfect, Aldus
Pagemaker, etc. (unarchived)
.BAS - Basic programs. (unarchived)
.WK1 - Lotus 1-2-3 worksheet files, (unarchived)
.DOC - Text file of documentation for a program or
system. (unarchived)
.FOR - Fortran source code, (text format, unarchived)
.EXE - A PC executable module that can be executed
after downloading by typing the file name.
(unarchived) *
.COM - A PC executable module that can be executed
after downloading by typing the file name.
(unarchived) *
* Note: EXE or COM may also be self-extracting
archived files
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4.2. COMMAND STACKING
Another way to save time is to "stack" commands. You can
stack requests for downloads when operating in a download
directory. For example, if you want to download the ISCST Air
Quality Dispersion Model you can simply enter:
P 8 ISCST.ARC
In this way you can download the file using the KERMIT
protocol and avoid receiving the menu of protocols and
receiving an additional prompt for File Name?. In the above
example, note that the "D" for download is missing. The "D"
is assumed and can be omitted.
You can display a text file to your PC screen from a
download directory by simply entering:
P 1 FILE.TXT
This will avoid receiving a menu of protocols, from which
you would select protocol number 1 that types the text file to
your screen.
4.3. HIGH SPEED MODEMS
The TTN utilizes modems that range in speed from
300/1200/2400/9600 baud. If you are currently using a 1200
baud modem but have access to a 2400 baud modem, you should
consider using the higher speed modem. The higher speed is
especially valuable when downloading lengthy files. If you
have a 9600 baud modem or have plans to purchase one, be sure
that it conforms to the V.32 standard for 9600 baud modems.
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4.4. Hot keys. Pause and Stop
The TTN incorporates a "hot key" feature, which means
that you can enter a command at any time and TTN will
immediately obey. A menu item can be accessed by pressing the
appropriate menu key without having to also press "enter".
You do not have to wait for TTN to finish displaying a menu
before you give your next command.
Several "hot key" commands can be given at one time. For
example, rather than go through multiple layers of menus to
reach the SCRAM BBS public message board, simply type <3SCP>
[<3> for the SCRAM BBS, to abort the alerts display,
continue on to SCRAM, to enter the SCRAM public message
area] and you will immediately find yourself in the desired
area.
Two other commands provide the ability to pause or abort
the remainder of a display if you have set your terminal
configuration to pause after each display page. This prevents
nonstop scrolling. These options are in effect when you see
"TYPE P to Pause, S to Stop Listing" in the upper left hand
corner of your screen. The key causes text that is being
displayed on the screen to pause. The key stops the rest
of the display.
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SECTION 5
GETTING HELP
Help is available from several sources, including online,
telephone, messages and bulletins.
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When you are connected to the bulletin board, help is
available on command lines that include the option elp.
Help with downloading is available from the Systems Utilities
Menu along with the archivers/dearchivers that are required
for compressed files.
During business hours (8:00 am to 5:00 pm ET), someone
will usually be available to answer questions concerning the
operation of the board. The voice help line is (919) 541-
5384. If someone is not available at the time you call, you
can leave a taped message at this number. If you are having
trouble connecting to the board, check to see if the you are
calling with the correct parity, number of bits and terminal
emulation (see Section 2.2). If you do not understand how to
use a command, first try the help options. If you are having
trouble downloading, first consult the documentation for your
particular communications software.
If you have a question or would like to make a suggestion
regarding the use of the board, you can leave a message to
SYSOP from the Systems Utilities menu or from any EMAIL
message board, by addressing the "MESSAGE TO:" SYSOP.
If you have non-bulletin-board related questions, or
questions regarding an application within one of the Boards,
the best course of action is to leave a message on the public
message board of that particular board addressed to "ALL". In
most cases, someone will return a message to you or you can
browse the public board to review the questions and answers of
other users.
If you are a new user, be sure to pay close attention to
the alerts for the board you are working with, because they
contain the most up-to-date information about what is
available on the board and also point to bulletins that
describe in detail those things that have changed or those
things that are new.
You may obtain the most recent version of this document
by downloading the file MANUAL.ZIP from the Systems Utilities
Menu.
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APPENDIX A
BBS COMMANDS
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APPENDIX A: BBS COMMANDS
USER PROFILE CONFIGURATION COMMANDS
TTN permits you to easily change your user profile. This
profile tells TTN how wide it should display messages, the
type of default file transfer method you prefer, and other
information that will make your use of TTN more enjoyable.
User profiles can be changed via the Systems Utilities Menu by
pressing the hange Terminal Configuration key. The
following commands are used to change user profile:
A: Set ANSI codes on/off G: Set IBM Graphics on/off
W: Set Terminal Width T: Set New Terminal Type
L: Set Line Feeds on/off C: Set Lower Case on/off
N: Set # of Nulls M: Set Message Entry Prompt
U: Set File Upload Protocol D: Set File Download Protocol
P: Set Page Pause (-more) S: Show Current Settings
1. ANSI codes & IBM Graphics
These settings control whether TTN sends you special
effects. ANSI codes provide highlights, color and cursor
positioning. IBM graphics display line drawing and boxes. If
you answer es to IBM graphics, you must have your
communications program set to 8 data bits, no parity.
2. Terminal (or Terminal Emulator) Attributes
These settings define to TTN how your computer or
terminal emulator program is configured. These options are:
Terminal Width: This option tells TTN how many characters
print on a single line on your computer so it can process text
for the besr appearance on your display. This number is
usually 80.
Line Feeds: This option varies from computer to computer.
Try setting it to es to begin with, as this is usually the
correct setting. If everything appears double spaced, then
set the option to o. If everything appears on a single
line on your screen, then you have this option set to o
when you need it set to es.
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# of Nulls; This option determines whether delays are
used after each line is displayed. The normal setting is "0"
since modern computers don't need delays. If the first
characters of each line are missing on your monitor, then set
the nulls equal to the number of missing characters.
Lower Case; If your computer cannot properly handle lower
case characters then set this option to o. Otherwise,
answer es (default) to get normal Upper and Lower case
displays.
Page Pause (-more-1: If you set this option to o, then
TTN will not pause when displaying text files to your screen.
Files that are displayed will scroll continuously to the end
of the file. If you wish TTN to pause for you, then set this
option to es, and tell TTN how many lines your computer can
display on a single screen. The number of lines per screen
should be set to 24 for the best performance. A es, allows
you to display one page at a time and inserts a "-more-" at
the bottom of the screen at the end of each page. Pressing a
key will cause the next page to appear.
Terminal Type; If you select this option, a series of
pre-defined computer types are displayed. If your computer is
shown, then you can configure all of the above options
properly for your computer by selecting that option.
3. Protocols and Message Entry Settings
These settings determine how the following items default
every time you logon to the system:
File Download Protocol; If this is set to "Default", then
TTN will ask you the first time you download a file on each
call which file transfer protocol you wish to use. It will
also always ask in those areas where you don't have a set
protocol command available. However, if you set a protocol
here, then TTN will always use that protocol and will never
ask. If you override that protocol in a file area, the new
protocol will only be used for that call and the next call
will revert to the protocol set here.
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File Upload Protocol: If this is set to "Default", then
TTN will ask you on every Upload command which protocol you
wish to use. If you set a protocol here, then TTN will always
use that protocol and will never ask you what protocol you
want to use on uploads. This protocol will also be selected
automatically if you ask to upload prepared text during
message entry.
Message Entry Prompts: This entry defines how TTN will
act when you are inputting a message. The following options
are available:
a. Prepared Text Entry: If this is set to o, you will
not be asked about prepared text entry when sending an e-mail
or public message. If you never want to upload prepared text
into messages, then setting this option to o will save you
the time answering this question on every message. If this is
set to es, you will be asked on each message you enter if
you want to submit prepared text-or type it in online.
b. Prompt Type; This will configure how TTN will prompt
you during manual message text entry as follows:
0 = Each line is prompted for with the edit line
number only.
1 = Each line is prompted for with the byte count
left in the input buffer plus the edit line
number.
2 = Each line is prompted for with a ">" character
only.
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FILE DOWNLOADING COMMANDS
rea [area #]
ownload [filelist]
rotocol [protocol]
xamine [filelist]
ew
elp
ist
[date]
[help]
[string]
Change to specified File Area.
Download a file or files.
Set or change default transfer
protocol.
Examine and Produce a directory
of an archived file. ZIP or ARC.
Produce a list of files newer
than a given date.
View a download help listing.
produce list of all files you may
download or optionally only those
that contain a selection string
in their name or description.
Press "Enter" or "Return" key alone
to exit.
rea
This command will only appear as an option when you are
working in a File Area on TTN. Examples of file areas are
found in the SCRAM BBS where meteorological surface data,
mixing height data and model clearinghouse data are offered.
This command allows you to select which file area is currently
active. If you press enter from the file area menu without
making a selection, you are set to File Area #1. You may
download from that area until you select another area. When
you enter the "A" command by itself, a list of all available
file areas is produced. You then may select the area you
choose. If you already know what area you want, you may place
the area number on the same line as the A command. Examples:
This command will produce a list of areas. Select the one you
wish, or press alone to remain in the current area.
a 7
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Will select file area 7 (if one is defined). If you select an
invalid area number, TBBS will list all the areas and prompt
you for a valid file area selection.
This command means to press "enter" or "return" key alone to
execute or exit.
ownload
This command downloads one or more files. You may enter the
letter "D" followed by one or more file names. The "D" is
optional, and you may just enter the file names at the select
prompt if you wish. Example:
d filel.txt
Will download a single file.
filel.txt file2.txt file3.txt
Will download multiple files. Wild cards may be used in file
specifications. For example, filel.* or file??.doc. If
more than one file is selected, you must be using a protocol
capable of multi-file transfers.
Note: TTN will halt a file transfer between files where you
would otherwise exceed byte and/or time limits.
xamine (Archive Files Only)
This command allows you to obtain a directory of all of the
files which are stored in an ARCed or ZIPed file. It will
produce a directory of the files and their date, time, and
size which are contained in the specified archived files,
(e.g., E FILENAME.ZIP).
e *.ZIP
will produce a directory of all ZIP files.
e filel.arc file2.arc
will produce a directory of both specified .ARC files.
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elp
This command will produce a help listing on the screen that
applies to your current area. If you are in a download
directory and press elp you will get help for downloading.
ist
This command will produce a listing of files available to you
in a download section. If there are no arguments it will list
all the files that are available. You may optionally put a
string after the list command. If you do, the listing will
only show those files where the name or description contains
the specified string. Note: this string is literal, and
doesn't honor wild card characters ? and *.
Example:
1
List all Files in the directory
1 remm
List all entries where the string "remm" is contained in the
file name or description. Search strings may have any
printable characters and may include imbedded spaces.
ew
This command provides a listing of files posted which are
newer than a given date. This command has the format:
n [date]
If the date is omitted, the date of your previous logon to the
system is used. Date is specified in the same format as it is
shown in the directory listing. Example:
n 08-10-83
Will list all files newer than 8-10-88.
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rotocol (Set or Change)
This command will allow you to set a default download protocol
or to change the protocol you wish to use for the remainder of
this call. The first time you download a file, you will be
asked for a protocol to use, and after that the same protocol
will be used for each download for the remainder of this call.
If you wish to avoid being asked for a protocol, or if you
wish to change the protocol you have been using to a different
one, then use this command. You may use the number of the
protocol to select if you know it.
Example:
This command will produce a menu of protocols as follows:
TYPE file to your screen
ASCII with DC2/DC4 Capture
ASCII only, no Control Codes
XMODEM
YMODEM/YMODEM-g
YMODEM/YMODEM-g Batch
SEAlink
KERMIT
SuperKERMIT(sliding windows)
TYPE file
This protocol method will cause the contents of a "text"
(ASCII) file to be displayed on the screen. It is effectively
a download to your screen. You can read the text file online
and not have to actually download the file to your computer
before you can read the document. Only those files on the TTN
that have a file extension name of "TXT" or "DOC" can be
displayed on the screen. Command stacking will allow you to
display a text file on the screen by entering .
ASCII Protocols
These protocols should be use as a last resort with non-
intelligent terminals and dedicated word processors, etc.
ASCII protocol transfers will only work with non-binary text
files. These protocols should, for the most part never be
used. There is no error checking.
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XMODEM
This is the oldest and most widely used error resistant
protocol in the PC community. There are two variations:
CHECKSUM and CRC. CRC is more reliable at detecting errors
and should always be used if you have a choice. When
downloading, TTN can automatically tell if you pick CHECKSUM
or CRC, while for uploading you will have to tell TTN which
method to use.
YMODEM
This protocol is essentially a CRC XMODEM with 1024 byte
(IK) packets and is efficient at higher modem speeds on
telephone lines that are relatively trouble free. It cannot
transfer names or exact file size. YMODEM-Batch should be
used if possible.
YMODEM-Batch
This is the same as YMODEM except that it allows file
name and exact size of the file to be transferred. The
transfer speed and characteristics of this protocol are
identical to the YMODEM protocol.
YMODEM-g and YHODEM-Q Batch
These variants of the YMODEM and YMODEM-Batch protocols
provide the fastest possible speed of file transfer if used
with high speed error correcting modems.
SEAlink
This is a variation of XMODEM that overcomes transmission
delays caused by satellite links or packet switched networks.
Such delays can slow XMODEM transfer rates by as much as 700%.
KERMIT and SuperlCSHIT
KERMIT is the only protocol that handles both 7 and 8 bit
links. The protocols mentioned above all require a full 8 bit
link to operate correctly and are often not available on
mainframes and minicomputers. KERMIT was developed to address
this problem. It will also adjust automatically to complement
features available on networks and other computer systems.
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SuperKERMIT adds sliding windows to eliminate link delays
and automatically adjusts to regular KERMIT if it is not
supported by both the link and calling terminal program.
ZMODEM
ZMODEM is a fast and efficient protocol with innovative
features such as variable packet sizing, failed transfer
restart, complete file information, 16-bit or 32 bit CRC error
checking, automatic download start-up (receiver dictated) and
a pseudo-streaming full duplex nature.
Select the protocol you wish to use (or select the uit
option if you don't want to select a new default download
protocol).
P 7
Will select SEAlink protocol as the default.
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MESSAGE ENTRY COMMANDS
TTN supports two forms of message entry: "Line" mode and
"Off Line prepared text" mode. "Line" mode or manual mode,
the most common type, allows you to type your message online.
You will be prompted for each line of input. The overflow of
one line will be wrapped around to the next line down. How
TTN will prompt you during your manual message text entry is
defined in your User Profile Configuration (see section 3.5
User Profile Configurations). The "Off Line prepared text"
mode allows you to upload a file (which you prepared off line)
as a message.
The command options for entering private e-mail differ
slightly from the command options for public messages.
Private e-mail provides two additional options, cpt and
ile that are not provided for public messages.
*** PRIVATE E-MAIL ENTRY COMMAND OPTIONS ***
After entering a private e-mail message you will be given
the following options:
ist, iew, ont, dit, cpt, ile, ave, or
uit?
These options are explained below:
ist
Displays your entered text without word wrap and with
each line numbered. The numbers are used for editing if you
wish, or you can edit strings as described below. Remember
TTN will word wrap your message when it finally displays it so
the lines may not come out exactly as you expect them.
iew
Displays your message with word wrapping applied. This
allows you to see how it will look when it is read by the
recipient. Then, if need be, you can edit the message before
sending (saving) it.
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ont
This will place you in the line mode at the end of your
message so you may continue your message.
dit
This allows you to edit a string of characters in your
message. You will be asked for a line number or/string.
There are two editing options:
1. Enter the number of the line you wish to change and
that line will be displayed. Either re-type this
line as you want it or enter <-> followed by a
to delete the line.
2. Enter a followed by a search string (note: the
is needed only if the string has only numbers).
You will be prompted for a replacement string.
Either enter a new string, or to delete the
string. The edited string and 15 characters
preceding it are displayed for your approval. To
quit, press and TTN will abort the replacement
operation.
Cpt
If selected, you will be asked to confirm your desire to
have a return receipt generated when the message is read by
your addressee.
If you select this option TTN will first ask: "Do you
want to enclose a file in the message (Y/N)?", If "es" TTN
will prompt: "Enter the 1-12 character file name:"
TTN will then ask you to upload your file as described in
section 3.5 ''File Uploading" with the exception that a
description of the file is not required. After your upload is
complete, the message "*Enclosed file xxx" (where xxx is the
name you gave the file) will appear every time the message is
read. The file may be retrieved by anyone who can read the
message .
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ave
Your message will be saved to the TTN message base and
the person or persons to whom it is addressed will be notified
the next time they logon to the TTN.
uit
You will be prompted with: "QUIT (Y/N)?11 If you press
, you will be returned to the prompt line. If you press
, your message will be aborted.
*** PUBLIC MESSAGE ENTRY COMMAND OPTIONS ***
After entering a public message you will be given the
following options:
ist, iew, ont, dit, ave, or uit?
These options are explained above for private e-mail.
They are identical to the options for private e-mail, the only
difference is that the cpt and ile command options are
not available for public messages.
*** OPTIONAL ENTRY COMMANDS ***
There is an optional command that does not appear on a
prompt line. This is the Carbon Copy command as explained
below:
Carbon Copy
You may sena messages to more than one person on the TTN.
The carbon copy command does not appear on the prompt line.
Rather, it must be typed on the first line of the message.
The carbon copy command format is: cc: namel,name2,....,
where namel and name2 are the intended recipients of your
message. Note: You must leave a space before the first name.
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MESSAGE RETRIEVAL COMMANDS
TTN supports the message retrieval methods that are
described below. Remember, you can use TTN's "hot keys" to
ause, top, go to the ext message, or use any of the
other commands described below instead of waiting for an
unwanted message to completely display.
The command options available for retrieving messages
from public messages boards differ slightly from the commands
available for retrieving messages from private e-mail boards.
However, some commands apply to both public and private.
*** PUBLIC MESSAGE RETRIEVAL COMMAND OPTIONS ***
orward
If you respond with , the retrieval will begin with
the first message on the board. You can give a starting
message number and all messages on the board with numbers
equal to or higher than the specified one will be displayed.
everse
This works the same as forward except the Display
proceeds in reverse from the number you specify towards the
first message in the system.
ew messages
Messages left after your last time on TTN are retrieved.
arked messages
Displays marked messages. Messages are marked either
manually by the ''Hark" option on a scan, or automatically if
you receive a "message waiting" notification at logon. Marks
remain for the entire online session.
ndividual message
Displays a message by specification of the message
number.
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elective retrieval
Messages are selected by fields: rom, o, or
ubject and text string. After you pick one, you will be
asked for a text string to match. This string may be a
partial one and .iy message which contains the specified
string will be di£ Clayed.
Example: If you specify ubject and a text string of
IBM_, then the following subject fields would all match:
IBM PC USER'S GROUP
ALL IBM PC OWNERS
IBM/AT OWNERS
The string will be searched for anywhere in the specified
field. After the string is specified, you will be asked for
a starting message number so you can restrict the search time
if you wish.
*** PRIVATE E-MAIL MESSAGE RETRIEVAL COMMAND OPTIONS ***
wd
If you select this option, you will be asked who to
forward the message to and you will be asked to enter the
board on which you wish to place the message. For private
EMAIL, select the message board named "MAILBOX".
elete
If a message is either from you or to you, you can press
to delete it.
ncl
This prompt indicates that a displayed message has a file
enclosed in ic v ths file name also is displayed), Press to
enter a download sequence identical to normal file download as
described in section 3.2 to receive the enclosed file.
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*** PUBLIC AND PRIVATE E-MAIL RETRIEVAL COMMAND OPTIONS ***
arked messages
Displays marked messages. Messages are marked either
manually by the "Mark" option on a scan, or automatically if
you receive a "message waiting" notification at logon. Marks
remain for the entire online session.
Pause between messages
On all retrievals except individual, you will be asked:
"Pause After Each Msg(Y/N)?". If you enter , then this
prompt always follows a displayed message:
gain, eply, ext, or top?
gain
Pressing A will cause the message to be displayed again.
eply
Pressing R will allow you to enter a Reply to the message
you have just seen displayed. This reply will be chained to
the message for future retrieves.
ext
Pressing either N or will display the next message
in the retrieve.
top
Pressing s will stop(abort) the retrieve.
Reply Chain Reading
If a message is part of a subject chain, then one or both
of these prompts may be displayed: "<*>replies and <->". If
you press *, you will get the next message forward in the
reply chain. If you press -, you get the preceding message in
the chain. The ext prompt now changes to indicate the next
message forward in the chain. At the end of the chain in the
forward direction, you will receive the message: "End of
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replies, add yours (Y/N)?. es allows you to add a message
to the chain. o drops you out of the chain and back into
the regular message base. Note: The <*> command is a short
cut. If you overlook the <*> option and press ext, you
will be prompted with: "Message has replies, read now(Y/N)?.
Selecting es is the same as if you had initially pressed
<*>. If you enter o, then the next sequential message is
retrieved.
No Pause Between Messages
If you answer N to the pause question, you will be
prompted for a reply if an unread message is addressed to you.
Also, if a message is either from or to you, you may delete it
at any time and help conserve disk space. When you select
o to the pause question you will further be asked:
For reply chains:
Ask on each
<2> Always follow
<3> Never follow
Help
If you select 1, then every time a message is encountered
which is part of a chain, you will be asked:
Message has replies, read now(Y/N)?
Answering Y, will read all related messages in order
before proceeding with the next message. Answering will
read messages in strict numeric order.
If you select 2, the messages will always be retrieved by
subject group.
If you select 3, the messages will always be retrieved in
strict numeric order.
Note: Even in the No Pause mode, you may still use the
ext message or top message hot keys I
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ONLINE CONFERENCE COMMANDS
Brief Command Descriptions
Note: The characters in brackets are optional.
Command Description
1) /w[ho] Lists who else is on
2) /s[end],n message Sends message to any active line
3) /i[gnore][,n] on Do not receive messages from
other lines
4) /i[gnore][,n] off Receive messages from other
lines
5) /p[rivate],n Set up private conference with
another line
6) /channel n Go to a CB simulator channel
7) /q[uit] Exit conference area, return to
conference menu
Detailed Command Descriptions
W[ho] .
This command will list all other lines which are in the
conference you are now a part of. If you are not currently in
any conference, then this command will list all other lines
logged on at this time, no matter what they are doing.
/s[end],n message
The characters in brackets [] are optional and do not need to
be entered. This sends the text of the message to line n
prefaced by your line number and name. If that line is in a
download or upload, then you will get a message saying "try
again later". You will also get this message if that line has
an ignore flag set for your line.
/i[gnore][,n] ON or
/i[gnore][,n] OFF
This command sets the ignore flag ON or OFF for the specified
line. If no line is specified then all ignore flags are set
either on or off. If an ignore flag is set ON for a
particular line, then nothing that line sends to you either
via a SEND command, or as part of a conference will be
received by you.
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/P[rivate],n
This command allows you to set up a private conference with
line n. That line must also enter a corresponding private,n
command where n is your line. At that time, you and line n
are in a totally private one on one conference.
/Channel n
This command allows you to go to channel n of the CB
simulator. Note: n must be in the range 1 to 40. You may use
this command to change channels as often as you like. If you
were in a private conference when you issued this command, you
will exit that private conference automatically.
/Q[uit]
This command will exit you from any Private or CB conference,
and return you to the public conference. If you are already
in the public conference then this command will return you to
the online conference main menu.
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APPENDIX B
ACCESS THRU ETHERNET AND PORT SELECTORS
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APPENDIX B: ACCESS THRU ETHERNET AND PORT SELECTORS
The TTN is available as a node on the NCC ETHERNET LAN.
This service is available from various locations in the local
Triangle area such as ERG, CATAWBA, and MUTUAL. Wiring is
provided in these buildings that allows connectivity to the
ETHERNET ring. Communications software is required in order
to use the service. The following instructions are provided
for ETHERNET access using CROSSTALK, the EPA standard for
communications software.
IET LAN access using
Access to TTN on ETHERNET is accomplished thru XTALK
using a special ETHERNET command file. This command file is
available from the TTN Central SYSOP if it is not in your
XTALK directory.
There are some key parameters in the ETHERNET command
file to check and/or set accordingly:
SPeed 9600 PArity None DUplex Full DAta 8
STop l EMulate VT-100 INfilter Off
The ETHERNET command file is activated by entering the number
corresponding to your ETHERNET file. The system will print:
"Local link now active" momentarily at the bottom of the
screen.
<== Hit enter, "Local>" prompt
appears
Local> SET BREAK LOCAL <== Sets break key for terminal
session
Local> C SCRAM <== Command to connect to TTN
<== Hit enter key, TTN comes up
For downloading, the server must be set for binary transfer.
This must be done after the TTN session has been established.
It cannot be done prior to the TTN connection. The following
sequence will provide downloading capability:
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Note: The following 4 entries can be omitted if KERMIT is used
as the download protocol.
<== Hit end, the XTALK break key
<== Hit enter, "Local>" prompt
appears
Local> SET SESSION PASSALL <== Sets server port for binary
transfer
Local> RESUME <== Goes back to Host (TTN) prompt
After leaving TTN using the oodbye command:
<== Hit end, the XTALK break key
<== Hit enter, "Local>" prompt
appears
Local> LO <== Logout Ethernet session
Local> USER NAME <== Enter your user name or
initials
Exit from XTALK:
<== Switch to XTALK command mode
<== Exit XTALK
Note: The following prompt may or may not appear:
Enter username> XXX <== Enter a character or
initials
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ETHERNET LAN access usinct
There are some key parameters in PROCOMM to check and/or
set accordingly:
Speed 9600 Parity None Duplex Full Data 8
Stop 1 Emulate VT-102 Translate Table Off
Access PROCOMM through AUTOMAX or directly from the PROCOMM
directory using DOS:
<== Hit enter, "Local>" prompt
appears
Local> SET BREAK LOCAL <== Sets break key for terminal
session
Local> C SCRAM <== Command to connect to SCRAM
<== Hit enter key, TTN comes up
For downloading, the server must be set for binary transfer.
This must be done after the TTN session has been established.
It cannot be done prior to the TTN connection. The following
sequence will provide downloading capability:
Note: The following 3 entries can be omitted if KERMIT is used
as the download protocol.
<== Press ALT, B the PROCOMM break
key and the "Local>" prompt
appears
Local> SET SESSION PASSALL <== Sets server port for binary
transfer
Local> RESUME <== Goes back to HOST (TTN) prompt
After leaving TTN using the oodbye command:
<== Press ALT, B the PROCOMM bifeak
key and the "Local>" prompt
appears
Local> LO <== Logout Ethernet session
Local> USSR NAME <== Enter your user name or
initials
Exit from PROCOMM:
<== Press ALT, X and enter Y
Note: The following prompt may or may not appear:
Enter username> XXX <== Enter a character or
initials
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Access through NCC Port Selector
Access to TTN is available from the NCC port selector through
a telephone line or from a LAN. NOTE: This service is not
available through a dedicated IBM 3270 terminal line. Consult
with your computer personnel or LAN administrator for
instructions on gaining access to the port selector from your
particular location. This connection requires a 7 bit link
and your communications software must be set accordingly:
Parity = E
Data Bits = 7
Stop Bits = 1 i
KERMIT is the only Protocol that can be used for downloading
using this access method, since KERMIT is the only Protocol
that handles both 7 and 8 bit links.
The port selector will have the following appearance:
Welcome to the Environmental Protection Agency National
Computer Center
Please enter one of the following selections:
IBMPSI for IBM
TCP for IBM 3270 EMULATION
VAXA for VAX SYS A
VAXB for VAX SYS B
EMAIL for EMAIL
Enter selection:
At the enter selection prompt enter "ENET"
The following messages and prompts will appearxwith slight
variations:
Connected.
DECserver 200 Terminal Server V3.0 (BL33F) - LAT V5.1
Please type help if you need assistance
Enter username>
At the Enter username prompt enter your "name or initials"
You should now see the following prompt:
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Local>
Respond to the Local prompts as follows:
Local> SET BREAK LOCAL
Local> C SCRAM
You should now be in a TTN session. If your TTN configuration
is set with IBM graphics capability turned on, the lines that
normally surround the menus will appear as letters. You can
improve the appearance of the menus by going to the Systems
Utilities Menu and under hange terminal configuration, set
IBM Graphics to "no". The menu lines will now appear as
dashes.
After entering oodbye from the TTN, you must now enter the
appropriate break key for your communications software. The
following are break key sequences for XTALK and PROCOMM
(PCPLUS):
XTALK -
PCPLUS - B
PROCOMM - F7
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APPENDIX C
GLOSSARY OF COMMUNICATIONS TERMS
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APPENDIX C: GLOSSARY OF COMMUNICATIONS TERMS
ANSI
American National Standards Institute. ANSI refers to a
standard set of escape sequences for controlling special
features on a video terminal. In the MS-DOS operating system,
the driver is called "ANSI.SYS" and is usually installed by
the computer user. Most EPA IBM microcomputers have ANSI.SYS
already installed. Such features as cursor positioning,
color, bold and blinking lights are provided by ANSI escape
sequences.
American Standard Code for Information Interchange. A
standard character set and coding scheme to represent numbers,
symbols, alpha characters and other control codes. ASCII
codes 32-127 constitute the 96 printable characters (52
upper/lower case letters, "space", 10 numbers and 33
punctuation marks and symbols. Microcomputers commonly use an
8-bit format that provides up to 256 combinations known as
extended characters. ASCII is often used as an adjective
describing computer files that only contain the 96 printable
characters.
Asynchronous Communications
A way of transmitting data in which start and stop bits are
used to frame each character. Data is sent and received at
irregular intervals of time.
Baud
A measure of transmission rate in bits per second (bps). Baud
is interchangeable with BPS by common usage, although
technically incorrect.
BBS
Electronic bulletin board system.
Bit
The smallest unit of information. A bit can have only two
states, "on" and "off". A binary digit.
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Block
A standard unit of information sent by one computer before it
pauses to learn if the other computer has received it without
error. The common block size for microcomputer communications
protocols is 128 bytes.
Byte
A binary character, commonly eight bits. A byte can have 256
possible combinations. Every ASCII character or code is
uniquely defined by a particular byte. Bytes are also a
measure of a computer's memory, usually expressed in terms of
"kilobytes", or Kb. There are 1,024 bytes in a kilobyte.
Conventional memory in a microcomputer is 640Kb. Eight-bit
bytes in PCs are truncated to seven bits during transmission
to other computers if a seven-bit data transfer protocol is
used.
Download/Upload
Retrieving a file from a BBS and sending a file to a BBS.
Most users will be retrieving (downloading).files more than
sending (uploading) files.
Duplex
In communications, duplex is often used to control, or
indicate, who has control of the responsibility to echo text.
When operating at full duplex, characters you type are sent to
the remote, who then echoes them back to you, where they are
displayed. When using half duplex, on the other hand,
characters you type are echoed locally by the software you are
using and characters sent to the remote are not echoed. If
you see double characters on your screen, then you should set
duplex to full; if there should be characters printing on your
screen but there are not, then set duplex to half.
Local Area Network (LAN!
A system by which many microcomputers and peripherals may be
linked together, accessing common files from a single computer
called a "file server". The file server is usually a PC with
a large fixed disk. The file server may contain data bases,
software and files that can be shared simultaneously.
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Logon/Logof f
Establishing and breaking a communications link. When a
telephone link is made, the BBS will identify itself and
prompt the caller to "logon". The callers name, location, and
password constitute a unique identifier.
Modem
MOdulator/DEModulator. The modem converts binary electrical
signals (positive and negative charges) to voice frequency
(analog) signals. Binary impulses are a series of on/off
switches or clicks, while voice frequency signals are more
like waves, up and down, increasing and decreasing pitch. The
modem "modulates" the signals put out by the computer,
converting them from digital to analog form, then, at the
other end, "demodulates" the analog signals, converting them
back to digital form.
Parity
Because there can be garbled data, particularly on telephone
lines where the loss of a single bit is almost to be expected,
there must be some way to flag possible errors so the sending
computer can know that the data were not correctly received.
Parity is a relatively rough way of checking to assure that
each byte is properly transmitted. The normal ASCII set
(first 128 characters) can be represented with just seven bits
for each character. The eighth bit can be ignored or used as
a "parity bit". The parity bit is used to indicate whether
there is an even or an odd number of 1's in the byte
transmitted. In most early personal computers, only seven
bits were used and the eighth bit was either ignored or used
for parity. Now, however, with DOS and the extended ASCII
character set, all 8 bits are used to represent the 256
extended ASCII characters and no parity is used. With the
eighth data bit being used to store data, other means of
checking transmission integrity is used such as error-checking
protocols.
Protocols
Standardized send/receive commands that are part of most
microcomputer communications software. Both the sending and
receiving computer must run the same protocol. Protocols use
methods that are far more complex than simple parity checks
for error correction and the reliability is far greater, so
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they are especially useful for transmission of programs rather
than mere text. The software sends a block of data and a
coded query. The receiving software notes the query and sends
back a bit pattern depicting the data block received. If the
sending computer recognizes the response as identical to the
coded query, it proceeds to the next block. If there is an
error, the system resends the same block. The most common
protocols are XMODEM, YMODEM, KERMIT, and ZMODEM.
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APPENDIX D
BULLETIN BOARD DESCRIPTIONS
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AIR POLLUTION TRAINING INSTITUTE rAPTIl BBS
The Air Pollution Training Institute (APTI) offers the widest
scope of air pollution training in the United States. Funded
by the U.S. Environmental Protection Agency, APTI develops
instructional material for and provides technical assistance
to training activities conducted in support of the nation's
regulatory programs of air pollution abatement.
EPA-sponsored lecture and laboratory courses, using APTI
materials, are scheduled at several locations across the
country. Self instructional courses, providing opportunities
for individual training at home or in place of employment, are
obtainable from APTI. Training material is continually
updated, and individual courses undergo periodic major
revision.
APTI publishes a "Chronological Schedule of Air Pollution
Training Courses"; generally once a year. This publication
describes the training being offered with a description of the
APTI courses and how to obtain the training.
If you would like a copy of "Chronological Schedule of Air
Pollution Training Courses" contact the Registrar at (919)
541-2497.
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AIR ACT
The Clean Air Act Amendments Bulletin Board System (CAAA
BBS) is designed to provide access to information on the Clean
Air Act amendments of 1990. Through this electronic
information dissemination vehicle, the CAAA BBS allows
regulators, the regulated community and members of the general
public to easily obtain access to that information that is
relevant to the 1990 Clean Air Act amendments (CAAA). In this
manner, the task of understanding, implementing and complying
with the requirements of the new law will be made easier.
In addition to providing easy access to important
information on the CAAA, the CAAA BBS serves as a forum for
technical interchange at the working level among EPA, State
and local agencies and the private sector. The communications
section of the main menu allows users to send and receive
information from other users of the bulletin board.
The information that can be retrieved through the CAAA
BBS is organized according to the following fifteen sections:
* Purpose of the CAAA Bulletin Board
* Index
* General
* Clean Air Update
* Title I
* Title II
* Title III
* Title IV
* Title V
* Title VI
* Title VII
* Title VIII
* Title IX
* Title X
* Title XI
Although the subject of each of these sections is generally
self-evident, the type of specific information that can be
located in each section may not be. Consequently, the
information thar rr.ay be located in each of these sections is
described below. Because of the similarity of the sections
dealing with the various Titles of the CAAA, these are
discussed together.
Purpose of the CAAA Bulletin Board - This section explains the
purpose of the bulletin board.
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Index - This section contains an index to the bulletin board.
This index is useful to users of the bulletin board who may be
interested in a specific topic, but may not be sure where
information is located on the bulletin board.
General - This section contains information relating to the
CAAA and which are not specific to any one Title of the CAAA.
For example, definitions of terms, a listing of acronyms, and
summaries of specific topics (e.g., dispersion modeling,
ambient monitoring, certain source categories, etc.).
Clean Air Update - This section contains the full text of a
publication entitled "CLEAN AIR UPDATE" issued on a monthly
basis by EPA. The publication contains listings of: 1) the
times and locations of upcoming public meetings on Clean Air
Act programs, 2) upcoming regulatory actions, including a
contact person, 3) reports that have been recently released
that relate to the implementation of the Clean Air Act, and 4)
major Federal Register notices that were published in the
month preceding the publication of the Clean Air Update.
Titles I - IX - These sections contain information specific to
a Title of the CAAA. If a user of the bulletin board selects
a particular Title, a listing of three submenu items will be
seen on the screen. These submenu items are the same for all
Titles and include the following: (1) Clean Air Act text and
summaries, (2) Policy/Guidance documents, and (3) Status of
rules and other projects. The information that is contained
within each of these subsections is described below.
(1) Clean Air Act text and summaries - This subsection
contains actual text of each Title of the CAAA. The text is
presented in a variety of formats to allow the user to select
the form that best fits their specific needs. For example,
summaries of each Title are included for those users that are
only interested in a cursory review of a particular Title.
This subsection also contains information that allows the user
to better understand the contents of the CAAA. For example,
table of contents and summaries of regulatory requirements
that are contained within each Title are included.
(2) Policy/Guidance documents - This subsection contains those
policy ana guideline documents that have been developed by EPA
as a result of the CAAA. This subsection will assist bulletin
board users in identifying and obtaining copies of the various
documents that have been developed by EPA in assisting State
and local air pollution control agencies in understanding and
complying with the programs established by the CAAA.
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(3) Status of rules and other projects - This subsection
contains information relating to those regulatory development
projects and other projects that are being implemented as a
direct result of the CAAA and allows the user to obtain an
understanding of the status, scope and timing of Federal
implementation activities. Parties interested in a specific
rulemaking activity will be able to find information on that
rulemaking activity within this subsection.
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CONTROL TECHNOLOGY CENTER (CTC) BBS
The CTC is a cooperative effort for engineering assistance to
State and local air pollution control agencies (and private
companies to an extent) by the Air and Engineering Research
Laboratory and the Office of Air Quality Planning and
Standards. It is a cooperative effort with the State and
Territorial Air Pollution Program Administration (STAPPA) and
the Association of Local Air Pollution Control Officials
(ALAPCO).
The CTC provides three levels of assistance:
* HOTLINE - (919) 541-0800
(FTS) 629-0800
* Engineering Assistance
* Technical Guidance
The CTC's goal is to provide technical support to State and
local agencies and EPA's Regional Offices in implementing air
pollution control programs. The CTC assists regulatory and
permitting agencies, but does not provide policy guidance and
compliance advice which is the responsibility of the EPA
Regional Office. CTC services are available at no cost to
State and local air pollution control agencies and EPA
Regional Offices. Other government agencies may use the
HOTLINE for technical assistance or to order CTC documents.
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CLEARINGHOUSE FOR INVENTORIES AND EMISSION FACTORS (CHIEF) BBS
The CHIEF BBS provides access to tools for estimating
emissions of air pollutants and performing air emission
inventories. Some of the tools provided by CHIEF are as
follows:
SPECIATE - Speciation factors are used to estimate emissions
of air toxics from emission factors or estimates of total
volatile organic compounds (VOCs) or particulate matter (PM).
XATEF - A data base management system that contains crosswalk
data and air toxic emission factors.
SIMS - The Surface Impoundment Modeling System (SIMS) is a
personal computer software package for estimating air
emissions from surface impoundments or wastewater collection
devices.
AFSEF - AIRS/Facility Subsystem Emission Factors (AFSEF)
allows the user to access the AIRS/AFS Source Classification
Codes and Emission Factor listing on PC diskette for use with
the Aerometric Information Retrieval System (AIRS) Facility
Subsystem, the computer data base for criteria pollutant point
source data.
CHIEF serves as EPA's central clearinghouse for the latest
information on air emission inventories and emission
factors. Emission estimation data bases, newsletters,
announcements, and guidance on performing inventories are
included in CHIEF.
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EMISSION MEASUREMENT TECHNICAL INFORMATION CENTER fEMTIC) BBS
The EMTIC BBS provides technical guidance on stationary source
emission testing issues, particularly to people who conduct
and/or oversee emissions tests in support of the development
and implementation of emission standards, emission factors,
and State implementation plans.
The Emission Measurement Technical Information Center BBS was
formed to function as a major component of EMTIC's technical
information exchange network focusing on emission test methods
with the purpose of promoting consistent and accurate test
method application in development and enforcement of national,
state, and local emission prevention and control programs.
EMTIC offers computer programs, stack testing information,
test methods, regulations, EMTIC documents, the latest changes
to methods, bulletins, news, contact names and phone numbers
within EMTIC that have particular responsibilities, public
domain software and E-MAIL service.
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OFFICE OF AIR QUALITY PLANNING AND STANDARDS fOAQPS1 BBS
The Office of Air Quality Planning and Standards (OAQPS) is
responsible for the development of national programs,
technical policies, regulations, guidelines and criteria for
air pollution control. The OAQPS Bulletin Board is an
information board that provides the organizational structure
of OAQPS along with the organizational structure of the four
Divisions within OAQPS. Information relative to services
rendered by OAQPS is also available from this BBS,
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SUPPORT CENTER FOR REGULATORY AIR MODELS f SCRAM) BBS
The SCRAM BBS is the Agency's primary source for the
acquisition of the computer code for the regulatory air
models. Changes to the models, including updates,
corrections, and new regulatory codes are main features of the
SCRAM. We encourage FREQUENT ACCESS to determine "what's
new?". Significant announcements and new information will
always be indicated in the SCRAM ALERTS section of the BBS.
In addition to code, model related news and important
bulletins concerning model modifications, status, etc. are
provided. An especially important feature is the "Model
Change Bulletin" (MCB) provided for each model/program. MCB#l
lists information on the initial status of that model; new
MCB's are posted for each model as required when models are
updated. A model status report is provided that lists all of
the models available along with the latest model change
bulletin and indicates if documentation is available on the
SCRAM BBS.
Other features provided by the SCRAM BBS include:
* Surface meteorological data
* Mixing height meteorological data
* Model clearinghouse memos and information
* Subject conferences concerning modeling issues
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TECHNICAL REPORT DATA
(Please read Instructions on the reverse before completing)
1. REPORT NO. ' 2.
EPA-450/4-91-020
4. TITLE AND SUBTITLE .
Office of Air Quality Planning and Standards
(OAQPS) Technology Transfer Network (TTN)
User's Manual
7. AUTHOR(S)
Herschel W. Rorex
9. PERFORMING ORGANIZATION NAME AND ADDRESS
Source Receptor Analysis Branch
Technical Support Division
U. S. Environmental Protection Agency
Research Triangle Park, N.C. 27711
12. SPONSORING AGENCY NAME AND ADDRESS
3. RECIPIENT'S ACCESSION NO.
5. REPORT DATE. ,-..-.,
August 1991
6. PERFORMING ORGANIZATION CODE
8. PERFORMING ORGANIZATION REPORT NO.
10. PROGRAM ELEMENT NO.
11. CONTRACT/GRANT NO.
13. TYPE OF REPORT AND PERIOD COVERED
14. SPONSORING AGENCY CODE
EPA-450/4-91-20
15. SUPPLEMENTARY NOTES
EPA Project Manager: Jerome B. Mersch
16. ABSTRACT
The office of Air Quality Planning and Standards (OAQPS) Technology
Transfer Network (TTN) is a network of electronic bulletin boards
that provide information and technology exchange in areas related
to air pollution control such as, air quality modeling, emissions
testing control technology, emissions inventories and factors,
training and the Clean Air Act Amendments. This manual describes
the functions of the system and provides instructions for operating
the system.
WORDS AND DOCUMENT ANALYSIS
Air quality modeling
Emissions inventories
Clean Air Act Amendments
Air pollution training
Emissions measurements
b.lOENTIFIERS/O°EN ENDED TERM:
User's Manual
Technology transfer
c. COSATI I icki 'Group
DISTRIBUTION S T A "
unlimited
'unsciuasTsicf il
i 21 \O. OF
20 SfcCuRITY .Ci.-j53 LT'us
unclassified
!22 PRICE
EPA Form 2220-1 (Re* j-77
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U.S.. Envlronr. ?:it -."'.
Region 5, Lro .-;.'-'/
230 S. Dearborn :-<-.:,, Eoou
flhioafo, IL 60604
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