IBM 3770 User Manual

3770Link SNA/RJE Emulation

Demo Version User’s Guide

Table of Contents

Notational Conventions...............................................................................ii

Ordering Information .................................................................................. 1

Technical Support .......................................................................................2

Introduction to 3770Link ............................................................................ 3

3770Link Features....................................................................................... 4

3770 Emulation Features..................................................................... 4

Advanced Features.............................................................................. 4

Script Language For Unattended Operation........................................ 4

RJE Server Features............................................................................5

Supported Host Environments............................................................. 5

3770Link System Requirements..........................................................5

SSI SyncPlus SDLC Adapter (optional with 3770Link) ..................... 5

Software Installation.................................................................................... 6

Media and Files........................................................................................... 6

Running 3770Link GUI and Simulating an Interactive Session.................. 7

Running 3770Link SO and Simulating an Unattended Session................... 9

Simulating Sending and Receiving Files with the Demo........................... 10

Script Files ................................................................................................ 11

Script Commands......................................................................................11

Sample Script Files.................................................................................... 11

3770Link Script Language........................................................................14

Command Line Options ............................................................................ 18

i

3770Link

Notational Conventions

The following notation is used in this guide:

3770Link Refers to the 3770Link package in general.

3770Link GUI Refers specifically to the graphical user interface

program (“3770link.exe”)

3770Link SO Refers specifically to the console style script-only

program (“3770so.exe”)

ii

Demo User’s Guide

3770Link Demo Version User’s Guide

Thank you for requesting the 3770Link demo diskette. This demo
introduces you to the “look-and-feel” of 3770Link and to the extensive
script file capabilities found within. The demo simulates online sessions
and therefore does not require an adapter or modem to be present in your
system.

Install the demo by following the instructions below and take 3770Link for
a test drive. Remember you’re running the full-blown product − only
we’ve done little software “magic” that eliminates the need for the
mainframe system to communicate with.

Ordering Information

To order 3770Link, call 800-634-3122 or 512-345-2211.

1

3770Link

Technical Support

Once you’ve ordered 3770Link, Serengeti Systems provides technical
support for as long as you use 3770Link at no additional cost to you.
Support is available via the Internet from our web site or via e-mail, or by
telephone.

• Access to Serengeti Technical Support is available from within the

3770Link GUI by way of your web browser or e-mail (assuming either
or both of these are installed on the same PC as 3770Link.) Open the
Help menu, click Technical Support, and follow the links to the
Serengeti Web Page Technical Support or to access our support staff
via e-mail.

• Visit the Serengeti Web Page (http://www.serengeti.com) directly and

click on Technical Support to access our online technical database.
You’ll find answers to many of the most commonly asked questions at
your fingertips.

• For fast response to your technical support issue, sum up your question

or problem in writing and submit this via e-mail to
[e-mail]. We’ll respond to you by e-mail or a
telephone call (if appropriate) as quickly as we can.

• If you cannot find the answers you’re searching for online or you do

not have e-mail access, you may call us at [phone] and ask for
technical support during our normal business hours of 9AM to 5PM
Central Time Monday through Friday.

2

Demo User’s Guide

Introduction to 3770Link

3770Link combines full-featured SNA RJE communications with a
comfortable user interface. You can use the intuitive menus for interactive
operations or take advantage of the powerful script language and/or
programmatic control for automated, unattended sessions.

3770Link’s user interface utilizes menus, dialog boxes, and context
sensitive help. There are no confusing, cryptic commands to remember.
3770Link’s user interface allows you to interactively initiate a
communication session with the host computer through menu options such
as Connect or Auto Dial. Once connected, data can then be sent through
menu options such as Send File or Send Logon; in interactive mode,
incoming data is automatically received by 3770Link if the line is
connected. To terminate an interactive session, the Disconnect menu
option is used.

For automated operations and unattended sessions, 3770Link incorporates
a powerful script language. 3770Link SO’s script language commands
automate the functions of 3770Link GUI’s menus. There are commands
for looping, branching, and error control. There’s a command to run
external processes, and others that provide the linkage for 3770Link
client/server operation. Auto-dial, answer, and time activated commands
are available. Later, after a script is run, you can review the results by
viewing 3770Link’s log file which contains all commands, messages, and
command results.

For developers, script sessions can be invoked from and controlled by your
application to integrate SNA RJE communications into your custom
applications. For advanced applications, 3770Link can be configured as an
SNA RJE server for your custom written client application.

3

3770Link

3770Link Features

3770 Emulation Features

• IBM 3776/3777 Model 3 or Model 4 emulation (SNA

Logical Unit type 1)

• LU−LU and SSCP−LU sessions

• Unlimited number of concurrent sessions

• Receive to console, printer, or disk file

• Automatic ASCII↔EBCDIC translation

• PDIR record recognition

• FMH 1 and FMH 3 support

• Data compression and expansion

• Expansion of compacted host data streams

Advanced Features

• Automatic server LU recognition

• Formatted (automatic) and unformatted logons

• Detailed log file with date and time stamps

• Automatic concatenation of transmitted files

• Automatic naming of received files

• Supports multiple configurations

• Transmission and reception of binary files

• Real-time session statistics

• Configurable ASCII↔EBCDIC translation tables

Script Language For Unattended Operation

• Execute scripts from the command line, batch files, parent

process, or menu

• Execute external processes and evaluate results

• Accept commands from a client process

• Command line parameter substitution

• Call scripts from within scripts

• Time activated commands

• Branching and looping commands

• Extensive result codes and error testing

4