IBM manual Introduction to 3770Link, Demo User’s Guide

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.

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