ULTRIX Guide to IBM Terminal Emulation for VAX Processors

This document, titled "ULTRIX Guide to IBM Terminal Emulation for VAX Processors" (Order Number: AA-MF04B-TE, June 1990, for ULTRIX Version 4.0 or higher), introduces and provides comprehensive instructions for the IBM 2780/3780 Terminal Emulator software package.

The guide explains how this software allows an ULTRIX operating system on a VAX or MicroVAX processor to emulate an IBM 2780 or 3780 terminal, facilitating file transfer using the Binary Synchronous Communications (BSC) protocol.

Key aspects covered include:

• Features: Multiuser support, mail notification, automatic ASCII/EBCDIC translation, and transparent/nontransparent data transfer.
• Requirements: Detailed hardware specifications for both the IBM and ULTRIX ends of the communication line, and software requirements (IBM operating system supporting 2780/3780 devices, ULTRIX Version 4.0 or higher).
• Setup: Instructions for modifying system configuration and startup files, including rebuilding the kernel.
• Usage: How to prepare files using Job Control Language (JCL), send files using the 2780e/3780e commands with various options (e.g., space compression, priority, file naming), and how the 2780d program automatically handles transmission and reception.
• Maintenance: Tasks for system administrators such as creating default sign-on cards, disabling and re-enabling the emulator, obtaining records of file transfers, and cleaning the spool directory.
• Troubleshooting: Interpretation of error messages generated during file preparation (2780e/3780e errors) and transmission (2780d errors), along with suggested corrective actions.

The manual is aimed at system administrators, network administrators, or MicroVAX users familiar with ULTRIX commands, system configuration, and networking concepts.