gtpd2m29Data Communications Services Reference

System Usage Terminal Operations

This section describes the language used and the actions taken by a terminal operator in order to gain access to the environment (application programs and system facilities) controlled by the Message Routing Facility.

Log In

Input from any terminal not permanently logged in and not classified as the PRIME CRAS (PRC):

LOGI xxxx

Where:

xxxx
The name of the application.

Explanation: The terminal operator requests to be connected to the application referenced in the message.

Normal Response: LOGI COMPLETE

The connection has been accomplished.

Error Response:

  1. INVALID FORMAT

    The format of the input message is in error.

  2. INVALID APPLICATION

    The name of the requested application does not appear in the RCAT.

  3. APPLICATION NOT AVAILABLE

    The application is currently not active (stopped).


Log Out


LOGO

Explanation: The terminal operator requests to be disconnected from the application currently logged to.

Normal Response: LOGO COMPLETE

The terminal has been disconnected and it is idle. A log-in message may now be entered.

Error Response: NOT LOGGED TO APPL

The terminal is not currently logged in.

Combination LOGO/LOGI Messages

A message of the type defined LOG IN can be entered from a non-SNA terminal to concurrently log off and log in to an application. Normal and error responses, as specified for the above messages, apply to the combination messages.

Inputting Operator Commands

In order to input a command from a terminal, the terminal user must first log in to the System Message Processor. The application name specified in the log-in message must be SMPx, where x is the CPU ID of the TPF system to which the terminal operator intends to send the commands.

As already described, the PRC terminal is always logged in to its own SMP.

Send/Receive an Unsolicited Single/Broadcast Message

Terminal actions required to send or receive an unsolicited message are described in DCSR-UMP.