Specifying a session parameter

A BIND request and response contain parameters that specify certain protocols used by the PLU and SLU for the session. This appendix describes the format of the session parameter as seen by a VTAM® application program. The macroinstructions used to establish a session and specify session parameters are described in Establishing parameters for sessions. For a detailed description of the session parameters themselves and how to use them, see:

Establishing and terminating sessions with logical units, as well as the
SNA Format and Protocol Reference Manual: Architectural Logic, SNA Formats, SNA Sessions between Logical Units, and
SNA Concepts and Products

VTAM supplies a default logon mode table containing examples of session parameters for certain devices. This table is described in detail in the z/OS Communications Server: SNA Resource Definition Reference.

Note: This appendix describes fields applicable to session parameters and is not to be used to locate fields in an SNA BIND request. Because the SNA BIND request is created by VTAM and not the application program, the BIND request contains fields set by VTAM that have no significance to the application program. Also, corresponding fields in the session parameters and the BIND request can have different formats and be located in different positions.