Logon mode table

VTAM® has an IBM-supplied logon mode table named ISTINCLM that provides generally accepted session protocols for a basic list of IBM® device types. See Default logon mode table (ISTINCLM) for the macroinstructions and operands that make up the default logon mode table.

For your information, the code released to you as the VTAM licensed program includes the source language for this table.

The source language is located in SYS1.ASAMPLIB.

You can modify or replace the IBM-supplied logon mode table, provided that the modified or replacement table has the same name as the IBM-supplied table and that the IBM-supplied table is deleted. However, you should create a supplemental table instead of deleting the IBM-supplied table, because you might need the IBM-supplied table for problem determination.

You can associate a logon mode table with a logical unit by specifying the table's name in the MODETAB operand of the logical unit's definition statement. If you do not designate a logon mode table for a logical unit, VTAM uses the IBM-supplied logon mode table, ISTINCLM. Furthermore, because you cannot code a resource-specific logon mode table for dynamic CDRSCs, VTAM uses the IBM-supplied logon mode table, ISTINCLM.

Regardless of the source of the logon or what session parameters are associated with the logon, the application program decides which session parameters are to be used for the session.