APPC/MVS TP Conversation Callable Services

The APPC/MVS TP conversation callable services are based upon existing SNA LU 6.2 verbs and CPI Communications calls. These services are intended for use in conversations by transaction programs and APPC/MVS servers.

Programs that use APPC/MVS TP conversation services must use one of the two methods described Required Modules to access the APPC/MVS system services.

The following table lists the TP conversation callable services that have more than one associated call name. This chapter describes the current versions of the calls, which are the preferred programming interfaces for these services. The previous versions are described in Previous Versions of APPC/MVS Callable Services.

Table 1. TP Conversation Callable Services with Multiple Call Names
Service Name	Previous Call Name	Current Call Name	Reference for Current Call
Allocate	ATBALLC and ATBAL2	ATBALC5	ATBALC5 - Allocate (For OS/390 Release 8 through z/OS V1R6)
Get_TP_Properties	ATBGETP	ATBGTP4	Get_TP_Properties