gtps2m17ACF/SNA Data Communications Reference

TPF/APPC Components

TPF/APPC provides TPF's implementation of the LU 6.2 architecture. TPF/APPC support consists of the following components:

Presentation services
Processes the TPF/APPC verbs.

Resource manager
Services requests relating to conversations and activates the functions required of the half-session components.

Session manager
Is responsible for insuring that the underlying LU-LU session needed for a conversation is available.

Half-session
Is primarily responsible for controlling the data traffic flow for a session. This component includes the:

Figure 31 shows how the components relate to 1 another and what types of interfaces are used between them.

Figure 31. TPF/APPC Component Flow Diagram