gtps2m17 | ACF/SNA Data Communications Reference |
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:
- Data flow control component, which controls the flow of data between
half-sessions,
- Transmission control component, which controls the flow of data between
the half-session and path control.
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