OSI/AS Configuration and Management Manual

Introduction
OSI/AS Configuration and Management Manual—424119-001
1-8
TAPS Processes
TAPS Processes
TAPS processes manage Session Layer, Presentation Layer, and ACSE connections with
remote peer entities. TAPS processes are Transport Layer users and providers of session,
presentation, and ACSE services. That is, they use the transport connections provided by
the TSP processes (via the OSI/TS subsystem) to establish Session Layer, Presentation
Layer, and ACSE connections with peer entities. TAPS processes also provide Session
Layer, Presentation Layer, and ACSE services to applications. Each OSI/AS subsystem
contains at least one TAPS process. Each TAPS process can manage several
simultaneous Session Layer, Presentation Layer, and ACSE connections.
TAPS processes are nonprivileged processes that are part of the Compaq OSI/AS
subsystem.
OSI Manager Process
Each OSI/AS subsystem requires exactly one OSI manager process. The OSI manager
process is the focal point for all subsystem-management activities.
Some of the most important functions of the OSI manager process are the following:
•
Selecting processes to provide resources for applications that request services
•
Starting and stopping TSP and TAPS processes, and storing information on the
states of these processes
•
Handling inquiry and diagnostic information for the subsystem
The OSI manager process is a nonprivileged process that is part of the Compaq OSI/AS
subsystem.
Note. The ACSE standards use the word “association” for an ACSE connection, which
maps directly onto a Presentation Layer connection. Because of the need to make general
statements about connections that apply similarly to ACSE and to the layers below it, the
Compaq OSI manuals use the word connection for all layers.