X25AM Configuration and Management Manual

Overview of the X25AM Subsystem
X25AM Configuration and Management Manual—523424-004
2-3
X25AM Subdevice
Subdevices are configured with the following characteristics:
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An X25AM protocol, indicating the desired type of connectivity.
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Circuit type, either a PVC or a switched virtual circuit SVC.
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A logical channel if the subdevice is on a PVC.
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Optional user facilities may be specified if the subdevice is on an SVC.
You use SCF commands to the X25AM subsystem to start, stop, alter, and monitor
X25AM subdevices.
For detailed information about how to use SCF for the X25AM lines and subdevices,
see Section 4, SCF Commands for the X25AM Subsystem. For detailed information
about the SPI implementation for X25AM, see the X25AM Programming Manual.
Figure 2-1 illustrates the physical and logical components of the X25AM subsystem.
Figure 2-1. X25AM Subsystem Components
VST0201.vsd
X25AM
Lines
NonStop NS-series or NonStop S-series system
X.25
PSDN
X25AM
I/O Process
X25AM
I/O Process
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•
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(X25AM
Subdevices)
Circuits
Application
Process
Application
Process
Application
Process
Application
Process
Application
Process
Application
Process
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•
•
•
•
•
•
•
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SWAN
Concentrator