DCP Series X.25 Packet Switched Communications Software (PSCS ...

Introduction
1.1.12. Message Tracing
This feature provides message tracing capabilities in X.25 PSCS using the Network
Management Service (NMS) TRAC command. Trace commands are entered at the NMS
interface console to activate and control X.25 PSCS packet level 2/3 and 3/4 interface
data tracing. Trace information is then logged to the hard disk on the DCP for later
retrieval. This information is used for network debugging and software maintenance.
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1.1.13. 1988 ITU/TSS (CCITT) Compliance
X.25 PSCS is fully compliant with required ITU/TSS (CCITT) 1988 X.25
recommendations.
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1.1.14. Coded Character Sets
Internationalization allows terminals to be configured with a coded character set
(CCS). For X.25 PSCS, this includes asynchronous terminals using an X.3 PAD to
connect to the X.29 PAD interface feature, and UNISCOPE ® workstation terminals
connected to a UTS Cluster Controller running UTS X.25 PSCS software. The CCS
value may be configured using the CCS parameter on the PRCSR or TERM
configuration statements. When these terminals open DCA sessions to a host
application ($$OPEN command), the CCS value is encoded into the display zone
parameter field of the INT-1 protocol's READP response HIC string. For more
information, see Section 6.9 of this guide, “TERM — Defining a Terminal.”
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1.1.15. Dynamic Line Switching
1–10
Using the NMS SWT=ACTN=get/set LINE=line command for dynamic line switching
moves any resilient configured X.25 trunk to the other Telcon. If the X.25 trunk is
configured on multiple X.25 lines (that is, more than one DTE statement is used to
reference different PDNGRP statements), and only one line is switched to the other
Telcon, the entire X.25 trunk will be moved without regard to the status of the other
X.25 lines.
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