Appendix A - Cause Code Tables - AT&T 7506 User Manual

Appendix A — Cause Code Tables
The Text option allows you to select numeric (diagnostic) or verbal formats for the ADM's
presentation of network generated call progress and error code information. These tables are used
to translate between numeric codes and their English text equivalents.
In the following tables, there are references to unknown numeric cause and diagnostic codes in
the form of xxx and nnn. Both xxx and nnn refer to one, two, or three digit numeric values that
may appear. At this time, no English translation exists for these codes.
Table A-1 shows CCITT X.25 cause messages associated with D-channel packet switched data
calls. Tables A-2, A-3, and A-4 show CCITT Q.931 signal, cause, and progress messages
associated with B-channel circuit switched data calls.
Appendix A — Cause Code Tables A-1