AT&T DS1/DMi/ISDN-PRI Telephone User Manual


 
C. ADMINISTRATION PROCEDURE SUMMARY
This appendix examines administrative procedures in DEFINITY
®
Generic 2 that relate to ISDN-
PRI. It describes how pertinent administrative fields relate to ISDN-PRI level-3 message contents
and general feature operation.
This appendix is organized in ascending administrative-procedure number. Differentiations are made
between System 85 R2V4 and Generic 2 where appropriate.
PROCEDURE 000 WORD 3 (Generic 2 Only)
Field 1 of this word assigns the bearer capability (BC) class of service (COS) number for the
extension number. One implication of this COS is the pattern or preference selected for this
extension on outgoing calls (see the Procedure 309 Word 5 and Procedure 321 Word 5 sections later in
this appendix).
The 10 BCs are defined in field 16 of procedure 014, word 1. This definition codes the BC
information element (IE) in the setup message when the extension (entered in field 1 of procedure
000, word 3) accesses an ISDN-PRI trunk for an outgoing call.
The following defines the encoding of the BC IE for the 10 possible BCs.
Voice
Mode 1
Mode 2
Opcode: 4 (assuming no codeset mapping)
Information transfer capability: speech
Coding standard: CCITT
Information transfer rate: 64K-bps
Transfer mode: circuit mode
Layer and protocol identification: CCITT Mu-law speech (layer 1)
Opcode: 4 (assuming no codeset mapping)
Information transfer capability: restricted digital information
Coding standard: CCITT
Information transfer rate: 64K-bps
Transfer mode: circuit mode
Layer and protocol identification: rate adaption as specified in 1.461 (layer 1)
User rate: 56K-bps
Synch/asynch: synch
Opcode: 4 (assuming no codeset mapping)
Information transfer capability: restricted digital information
Coding standard: CCITT
Information transfer rate: 64K-bps
Transfer mode: circuit mode
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