14-14 NCAUUI
297-2521-106 Standard 23.01 March 2001
Figure 14-6
In-Switch Suppcode Collection
Originating PBX
DMS-250
SETUP (NCAUUI Request)
ADF DAL Request
ADF Suppcode Response
DAP
without routing information
Collect
suppcode
filed in
table
MLTATTR
ADF DAL Request w/ suppcode
ADF Routing Response or
ADF Failure Response
Suppcode
collected
The system only supports suppcodes filed in-switch in accordance with
existing procedures for data calls. The system does not support user dialed
suppcodes. The DMS-250 switch sends a Q.931 RELease message with a
cause value of 21 “Call Rejected,” location code of “Transit,” and coding
standard of “CCITT” to the originating user.
If the DAP rejects a NCAUUI request, the DAP sends an ADF Failure
Response message to the DMS-250 switch. The DMS-250 switch then sends
a Q.931 RELease COMPlete message with a cause value of 21 “Call
Rejected,” location code of “Transit,” and coding standard of “CCITT” to
the originating user.
The DMS-250 switch routes NCAUUI calls through table VPNTRMRT. The
DMS-250 switch does not route NCAUUI calls through table VPNIMTRT.
After receiving the ADF Routing Response, call processing routes the Q.931
SETUP message indicating NCAUUI to the terminating PRI user based on
the TTG. The subsequent address digits that the switch receives from the
DAP at the DMS-250 switch are outpulsed as the Called Party Number IE in
the outgoing Q.931 SETUP message.
The TSID that the DAP receives must match the switch ID of the switch that
made the DAP request. If the received TSID and the switch ID of the switch
that made the DAP request do not match, the DMS-250 switch sends a
Q.931 RELease message with a cause value of 21 “Call Rejected,” location
code of “Transit,” and coding standard of “CCITT” to the originating user
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