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NCAUUI 14-15
rejecting the NCAUUI request. If the received TSID and the switch ID of
the switch that made the DAP request match, the TTG that the DAP
receives, the DMS-250 switch uses the value to establish the NCA-TSC.
If the TTG referenced in table VPNTRMRT is not an in–service PRI agency,
the DMS-250 switch 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 rejecting the NCAUUI request.
Digital Switching Systems DMS-250 ISDN Reference Manual MWC14 (CSP14)
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