Network Rejection - Nortel DMS-250 Reference Manual

message as a valid rejection even though there is no B-channel to
disconnect.
Figure 14-3
NCAUUI Invocation Rejection from Terminating User
Originating PBX
SETUP (NCAUUI Request)
RELease w/cause value of 29
Originating PBX
SETUP (NCAUUI Request)
RELease w/cause value of 29

Network Rejection

The DMS-250 rejects an NCA-TSC request with a RELease or RELease
COMPlete message. Please refer to Figure 14-4 "NCAUUI Invocation
Rejection from Network" for network rejection.
When TSC resources are busy, the network rejects the NCA-TSC request.
TSC resources are busy when one of the following CC resources cannot be
allocated:
"facility rejected"
RELease COMPlete
"facility rejected"
RELease COMPlete
OCCB
HCB
HDB
UUS extension block
SRU
Digital Switching Systems DMS-250 ISDN Reference Manual MWC14 (CSP14)
DMS-250
SETUP (NCAUUI Request)
RELease w/cause value of 29
"facility rejected"
RELease COMPlete
DMS-250
SETUP (NCAUUI Request)
DISConnect w/cause value of 29
"facility rejected"
RELease COMPlete
NCAUUI 14-5
Terminating PBX
Terminating PBX