Nortel DMS-250 - Backward Clearing Two Switch Scenario 2

MAUUI over RELEASE MESSAGE for NCAUUI 18-7
Digital Switching Systems DMS-250 ISDN Reference Manual MWC14 (CSP14)
Backward Clearing Two Switch Scenario 2
The following figure shows how the terminating user releases an NCAUUI
call using a Q.931 DISConnect message or a Q.931 RELease message
before an NCAUUI call is connected. A UUI request is included in this
message, but the UUI request is not delivered to the originating MWC
DMS-250. A UUI request is not delivered because the UUI request cannot
be accomadated in the data parameter of the SCCP CREF message.
Figure 18-6
Backward Clearing Two Switch Scenario 2
Originating PBX
Terminating MCI DMS–250
Terminating PBX
SETUP
SETUP
Originating MCI DMS–250
CR (MAUUI)
Connection Request
(NCAUUI and MAUUI Request)
(NCAUUI and MAUUI Request)
DISConnect/RELease
(MAUUI)
RELease COMPlete
CREF
RELease
Release Complete
Billing Record should have: Billing Record should have:
TP7Q = 1
UUS_TYPE = 0
UUI_COUNT = 1
TP7Q = 1
UUS_TYPE = 0
UUI_COUNT = 1
Connection Refused