Network Scenarios - Nortel DMS-250 Reference Manual

Figure 19-15
ISUP-PRI Call Clearing before Connect when Treatment not Applied
The second scenario is similar to the first scenario except that treatment is
applied at this switch. The UUI from the received call clearing message is
copied into an ISUP CPG message and transported to the originating ISUP
agent before the treatment is applied.
The following scenario shows the "ISUP to PRI call clearing before connect
when treatment is applied" scenario.
Figure 19-16
ISUP-PRI Call Clearing before Connect when Treatment Applied

Network Scenarios

This section concentrates on multiple switch scenarios where the terminating
switch applies tones/announcements to the originating agent.
ISUP IAM (UUI)
ISUP ACM (UUI)
ISUP REL (UUI)
ISUP RLC
ISUP IAM (UUI)
ISUP ACM (UUI)
ISUP CPG (UUI)
Applied tones or announcements
ISUP REL
ISUP RLC
Digital Switching Systems DMS-250 ISDN Reference Manual MWC14 (CSP14)
MWC DMS-250
Q.931 Setup (UUI)
Q.931 Call Proceeding
Q.931 Alerting (UUI)
Q.931 DISConnect (UUI)
Q.931 RELease
Q.931 RELease COMPlete
MWC DMS-250
Q.931 Setup (UUI)
Q.931 Call Proceeding
Q.931 Alerting (UUI)
Q.931 DISConnect (UUI)
Q.931 RELease
Q.931 RELease COMPlete
MAUUI 19-15