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MERLIN LEGEND Communications System Release 6.1
Network Reference
555-661-150
Issue 1
August 1998
Call-Handling Scenarios
Page 2-72Network Configuration Scenarios
2
Table 2–18. Intersystem Calling: Scenario 3, Continued
Type of Call Caller
Caller
Dials
Routed
via... Recipient Recipient Sees...
Outside PRI-ANI dial-plan
routed call to local extension
on System M. Extension is
busy or unavailable.
centralized VMS/AA provides
coverage.
Outside to
System M: ext 3254
All PRI with
PRI routing
System M: Call is sent to
integrated VMI calling
group 7771 (with VMI
conversion number
6999). The system finds
the group member in the
non-local dial plan.
Routes via UDP pattern
4 to tandem PRI trunk
pool 8761. UDP routing
absorbs 6999 and
prepends 7771 (System
L’s centralized VMS/AA
calling group extension).
Call is answered by
centralized VMS/AA on
System L. Calling
information sent to
centralized VMS/AA
indicates outside call. If
caller leaves a message,
Message Waiting light is
updated at extension
3254. The Message
Waiting light update is
sent over private network
using PRI signalling D-
channel.
Not applicable
Continued on next page