Nortel-networks SRG 50 NN43001-307 Manual de usuario Pagina 169

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Description 169
Sequence of events in the call The information that follows refers to
Figure 68 "Call between a main office telephone and a branch office
telephone" (page 168) and Figure 69 "Digits dialed and outpulsed with
Alternative Call Routing for NBWM" (page 169).
Figure 69
Digits dialed and outpulsed with Alternative Call Routing for NBWM
1. IP Phone User A in the MO zone dials IP Phone B in the BO2 zone
(DN 3121) (action labeled 1 in Figure 68 "Call between a main office
telephone and a branch office telephone" (page 168)).
2. The main office Call Server determines there is insufficient bandwidth
between the two zones.
3. The Call Server inserts the ALTPrefix configured for the MO zone
prior to IP Phone B’s telephone number. The rebuilt number contains
the ALTPrefix.
Example: ALTPrefix assigned is 777. The dialed number becomes 777
3121.
4. The call is routed by CDP or VNR to the outgoing route using an RLI.
Example: 7773 is a steering code, translated to go to an RLI where
there is one entry, a PSTN trunk route.
5. The main office manipulates the digits and the call is routed to the PSTN
in the MO zone (action labeled 2 in Figure 68 "Call between a main
office telephone and a branch office telephone" (page 168)).
Example: Use DMI to delete and insert digits on the PSTN trunk route.
delete 3 digits (remove the ALTPrefix 777)
Nortel Communication Server 1000
Main Office Configuration Guide for SRG 50
NN43001-307 02.02 Standard
Release 5.0 3 December 2007
Copyright © 2005-2007, Nortel Networks
.
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