Nortel Networks Remote Gateway 50 - Manual (Page 140)

Page 140 of 258 Alternative Call Routing for Network Bandwidth Management
553-3001-207 Standard 2.00 January 2006
Figure 45
Illustration showing 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 44 on
page 138 ).
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.