Nortel Remote Gateway 50 Configuration Manual page 130

Page 130 of 258
ALTPrefix
553-3001-207 Standard 2.00
Alternative Call Routing for Network Bandwidth Management
Configure one of these two modes of operation (Bandwidth insufficiency or
All Calls) on a zone basis.
The Alternative Call Routing for NBWM feature deals only with interzone
calls. This feature is configurable for main office and branch office zones, not
virtual trunk zones.
It is possible to configure this feature to re-route all calls to MCDN or PSTN
routes and still maintain the main office-branch office architecture.
When the Alternative Call Routing for NBWM feature is invoked, the dialed
number is modified with a prefix (called the ALTPrefix) inserted at the
beginning of the digit string. The ALTPrefix can have a maximum of seven
digits.
The system handles the call with the ALTPrefix inserted as if the user had
dialed the digits.
The ALTPrefix applies to the zone in which the call originates. There is one
ALTPrefix for each zone that requires alternate routing.
All Call Servers must be able to translate the ALTPrefixes for all zones that
require Alternative Call Routing for NBWM.
January 2006