Nortel Networks NN43001-314 - Manual (Page 143)

Operating parameters 143
The configuration and provisioning for the All Calls mode is exactly the
same as the regular Alternative Call Routing for NBWM feature except that
the Alternate Routing for All Calls option is selected in LD 117 or Element
Manager.
Operating parameters
This feature applies to all CS 1000 systems.
This feature applies to station-to-station, interzone calls. The call can be
between IP Phones or a TDM telephone at the main office and an IP Phone
at the Branch Office.
This feature is configurable for main office and Branch Office zones, not
virtual trunk zones.
The operation of the Alternative Call Routing for NBWM feature depends on
the proper configuration of the Network Bandwidth Management feature. If
Network Bandwidth Management encounters insufficient bandwidth for an
interzone call, the Alternative Call Routing for NBWM feature attempts to
re-route the call through the PSTN or TIE/MCDN route, if Alternative Call
Routing is configured for the originating zone.
Configure the Voice Gateway bandwidth zone and the IP Phone bandwidth
zone with the same number on each Call Server.
For alternately routed calls that originate at the Branch Office, the network
administrator must decide whether to program the main office to use
conventional PSTN or TIE/MCDN routes that physically terminate at the
Branch Office or to use conventional trunks at the main office. Outpulsed
digits on the PSTN trunks must be in the format required by the Central
Office serving the chosen system. For example, if the two systems are
served by the same Central Office, PSTN calls can use the trunks at the
main office. However, if the two systems are located at a great distance
from each other, it may make sense to program the main office to use trunks
at the Branch Office for alternately routed calls.
If there is a location with multiple NXX codes for DID users, it is possible
to translate and outpulse calls properly as long as each NXX has a unique
DN range. Non-DID users can be reached through the attendant console,
by deleting the ALTPrefix and the DN dialed and inserting the digits in the
Listed Directory Number (LDN).
When calls are rerouted to use the PSTN instead of the station-to-station
IP network, there may be a loss of feature functionality normally available
for station-to-station calls. Features that are not available over the PSTN
are not available to the user.
Nortel Communication Server 1000
Branch Office Installation and Commissioning
NN43001-314 01.02 Standard
Release 5.0 20 June 2007
Copyright © 2007, Nortel Networks
.