Bandwidth Management Page 57 of 258
Zones
Bandwidth Management Zones are configured for each endpoint on a Call Server. The Network Bandwidth Zone number determines if a call is an intrazone call or an interzone call. Once that is determined, the proper codec and bandwidth limit is applied to the call.
All of the endpoints on one Call Server are configured with Zone number to identify all of the endpoints as being in a unique geographic location in the network. In addition, Virtual Trunks are configured with a Zone number that is different from the endpoint Zone numbers in the Call Server.
Codec selection occurs as described in “Codec selection” on page 53.
Configuration rules
There are four configuration rules for Bandwidth Management, as follows:
1Each Call Server in the network must be configured with a unique VPNI, with the only exception noted in point 2, next.
2Branch office (MG 1000B and SRG) Call Servers must be configured with the same VPNI as that of the main office Call Server with which they register.
3Nortel recommends that all the endpoints on a Call Server (IP Phones and Voice Gateway Media Cards) be configured with the same Zone number.
4Virtual Trunks must be configured with a different Zone number than the endpoints.
Network Planning
Before configuring Bandwidth Management in a CS1000 network, follow these steps:
1Choose unique VPNIs for all Call Servers in the network.
2Choose unique Bandwidth Zone numbers for all Call Servers in the network. These are used when configuring the endpoints (telephones and gateways) on the Call Server.
Main Office Configuration for Survivable Remote Gateway 50 Configuration Guide
