Page 56 of 258 Bandwidth Management
Table 4
“Best Bandwidth” algorithm — codec type
| G.711 A law | G.711 | G.729 A | G. 729 AB | G. 723.1 |
|
|
|
|
|
|
G.711 | G.711 | G.711 | G.729 A | G. 729 AB | G. 723.1 |
|
|
|
|
|
|
G.711 | G.711 | G.711 | G.729 A | G. 729 AB | G. 723.1 |
|
|
|
|
|
|
G.729 A | G.729 A | G.729 A | G.729 A | G. 729 AB | G.729 A |
|
|
|
|
|
|
G. 729 AB | G. 729 AB | G. 729 AB | G. 729 AB | G. 729 AB | G. 729 AB |
|
|
|
|
|
|
G. 723.1 | G. 723.1 | G. 723.1 | G.729 A | G. 729 AB | G. 723.1 |
|
|
|
|
|
|
Interoperability between CS 1000 and SRG
The SRG is designed to interoperate with CS 1000 in a manner similar to MG 1000B but with a limitation with respect to codec selection policy. Calls between branch IP Phones and branch analog phones are based on the interzone policy rather than the intrazone policy defined in the CS 1000 main office. The zone table is updated based on the intrazone policy.
The net result of this limitation is that calls between branch IP Phone users and the branch PSTN or between the IP Phones and branch analog phones will always use a Best Bandwidth codec. However, the calls will be accounted for as Best Quality. This may impact the perception of call quality in this scenario, but it will not result in early call blocking. There is no impact to codec selection or bandwidth usage tracking for calls that require WAN bandwidth.
Configuring Bandwidth Management parameters
The following sections describe how to configure Bandwidth Management in a CS 1000 network. Nortel recommends that you read the Bandwidth Management section in Converging the Data Network with VoIP
