Page 114 of 254 Bandwidth ManagementNN43001-308 Standard 01.02 May 2007Interoperability between CS 1000 and SRGThe SRG is designed to interoperate with CS 1000 in a manner similar toMG 1000B but with a limitation with respect to codec selection policy. Callsbetween branch IP Phones and branch analog phones are based on theinterzone policy rather than the intrazone policy defined in the CS 1000 mainoffice. The zone table is updated based on the intrazone policy.The net result of this limitation is that calls between branch IP Phone usersand the branch PSTN or between the IP Phones and branch analog phoneswill always use a Best Bandwidth codec. However, the calls will beaccounted for as Best Quality. This may impact the perception of call qualityin this scenario, but it will not result in early call blocking. There is no impactto codec selection or bandwidth usage tracking for calls that require WANbandwidth.Configuring Bandwidth Management parametersThe following sections describe how to configure Bandwidth Management ina CS 1000 network. Nortel recommends that you read the BandwidthManagement section in Converging the Data Network with VoIPFundamentals (NN43001-260) before using the following configurationinformation.Table 6“Best Bandwidth” algorithm — codec typeG.711 A law G.711 mu-law G.729 A G. 729 AB G. 723.1G.711 A-law G.711 A-law G.711 mu-law G.729 A G. 729 AB G. 723.1G.711 mu-law G.711 mu-law G.711 mu-law G.729 A G. 729 AB G. 723.1G.729 A G.729 A G.729 A G.729 A G. 729 AB G.729 AG. 729 AB G. 729 AB G. 729 AB G. 729 AB G. 729 AB G. 729 ABG. 723.1 G. 723.1 G. 723.1 G.729 A G. 729 AB G. 723.1
