V6100 and V7122 User Guide 87Protocol ManagementUse this menu to configure the gateway’s SIP parameters and tables.Protocol Definition ParametersUse this submenu to configure the following gateway’s specific SIP protocol parameters: General Parameters Proxy & Registration Parameters Coders (see Coders) DTMF & Dialing ParametersCodersFrom the Coders screen you can configure the first to fifth preferred coders (and theirattributes) for the gateway. The first coder is the highest priority coder and is used by thegateway whenever possible. If the far end gateway cannot use the coder assigned as thefirst coder, the gateway attempts to use the next coder and so forth.To configure the gateway’s coders:1 Open the ‘Coders’ screen (Protocol Management menu > Protocol Definitionsubmenu > Coders option); the ‘Coders’ screen is displayed.Figure 35 Coders Screen2 From the Coder Name drop-down list, select the coder you want to use. For the full list ofavailable coders and their corresponding attributes, see the ini file parameter‘CoderName’ (described in Table 48).Each coder can appear only once.3 From the Packetization Time drop-down list, select the packetization time (in msec) forthe coder you selected. The packetization time determines how many coder payloadsare combined into a single RTP packet.
