172 3Com® VCX V7111 VoIP Gateway User Guideini File Parameter Name Valid Range and DescriptionRTPNoOpInterval This parameter is now obsolete. Please use the parameterNoOpInterval.RTPNoOpPayloadType Determines the payload type of No-Op packets.The valid range is 96 to 127. The default value is 120.EnableDetectRemoteMACChange Changes the RTP packets according to the MAC address of receivedRTP packets and according to Gratuitous Address Resolution Protocol(GARP) messages.Valid options include:[0] = nothing is changed.[1] = If the gateway receives RTP packets with a different source MACaddress (than the MAC address of the transmitted RTP packets), thenit sends RTP packets to this MAC address and removes this IP entryfrom the gateway's ARP cache table.[2] = The gateway uses the received GARP packets to change theMAC address of the transmitted RTP packets.[3] = both 1 and 2 options above are used (default).Configuring the Media SettingsFrom the Media Settings page you can define: Voice Settings (see Configuring the Voice Settings). Fax / Modem / CID Settings (see Configuring the Fax / Modem / CID Settings). RTP/RTCP Settings (see Configuring the RTP / RTCP Settings). Hook-Flash Settings (see Configuring the Hook-Flash Settings). General Media Settings (see Configuring the General Media Settings).These parameters are applied to all V7111 channels.• Several Channels Settings parameters can be configured per call using profiles(see Configuring the Profile Definitions).• Those parameters contained within square brackets are the names used toconfigure the parameters using the ini file.• Channel parameters are changeable on-the-fly. Changes take effect from nextcall.Configuring the Voice SettingsTo configure the Voice Settings parameters:1 Open the Voice Settings screen (Advanced Configuration menu > Media Settings >Voice Settings option); the Voice Settings screen is displayed.
