440 3Com® VCX V7111 VoIP Gateway User GuideAdding a Reorder Tone to the CPT FileThe following procedure describes how to add a Reorder tone that a PBX generates toindicate a disconnected call, to the CPT file.To add a Reorder tone to the CPT file, take these 11 steps:1 Make a call (using G.711) between the MP FXO, which is connected to the PBX, and aremote entity in the IP network.2 Capture the call using a "network sniffer" such as Wireshark.3 Disconnect the call from the PBX side, and then wait approximately 30 seconds beforestopping the Wireshark recording.4 In the network trace, locate the RTP stream sent from the FXO.5 Save the RTP payload on your PC as a *.pcm file by clicking Save Payload (Statistics)menu > RTP > Stream Analysis. (Note: ensure that you select the ‘forward’ option.)6 Open the *.pcm file in a voice recording utility such as CoolEdit.7 Locate the tone that the PBX played to indicate the disconnected call (if such a toneexists).8 Locate the attributes of the tone -- its frequency and interval (on / off time).9 In the Call Progress Tones file, add a new Reorder Tone with the attributes you found inthe previous step. Ensure that you update the numbers of the successive tones and thetotal number of tones in the beginning of the file.10 Create a Call Progress Tones.dat file using the DConvert Utility (see TrunkPackDownloadable Conversion Utility).11 Load the new file to the gateway, and then reset the gateway.
