VoIPmonitor is open source network packet sniffer with commercial frontend for SIP RTP and RTCP VoIP protocols running on linux. VoIPmonitor is designed to analyze quality of VoIP call based on network parameters - delay variation and packet loss according to ITU-T G.107 E-model which predicts quality on MOS scale. Calls with all relevant statistics are saved to MySQL or ODBC database. Optionally each call can be saved to pcap file with either only SIP protocol or SIP/RTP/RTCP/T.38/udptl protocols. VoIPmonitor can also decode speech and play it over the commercial WEB GUI or save it to disk as WAV. Supported codecs are G.711 alaw/ulaw and commercial plugins supports G.722 G.729a G.723 iLBC Speex GSM Silk iSAC. VoIPmonitor is also able to convert T.38 FAX to PDF.
Who is VoIPmonitor for
monitor and troubleshoot quality of SIP VoIP calls
archive all calls including SIP, RTP, T.38 FAX (PDF) in CDR database
decode and play calls directly from the GUI or show T.38 FAX as PDF
monitor call centers
From customer: "I just wanted to write to say that VoIPmonitor has been a HUGE help to us in managing our VOIP service in the face of South Africa's poor quality Internet environment. Aggregating the summary data provides fantastic information showing quality trends for individual customers, classes of customers and overall. The "clean" PCAP files are a huge help for debugging. What a pleasure to be able to go back in time and pull out a call from days ago and look at it packet by packet. So thanks so much for this very useful program!"
Our customers are ITSP companies using VoIPmonitor to proactively troubleshooting quality of VoIP infrastructure, call centers using VoIPmonitor as call recording solution and large to small companies using it for archiving and monitoring calls.