Sniffer manual

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This manual describes installation and configuration of the VoIPmonitor C++ sniffer sensor. If you are looking for WEB GUI manual, go to WEB GUI Manual.

VoIPmonitor sniffer implements SIP, Cisco SKINNY, RTP, RTCP and UDPTL VoIP protocols analyzing quality of calls - packet delay variation and packet loss according to ITU-T G.107 E-model which predicts quality on MOS scale. It is written in C++ and designed to handle thousands of simultaneous calls. Each call can be optionally saved to pcap file format with either only Signalization SIP/SKINNY or including also RTP, RTCP and UDPTL protocols. VoIPmonitor can also decode sound 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.729a/G.723/G.722/iLBC/Speex/GSM/Isac/Silk/Opus/Amr/Siren. VoIPmonitor uses jitterbuffer simulator to keep both direction of call synchronized.


Data Cleaning

Sniffing modes

Sniffer installation

Sniffer configuration

Silence detection

Sniffer upgrade

Sniffer troubleshooting

Database structure

Redundant database