What is VoIPmonitor

VoIPmonitor is open source live network packet sniffer for linux or posix unix which analyzes SIP and RTP protocol. It can run as daemon or analyzes already captured pcap files. For each detected VoIP call voipmonitor calculates statistics about loss, burstiness, latency and predicts MOS (Meaning Opinion Score) according to ITU-T G.107 E-model. These statistics are saved to MySQL database and each call is saved as pcap dump. Web PHP application (it is not part of open source sniffer) filters data from database and graphs latency and loss distribution. Voipmonitor also detects improperly terminated calls when BYE or OK was not seen. To accuratly transform latency to loss packets, voipmonitor simulates fixed and adaptive jitterbuffer.

Key features

  • Fast C++ SIP/RTP packet analyzer
  • Predicts MOS-LQE score according to ITU-T G.107 E-model
  • Detailed delay/loss statistics stored to MySQL
  • Each call is saved as standalone pcap file

Web GUI

Web GUI is commercial application and is not free. This application filters calls based on various criteria. Part of GUI is grapher which shows delay and loss distribution over the whole call. See online demo: http://voipmonitor.org/demo/. More information on commercial support page.

Download

VoIPmonitor 1.3.tar.gz (bug fix and some new features)

- (new in 1.3 - 15.6.2010) fix random crashes which affects all versions
- hash search function for classifying RTP packets to its Call structure. This will speedup voipmonitor for high call volumes.
- fix 100% CPU whan -k was given
- log big timestamp jump only if verbose is > 4
- log MySQL query error to syslog
- handle MySQL error "2006 - MySQL server has gone away" as reconnecting to database
- fix crashes when dereferencing NULL packet. Sometimes it happens that pcap_next returns NULL pointer. Thanks Carlos Talbot!
- save caller ID with NAME field from SIP INVITE and store it to cdr.callername MySQL column (thanks Carlos Talbot)

VoIPmonitor 1.3 Debian Lenny

Howto RUN

Capture all VoIP traffic on eth0, save pcap files to /var/spool/voipmonitor and store statistics to remote MySQL server:

 voipmonitor -i eth0 -h remote.mysql.ip

Analyze all SIP VoIP calls in pcap file and store statistics to local MySQL server: 

 voipmonitor -r mypcapfile

Howto compile

What is required

  • C and C++ compiler (gcc,g++)
  • libpcap-dev package (almost in every linux distribution)
  • MySQL++ library from http://tangentsoft.net/mysql++/

    • This howto is for Debian Lenny and Etch (for Debian sarge, change libmysqlclient15-dev to libmysqlclient14-dev) 

    apt-get install libpcap-dev libmysqlclient15-dev 
     #(on redhat/CentOS it is mysql development package)
wget http://tangentsoft.net/mysql++/releases/mysql++-3.0.9.tar.gz
tar xzf mysql++-3.0.9.tar.gz
cd mysql++-3.0.9
./configure
make install
ldconfig
cd ../voipmonitor
make
make install

    
mysqladmin create voipmonitor
cat cdrtable.sql | mysql voipmonitor
voipmonitor -i eth0 -SRG

    Howto contribute and bug reports

    commercial support