The version of wildpackets omnipeek with VoIP analysis function is powerful. It can directly save g.729, g.711 and other audio streams into WAV Files, greatly improving the analysis efficiency.
G.729
Method 1:
1: Wireshark: capture the traffic using etherealand dumping the RTP data (Statistics-> RTP-> show all streams-> saveas ).
2: Use rtpdump (http://www.cs.columbia.edu/IRT/software/rtptools/) to dump only the audio payload ("rtpdump-F payload-F in. RTP-O out. RTP ")
3: Use voiceage decoder. In Windows cmd, (va_g729_decoder.exe out. RTP out. PCM ).
4: play out. PCM useing Cool Edit Pro 2.0 or goldwave 16bit signed/unsigned 8000Hz.
Method 2: 1: Wireshark: capture the traffic using etherealand dumping the RTP data (Statistics-> RTP-> show all streams-> analyze-> -- save payload (select. raw and forward )).
2: Use voiceage decoder. in Windows cmd, (va_g729_decoder.exe out. raw out. PCM ).
3: play out. PCM useing Cool Edit Pro 2.0 or goldwave 16bit signed/unsigned 8000Hz.