We are troubleshooting an IP PBX that
is having echo issues with a PSTN Gateway. We're using wireshark to capture the
packets and have exported the G.711 audio to a wav file, then we're using
Adobe Audition to review the wav files. However we have questions
related to the G.711 levels and the wav conversion as we do not
have a method of inserting a known G.711 signal for
calibration:
When exporting is performed is the G.711
Mu-Law digital full scale (DFS) equal to the wav file DFS we see with Adobe
Audition?
If so, then G.711 0 dBm0 would be 3.14 dB
below DFS, but is this -3.14 dB peak or the rms value (we are thinking peak
since it's related to DFS)?
Hopefully we are asking the correct
questions here. If anyone can assist with this issue it would be greatly
appreciated.
Don