How to encode WAV to play with SIPp

Question

By looking into another SIPp related question I learned that it is now possible to play WAV files using the rtp_stream action.

I\'ve tried several diffe

Answer 1

I was looking for different WAV file encodings and found a lot of them on Wikipedia.

I've found one file (8,000 Hz µ-Law) that works correctly with the rtp_stream="8kulaw.wav,-1,0" exec parameter.

This is the file information:

ubuntu@mylinux:~/$ file 8kulaw.wav
8kulaw.wav: RIFF (little-endian) data, WAVE audio, ITU G.711 mu-law, mono 8000 Hz

I've tried to encode this file to the exact same configuration using this Sox command but it did NOT worked:

sox -r 8000 -e u-law sorry_dave.wav sorry_dave4.wav