Audio Stutters when Streaming Tone to X-Lite/SJPhone

One mailing list member reported audio "stutters" when streaming a .WAV file containing tone to X-Lite and SJPhone. But this didn't happen when the receiving side is another pjsua.

Solution:

Don't send tone file to these user agents, as it's suspected that they try to do something with the in-band tone. Use .WAV file containing usual speech and it should be okay.