[Asterisk-Users] MusicOnHold pulsing sound

[Jens-E. Hansen]

Hi,

i use asterisk-ng with i4l devices. It works fine except the Music on
hold application. Calling the PBX on a ttyI device the sound pulse with
a frequency of approx 500 msec. Calling the PBX via IAX the sound is
better but not so good as the gsm files.

When asterisk boots i get: WARNING[1024]: File res_musiconhold.c, Line
466 (moh_register): unable to open pseudo channel for timing...  Sound
may be choppy.

Asterisk tries to open /dev/zap/pseudo but i have no zap devices so it
has to fail.

Stopping asterisk i get: Ouch ... error while writing audio data: Broken
pipe.

I use a debian system on a P166MMX and a 32kbps, 11kHz mp3 file.
Even a faster hardware (AMD500) and a fresh compiled mpg123 makes no
difference.

Maybe someone on the list can give me a hint.

Thank you
Jens