[Asterisk-Users] Musiconhold interrupted sound

[Michael Ulitskiy]

Hi,

I don't seem to be able to get music on hold to play normally.
The sound gets often interrupted with a few seconds of silence
then starts playing again. I'm using mpg123-0.59r and tried
mp3 files with different sample rates with no luck. If that matters, 
endpoints are SIP ata186, SIP Cisco 7960 and H.323 (over chan_h323)
Quintum Tenor.
Sometimes it may play fine for a few minutes then getting worse 
again. I've noticed that the following messages look directly
connected to sound interruptions:
on asterisk console:
NOTICE[245776]: File rtp.c, Line 239 (process_rfc3389): RFC3389 support incomplete.  Turn off on client if possible
in debug log:
Aug  1 16:43:58 DEBUG[32771]: File res_musiconhold.c, Line 292 (monmp3thread): Only wrote -1 of 640 bytes to pipe
The music stops playing simultenuously with these messages appearing.
Also I've tried to install ztdummy and zaprtc drivers (no zaptel hardware installed). 
None of them helped.
Asterisk version is CVS-07/30/03-18:53:16
If anybody has any idea on how to fix it or what can be done to further 
troubleshoot it, I'd appreciate hearing from you.
Thanks.

Michael