[Asterisk-Users] Musiconhold interrupted sound

[Jamie Neil]

Quoting Michael Ulitskiy [mulitskiy at acedsl.com]:
> Hi again,
>
> Am I really the only one who's having this problem?
> Music on hold playing like this is very annoying and
> practically unusable.

Hi Michael,

No - you're not alone :)

I've had similar problems with SIP since I started experimenting with *
nearly a year ago. I still get it on my current cvs system every now and
then although it's not nearly as bad as it used to be. Sometimes the moh
will start off ok but then seem to lose sync and break up after a minute or
so, other times (like now ;) ) it seems perfect apart from the odd little
glitch. I just put it down to the fact that I have no real zap devices
(chan_capi & sip only) and so rely on ztdummy for timing. I was hoping that
when I got around to putting an digium fxs card in, the problem would
disappear completely!

I may be wrong, but I seem to remember that Michael Manousos' oh323 channel
driver was _not_ affected by this problem (this was before Jeremy McNamara's
h323 channel was usable), maybe because it doesn't use the same * libraries
as other voip channels, however it's been a while since I played with h323
so I don't know if that's still the case.

Jamie Neil
Versado I.T. Services Ltd.

> One more detail. The sound interruption happens only
> when 2 endpoints are actually connected and one of them
> put the other on hold. If I set a special extension with
> SetMusicOnHold application it seems to play just fine.
> Please help!
> Thank you.
>
> Michael
>
> On Friday 01 August 2003 04:58 pm, Michael Ulitskiy wrote:
> > 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
> >