[asterisk-users] Queue announcements and MOH blanking out on calls from PSTN over IAX2

[Raj Mathur ( राज माथुर )]

On Saturday 29 Oct 2011, Raj Mathur (राज माथुर) wrote:
> [snip]
> Callers coming in from the PSTN (through the Dial server, over IAX2)
> can also talk normally after an agent has picked up the call. 
> However, callers from the PSTN get the announcement and/or MOH
> blanked out after a random period of time, typically 5-10 seconds. 
> This often happens in the middle of the queue position or thank-you
> announcement.
> 
> After the blanking out, the call is still alive, queue functions are
> working, and if an agent picks up the calls s/he can talk normally to
> the caller.  However, blanking out of the MOH/announcement makes the
> caller think that the call has been dropped, and they hang up before
> an agent answers.
> 
> Debug logs show that Asterisk is playing the MOH and announcement
> files continuously even though the caller cannot hear them.
> 
> Unable to figure out why the blanking happens ONLY on incoming calls
> from the PSTN.  Any help appreciated.

Further simplified the issue to an extension that just does:

... Answer()
... MusicOnHold(default)

When called from the PSTN, the musiconhold blanks out after a few 
seconds, while it plays fine when the extension is called locally.

Regards,

-- Raj
-- 
Raj Mathur                raju at kandalaya.org      http://kandalaya.org/
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