asterisk users - Nov 2005 - Moments of silence

We have also experienced momentary periods of silence in the middle of 
phone calls.

I'm wondering if this could be related to the IAX peers becoming 
unreachable?

Has anyone experienced moments of silence during a call, and do you know 
what the causes might be?

> We have also experienced momentary periods of silence in the middle of 
> phone calls.
> 
> I'm wondering if this could be related to the IAX peers becoming 
> unreachable?
> 
> Has anyone experienced moments of silence during a call, and do you know 
> what the causes might be?
My wife running out of words...., momentarily? ;-)

Actually, could be lots of things. If it happens a lot, see what the
'iax2 show netstats' indicates (if anything).

We run SIP phones (polycom 501s) to * and a tdm40b for PSTN out, mostly 
SIP <-> PSTN calls but a few SIP <-> SIP calls.  We haven't
implemented
any vlans or QoS so from time to time the network traffic and latency 
get the better of our communication.  Usually this manifests as a slight 
crackle, but when really bad, we get spaces of silence like you 
describe.  The user connected from the PSTN channel can hear us, but we 
on the SIP phones can't hear the PSTN channel.  sometimes for a second, 
sometimes for 5 or so.

Have you eradicated any network latency issues you might have?  Seems 
like this could be the source of the silences for us.   Also, it could 
be our unmanaged switch flipping out I suppose.  It's always been pretty 
low traffic on our network.

Moj

Adam Moffett wrote:
> We have also experienced momentary periods of silence in the middle of 
> phone calls.
> 
> I'm wondering if this could be related to the IAX peers becoming 
> unreachable?
> 
> Has anyone experienced moments of silence during a call, and do you know 
> what the causes might be?
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