[Asterisk-Users] Audio cuts out

[Gary Richardson]

We're not using any zaptel hardware though. I didn't think the echo
cancellers would be doing anything? We're digital and sip from end to end.
Do I need to disable echo cancellation in some way?
Thanks.

On 6/12/06, Andrei (MPI) <asterisk at markovprocesses.com> wrote:
>
> Gary,
>
> I would check echo cancelling parameters first. I've seen this to happen
> with one of the zaptel echo cancellers. Try to change the default echo
> algorithm in zconfig.h,  and recompile and install new zaptel. Also
> zapata.conf echo parameters may need to be changed either way.
>
> Andrei
>
> Gary Richardson wrote:
> > Hey All,
> >
> > I've been experiencing a problem for a bit. During a call to the PSTN,
> > audio will cut out for 2-5 seconds. It's completely random and may or
> > may not happen during a call.
> >
> > Our setup is 79XX phones -> asterisk -> 2811 router -> PRI to the
> > PSTN. Everything is talking SIP. The asterisk box is a dual core
> > system. /proc/interrupts looks like:
> >
> >  cat /proc/interrupts
> >            CPU0       CPU1
> >   0:  733669449  732813122    IO-APIC-edge  timer
> >   8:          1          0    IO-APIC-edge  rtc
> >   9:          0          0   IO-APIC-level  acpi
> >  14:    6598410    6589174    IO-APIC-edge  ide0
> > 169:          0          0   IO-APIC-level  uhci_hcd
> > 185:          0          0   IO-APIC-level  ehci_hcd, uhci_hcd
> > 193:          0          0   IO-APIC-level  uhci_hcd
> > 201:          0          0   IO-APIC-level  uhci_hcd
> > 209:   11404158   10762030   IO-APIC-level  3w-9xxx
> > 225:  100440701        136         PCI-MSI  eth0
> > 233:         14   10512166         PCI-MSI  eth1
> > NMI:          0          0
> > LOC: 1466464719 1466464718
> > ERR:          0
> > MIS:          0
> >
> > Can-Reinvite is enabled, but I do have it configured to allow call
> > recording on outbound calls, so I think the audio streams all go
> > through asterisk. There are no G.729 licenses involved and everything
> > should be talking G.711.
> >
> > Oh, and this is an 1.2.7.1 <http://1.2.7.1> install. ztdummy is loaded.
> >
> > Does anyone have any insite into this problem?
> >
> > Thanks.
> > ------------------------------------------------------------------------
> >
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