[asterisk-users] SIP & Echo

[Jorge Mendoza]

Try  "canreinvite=yes" in order to confirm that CPU is not the problem.

Jorge Mendoza

Asterisk wrote:
>
> I tried with the ping ... all of the phones respond in ca. 0.3ms, so 
> network seems to be OK. More than 90% of CPU on * box is idle even in 
> peak times, so this shouldn't cause echoes either, right? Hmmm, so 
> handset could be an issue, but did anyone ever experience any handset 
> problems with Polycom IP SoundPoint 430 :-) ?
>
>  
>
> I will check the headsets and any possibilities of acoustical echo. 
> Besides that, if we rule out the network, and the CPU on the * box, is 
> there anything else that could be causing echoes on internal SIP calls?
>
>  
>
> ------------------------------------------------------------------------
>
> *From:* asterisk-users-bounces at lists.digium.com 
> [mailto:asterisk-users-bounces at lists.digium.com] *On Behalf Of *David 
> Gomillion
> *Sent:* Tuesday, May 22, 2007 3:22 PM
> *To:* Asterisk Users Mailing List - Non-Commercial Discussion
> *Subject:* Re: [asterisk-users] SIP & Echo
>
>  
>
> We experience echo too from time to time. It's usually 
> headset-related, but not always. I ran a persistent ping on one of the 
> phones, and we diagnosed a wiring problem with it. Other phones needed 
> a new handset. The problem is that these problems need to be fixed on 
> the phone NOT hearing echo.
>
> On 5/22/07, *Asterisk* <asterisk at abraxas.si 
> <mailto:asterisk at abraxas.si>> wrote:
>
> How could I check if bandwith or/and latency is causing it?
>
> If I do SIP show peers it says OK (13 ms) for all peers. I guess there 
> is a way to gather more detailed info on SIP calls and latency?
>
> * box is connected to the 1Gb switch with 1Gb connection, and clients 
> have 100Gb/s speed. CPU is 90% free in peak time, and there are 34 SIP 
> hardphones connected to the * box.
>
> Thanks, Alex
>
> -----Original Message-----
> From: asterisk-users-bounces at lists.digium.com 
> <mailto:asterisk-users-bounces at lists.digium.com> [mailto: 
> asterisk-users-bounces at lists.digium.com 
> <mailto:asterisk-users-bounces at lists.digium.com>] On Behalf Of 
> Alexandre VERNIOL
> Sent: Tuesday, May 22, 2007 2:18 PM
> To: Asterisk Users Mailing List - Non-Commercial Discussion
> Subject: Re: [asterisk-users] SIP & Echo
>
> Hi,
>
> Could be bandwith or/and latency ... Many causes...
>
>
> Alex
>
> Asterisk a écrit :
> > Hello all,
> >
> > One of our clients reported that they are experiencing echo in SIP calls
> > (even on internal ones). What do you think could be causing echo in
> > internal SIP calls?
> >
> > We're using Polycom telephones, do you think they could be causing it?
> >
> > Thanks,
> > Alex
> >
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