[asterisk-users] random one way audio and noise between SIP phoneson same LAN

[Scott Scecina]

I'm having the same "random" problem.

I have "canreinvite=no" on all extensions.  I have "qualify => yes" on all
non-NAT extensions. I do have several NAT extensions, but I've not had
reports of problems from those.  95% of my extensions (all polycom 501/601)
are on a brand-new network comprised of 2 48-port Cisco 3560 1GB switches.

In all cases, the called party cannot hear the calling party.  The calling
party has the "still ringing" icon on their phone, but can hear the called
party talking.  I've got call monitoring turned on, and asterisk is recording
both sides of the conversation.   

The problem occurs on SIP->SIP and Zap->SIP calls. 

I've tried enabling sip debug on a particular extension that seemed to be
experiencing the problem more than others.  However the problem did not occur
when the debugging was on.

Sip debug generates so much noise I've been hesitant to turn it on
system-wide.  Is there a way I can turn on sip debug and have all that
logging go to a specific file (and not in the asterisk console)?

Also, are there any other configuration/logging tricks I can try?

Thank you,

Scott Scecina


-----Original Message-----
From: asterisk-users-bounces at lists.digium.com
[mailto:asterisk-users-bounces at lists.digium.com] On Behalf Of Klaus Darilion
Sent: Wednesday, October 18, 2006 8:48 AM
To: Asterisk Users Mailing List - Non-Commercial Discussion
Subject: Re: [asterisk-users] random one way audio and noise between SIP
phoneson same LAN

Do you use canreinvite (sip.conf)?

Change the setting (setting canreinvite=yes may cause nat problems) nad 
verify if the problem still appears.

Using htis setting you can find out if the Audio problem occurs only 
when media is relayed via Asterisk (->the problem is caused by Asterisk) 
or in all cases (the problem is not caused by Asterisk)

regards
klaus

Giorgio Incantalupo wrote:
> Hi,
> sometimes I have one way calls and noise between sip phones connected to 
> the same LAN so no nat/firewall is involved. I tried with different sip 
> phone models soft phones and the result is the same. I searched inside 
> every log file but found nothing. I made different PBX with different 
> hardware but the result is always the same.
> 
> Is there anybody experiencing this terrible problem?
> Considering to monitor a remote PBX via ssh, which  text-only 
> application  could  I use?
> 
> TIA
> 
> Giorgio Incantalupo
> 
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