[Asterisk-Users] No Echo But Broken Audio

[Scott Wolfe]

Thanks.
    In fact SIP <->SIP is fine as well as SIP<->FXS. Although I am not sure
what Codec Polycom is using I will try and force the Polycom to use AWAL.
Thanks for the advice. My machine is a Dual P4 as well with 1gig of memory.
-Scott

----- Original Message ----- 
From: "Adam Goryachev" <mailinglists at websitemanagers.com.au>
To: "Scott Wolfe" <scottwolfe at orbus.net>; "Asterisk Users Mailing List -
Non-Commercial Discussion" <asterisk-users at lists.digium.com>
Sent: Tuesday, March 22, 2005 7:10 PM
Subject: Re: [Asterisk-Users] No Echo But Broken Audio


> On Tue, 2005-03-22 at 17:58 -0800, Scott Wolfe wrote:
> > Hi there,
> >   I have suceseffuly installed Asterisk with a TDM22B and two sip phones
> > (Polycom300 and Xlite). My provider is Broadvoice and I am having a heck
of
> > a time with the audio. All of my calls are broken up and sometimes
really
> > tough to hear.
> >
> > My CLI> 'sip show peers'  has me usually at OK(128ms) connection with
> > Broadvoice.
> >
> > I do have the same issue with my Analog phone plugged into my TDM22B.
> >
> > Any suggestions on where to look to debug this would be great.
> >
> > This is an install from CVS-HEAD on 3-21-2005. I'll post my sip.conf
just in
> > cast anyone sees anything odd in it.
>
> 1) Try with CVS-STABLE
> 2) Try calling from the sip phone to asterisk itself (ie, no internet
> path or PSTN)
> 3) Try calling from an FXS port, and to an FXO port, and between FXS/FXO
> and FXO/SIP and FXS/SIP and even SIP/SIP
> 4) What codecs are you using, I found that forcing the polycoms to use
> ALAW, and my PRI was ALAW also, then it improved the audio quality.
> Though this was with a very small number of calls, on a pretty beefy
> Intel PIV based server.... I never realised ALAW<->ULAW would make so
> much of a difference.
>
> If none of that helps, then let us all know the outcome of each test,
> and someone else will likely offer some additional advice...
>
> Regards,
> Adam
>
> -- 
>  -- 
> Adam Goryachev
> Website Managers
> Ph:  +61 2 8304 0000                        adam at websitemanagers.com.au
> Fax: +61 2 9345 4396                        www.websitemanagers.com.au
>