[Asterisk-Users] BAD echo problems with Sangoma and Telstra

[canuck15]

> > -----Original Message-----
> > From: Julien Goodwin [mailto:asterisk-lists at studio442.com.au]
> > Sent: Wednesday, September 28, 2005 6:28 AM
> > To: asterisk-users at lists.digium.com
> > Subject: Re: [Asterisk-Users] BAD echo problems with Sangoma and 
> > Telstra
> > 
> > On Wed, Sep 28, 2005 at 12:09:46PM +1200, Andrew Thrift 
> arranged a set 
> > of bits into the following:
> > > Hello,
> > > 
> > > We have an Asterisk 1.0.9 machine with a Sangoma A101 card
> > fitted, it
> > > is connected to a Telstra OnRamp E1 in Melbourne, Australia.  The 
> > > problem we are experiencing is extreme echo and clicking noises.
> > > 
> > > These are only audible to the calling party, e.g. the
> > person calling
> > > in from the PSTN to Asterisk via the E1, the person on the
> > SIP handset
> > > cannot hear any echo or clicking, only the PSTN side can.
> > Hmm, have a few BRI's but no E1's on asterisk (just on an old
> > samsung) but we've never had echo troubles, even without an 
> echo can. 
> > (Yes in melbourne, both CBD and surrounds)
> > 
> > The clicking sounds like a clock issue, or not enough cpu. 
> > What are your phones, maybe it's acoustic echo.
> > 
> > Are you seeing any odd log messages (with debug=10 and verbose=10)?
> > 
 
Try listening to some of the sample mp3's at this link and 
see if one of them matches what your hearing.  If you get a 
match then the explanations should point you in the right direction.
http://www.voiptroubleshooter.com/diagnosis/usersymptoms.html