asterisk users - Jan 2012 - Noise in caller handset when dialing out (with dahdi 2.6.0)

Hi,

On a brand new system, I met an issue I've never met before.

My setup is :
debian 6.0.3
asterisk 1.8.8.1
dahdi 2.6.0
libpri 1.4.12
freepbx 2.9.0.4
TE420FB (with hardware EC)

This is the very first time I'm using Freepbx and the whole
configuration was first generated by a "make samples" command.

When a SIP hardphone dials another SIP hardphone, everything is OK.
When the same SIP hardphone dials an external number, there is a quite
loud noise that can be heard within the handset from the moment the
digit sequence have been sent to the  moment any party hangs up. The
other party doesn't hear this noise.
(It's not easy for me to describe this noise)


I don't have any idea of where to look at.
What would you suggest or recommend ?


Regards

> On a brand new system, I met an issue I've never met before.
> 
> My setup is :
> debian 6.0.3
> asterisk 1.8.8.1
> dahdi 2.6.0
> libpri 1.4.12
> freepbx 2.9.0.4
> TE420FB (with hardware EC)
> 
> This is the very first time I'm using Freepbx and the whole
> configuration was first generated by a "make samples" command.
> 
> When a SIP hardphone dials another SIP hardphone, everything is OK.
> When the same SIP hardphone dials an external number, there is a
> quite
> loud noise that can be heard within the handset from the moment the
> digit sequence have been sent to the  moment any party hangs up. The
> other party doesn't hear this noise.
> (It's not easy for me to describe this noise)
> 
> 
> I don't have any idea of where to look at.
> What would you suggest or recommend ?
At a guess this sounds like a possible mismatch between A-law and
mu-law companding.  When this happens, you hear something like static
only when someone is speaking.

Richard

On Mon, Jan 09, 2012 at 07:52:02PM +0100, Olivier wrote:
> Hi,
> 
> On a brand new system, I met an issue I've never met before.
> 
> My setup is :
> debian 6.0.3
> asterisk 1.8.8.1
> dahdi 2.6.0
> libpri 1.4.12
> freepbx 2.9.0.4
> TE420FB (with hardware EC)
> 
> This is the very first time I'm using Freepbx and the whole
> configuration was first generated by a "make samples" command.
> 
> When a SIP hardphone dials another SIP hardphone, everything is OK.
> When the same SIP hardphone dials an external number, there is a quite
> loud noise that can be heard within the handset from the moment the
> digit sequence have been sent to the  moment any party hangs up. The
> other party doesn't hear this noise.
> (It's not easy for me to describe this noise)
Hi Olivier, I just received another report of this in the morning
and was able to reproduce it. I'll create a JIRA issue here shortly
with a patch and reply to this thread with that patch.

Sorry about the trouble,
Shaun

-- 
Shaun Ruffell
Digium, Inc. | Linux Kernel Developer
445 Jan Davis Drive NW - Huntsville, AL 35806 - USA
Check us out at: www.digium.com & www.asterisk.org