asterisk users - Mar 2005 - Reproducible echo on IAX calls to -some- destinations.

I'm very, very confused.  Dialing out, through VoicePulse, with both gsm 
and ulaw CODECs, most of my calls are great.  However, calling my 
(non-Asterisk) voicemail at my job, and calling my cell phone both 
produce horrendous (~ 1/3-second delay) echo.  I've tried with different 
phones (Polycom and Grandstream), different IAX CODECs (as described, 
above), different network connections... but those two destinations are 
always horrible, and all my other victim..., errr, test numbers work 
just fine, all the time.

Any idea where to even start troubleshooting?

Thanks,

-Ken

On Tue, 22 Mar 2005 12:49:06 -0500, Ken D'Ambrosio <ken@jots.org>
wrote:
> I'm very, very confused.  Dialing out, through VoicePulse, with both
gsm
> and ulaw CODECs, most of my calls are great.  However, calling my
> (non-Asterisk) voicemail at my job, and calling my cell phone both
> produce horrendous (~ 1/3-second delay) echo.  I've tried with
different
> phones (Polycom and Grandstream), different IAX CODECs (as described,
> above), different network connections... but those two destinations are
> always horrible, and all my other victim..., errr, test numbers work
> just fine, all the time.
> 
> Any idea where to even start troubleshooting?
> 
> Thanks,
> 
> -Ken


I've got no solution for you, but I'll be monitoring this thread in
case any ideas to try on my end come up, as I have the same issue with
my VoIP provider (hi there, I know you're on this list). It's only on
occasional calls, but I have to hang up, I can't deal with it.
--
Dana