[Asterisk-Users] Re: ISDN BRI + echo cancelling + Fax

[Remco Barende]

On Thu, 14 Apr 2005, Edwin Groothuis wrote:

> On Thu, Apr 14, 2005 at 06:04:20AM -0500, asterisk-users-request at lists.digium.com wrote:
>> I'm using bristuff on a box with one BRI line. I have echo cancel on.
>>
>> However incoming faxes (which routed to a Sipura 2000) fail after about 2
>> pages and the fax will report a communication error.
>>
>> I switched off echo cancel but ofcourse now I have an extremely annoying
>> echo.
>>
>> Is there anyway to differentiate and switch on/off echo cancel depending
>> on the type of communication? Adding another bri line just because of this
>> is not really an option.
>
> You might find this one handy:
>    http://bugs.digium.com/bug_view_page.php?bug_id=0003881
>
>     [patch] Add E option to the Dial command to explicitely disable
>     echo cancellation

Thanks!! Will this also work for incoming calls? If I'm not mistaken the 
echo cancel is taken care of by zaptel (zaphfc)?


> Still have to make it available for HEAD.

Looking forward to it :) It would solve a lot of problems.


Thanks!!
Remco


>
> Edwin
>
>