[asterisk-users] Zaptel -> DAHDI: now echo

[Patrick Plattes]

hi,

try something like this:

bchan=4-5
hardhdlc=6
echocanceller=mg2,4-5


and then it should look like:
Asterisk-1:~# dahdi_cfg -v
DAHDI Tools Version - SVN-trunk-r6902

DAHDI Version: SVN-trunk-r6946
Echo Canceller(s): MG2
Configuration
======================

SPAN 1: CCS/ AMI Build-out: 0 db (CSU)/0-133 feet (DSX-1)
SPAN 2: CCS/ AMI Build-out: 0 db (CSU)/0-133 feet (DSX-1)

6 channels to configure.

Setting echocan for channel 1 to mg2
Setting echocan for channel 2 to mg2
Setting echocan for channel 3 to none
Setting echocan for channel 4 to mg2
Setting echocan for channel 5 to mg2
Setting echocan for channel 6 to none

Bye,
 Patrick

On Tue, Aug 18, 2009 at 3:08 PM, Jean-Yves Avenard<jyavenard at gmail.com> wrote:
> Hi
>
> That was a fast answer, impressive !
> 2009/8/18 Kevin P. Fleming <kpfleming at digium.com>:
>>
>> Did you read the upgrade documentation that comes with DAHDI,
>> specifically from UPGRADE.txt:
>
> I did, but I guess I did not pay enough attention...
>
>>
>>> * It is no longer possible to select a software echo canceler at
>>>   compile time to build into dahdi.ko; all four included echo
>>>   cancelers (MG2, KB1, SEC and SEC2) are built as loadable modules,
>>>   and if the Digium HPEC binary object file has been placed into the
>>>   proper directory the HPEC module will be built as well. Any or all
>>>   of these modules can be loaded at the same time, and the echo
>>>   canceler to be used on the system's channels can be configured using
>>>   the dahdi_cfg tool from the dahdi-tools package.
>>>
>>>   Note: It is *mandatory* to configure an echo canceler for the
>>>   system's channels using dahdi_cfg unless the interface cards in use
>>>   have echo canceler modules available and enabled. There is *no*
>>>   default software echo canceler with DAHDI.
>>>
>>
>
> So, knowing my card (a Digium TE-110P, which AFAIK doesn't have any
> hardware echo cancellation module)...
> Which software echo canceller should I be using ?
>
> Is see that there are particular software configuration available ,
> but I haven't had a clue on what they are for, nor did I find
> documentation about it...
>
> I'm not building asterisk nor dahdi myself, but instead rely on
> packaged from ATrpms.conf
>
> Thank you
> Jean-Yves
>
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