On 01/13/2012 02:12 AM, Olivier wrote:
2012/1/12, Kevin P. Fleming<kpflem...@digium.com>:
On 01/12/2012 06:39 AM, Olivier wrote:
Hi,
I'm having some questions related to echo cancellation configuration
on a Digium board enabled systems (B410P, TE420, TE420B, ....) for
cases when a hardware ech canceller is present or not.
I read in TEXXX manual that when setting echocancel=yes in
chan_dahdi.conf on a VPMOCT64-equiped system, 128ms hardware echo
cancellation was enabled.
1. I'm correct thinking that it is then impossible to switch from
hardware to software echo can without removing the VPMOCT64 module
itself ?
2. Does the same also apply to HA8 and its VPMOCT032 module ?
With DAHDI 2.6 (and possibly 2.5), it is possible to override the
configuration and apply a software echo canceller to a channel even if
it has a hardware one. With prior versions, yes, the echo cancellation
module would have to be physically removed (or disabled using a
parameter to the kernel module).
Then, maybe a line mentioning that in the next User Manual edition
would be perfect.
Sure, but you have to understand that the user manuals for our board
products are typically only updated when the board itself gets changed;
we don't actually deliver DAHDI with the boards, and
installation/configuration instructions for DAHDI are primarily included
in the manual for user convenience. Users should be aware that they
could easily be out of date, and not include all options that are
currently offered (although if the user manual's instructions become
incorrect, we'll update the manual). Regardless, I'll mention this to
the people who manage those products. Thanks!
--
Kevin P. Fleming
Digium, Inc. | Director of Software Technologies
Jabber: kflem...@digium.com | SIP: kpflem...@digium.com | Skype: kpfleming
445 Jan Davis Drive NW - Huntsville, AL 35806 - USA
Check us out at www.digium.com & www.asterisk.org
--
_____________________________________________________________________
-- Bandwidth and Colocation Provided by http://www.api-digital.com --
New to Asterisk? Join us for a live introductory webinar every Thurs:
http://www.asterisk.org/hello
asterisk-users mailing list
To UNSUBSCRIBE or update options visit:
http://lists.digium.com/mailman/listinfo/asterisk-users
