benoit at plessis.info
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 Posted: Tue Jun 17, 2008 4:23 pm Post subject: [asterisk-users] Zapata/DAHDI Disable Hardware echo canceler |
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On Tue, Jun 17, 2008 at 10:56:06AM -0500, Kevin P. Fleming wrote:
| Quote: | Benoit Plessis wrote:
| Quote: | Is it possible on a TE220p to deactivate the hardware echo canceler at
will ? (With a function in the dialpan for example)
example for fax SDA ,beeing able to shutdown the echo canceler could
give better results don't you think ?
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All echo cancelers using Zaptel/DAHDI already disable themselves when
FAX or modem communications are used, based on reception and detection
of the CED tone that FAX machines and modems generate to make that
happen. You can tell this happened by looking at the channel in Asterisk
using 'zap show channel' or 'dahdi show channel' as it will show you
that the echo canceler was disabled automatically.
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Karamba !
It mean than that my last option is to put all three digium cards in one box and hope,
that it'll fit and that it'll work better 
(actually i'm using one server with two cards (TE220, B410) which is linked with an (slinear)
IAX peer to another server with one TDM800 to talk to the fax machine.
--
Benoit |
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