Re: FAX over T1 Question

[Amaru Netapshaak <postfix_amaru@xxxxxxxxx>]

Bob,

I should have added that I have disabled hardware EC on the T1 ports.

Here is a sample of my zapata.conf -- channels 1-23 are my incoming PRI.
This PRI handles both Voice AND FAX calls.  Having the hardware EC
disabled makes for poor voice communications, and im looking for a way to
enable/disable EC per the call type.   I understand that "echoncancelwhenbridged"
and Zapata should be telling my A104d to enable/disable HWEC automatically.

Channel 25 is the first FXS port on my Rhino CB.  It has a FAX directly
attached to it.

[channels]
language                =  en
switchtype              =  national
signalling              =  pri_cpe
pridialplan             =  national
prilocaldialplan        =  national
faxdetect               =  both
echotraining            =  no
echocancel              =  256
echocancelwhenbridged   =  no
relaxdtmf               =  yes
overlapdial             =  no
usecallingpres          =  yes
amaflags                =  default
context                 =  default
group                   =  1
channel                 => 1-23

signalling              = fxo_ls
faxdetect               = both
echotraining            = no
echocancel              = no
echocancelwhenbridged   = no
relaxdtmf               = yes
context                 = default
callerid                = "FAX" <1112222>
channel                 => 25

Thanks for your assistance everyone!



--- On Fri, 9/5/08, Bob Pierce <pierceb@xxxxxxxxxxxxxx> wrote:

From: Bob Pierce <pierceb@xxxxxxxxxxxxxx>
Subject: Re: FAX over T1 Question
To: "Asterisk Users Mailing List - Non-Commercial Discussion" <asterisk-users@xxxxxxxxxxxxxxxx>
Date: Friday, September 5, 2008, 4:43 PM

On Fri, 2008-09-05 at 09:19 -0700, Amaru Netapshaak wrote:
> I have a Sangoma A104d T1 card, a Rhino 24-port FXS box, and am
> running 
> Asterisk 1.4.21.2

I think you're mostly right on this setup, but I wonder if your A104d is
doing some hardware echo cancellation on these calls. If I'm not
mistaken, that can mess up fax machine communications.

Bob

_______________________________________________
-- Bandwidth and Colocation Provided by http://www.api-digital.com --

AstriCon 2008 - September 22 - 25 Phoenix, Arizona
Register Now: http://www.astricon.net

asterisk-users mailing list
To UNSUBSCRIBE or update options visit:
   http://lists.digium.com/mailman/listinfo/asterisk-users