[Asterisk-Users] Application Faxing using SIP

[Craig Guy]

I have successfully used the Grandstream ATA286 and Linksys PAP2NA.  I would 
recommend the Grandstream over the Linksys as there is less configuration to 
do and it is IMHO more reliable for faxes.  I have been able to get analog 
data modem connect at 48k on the grandstream whilst cannot get modem to work 
at all on Linksys.

Craig

----- Original Message ----- 
From: "Phil Blundell" <pb at reciva.com>
To: "Asterisk Users Mailing List - Non-Commercial Discussion" 
<asterisk-users at lists.digium.com>
Sent: Monday, February 20, 2006 12:10 AM
Subject: Re: [Asterisk-Users] Application Faxing using SIP


> On Sun, 2006-02-19 at 07:36 -0800, Lee Howard wrote:
>> This will work provided that you can create a near-lossless
>> communication path between the ATA and the PSTN gateway (which is the
>> Asterisk box, I assume).
>>
>> One way of creating that, I would expect, would be to add another
>> ethernet card to your Asterisk server and then run a crossover cable
>> between that interface and the ethernet interface of the ATA.
>>
>> You'll also need to configure the ATA to not do lots of things typically
>> done by ATAs, like echo cancellation.
>
> That's a good idea.  I hadn't thought of using a crossover cable and a
> dedicated card like that.  (Though, that said, I suspect that the
> datapath through our regular network switches is probably close enough
> to lossless for this purpose as well.)
>
> Any recommendations as to which ATAs are suitable for this purpose?  I
> don't remember seeing a way to disable echo cancellation on either the
> Grandstream or the Sipura ones that I have here.
>
> p.
>
>
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