[Asterisk-Dev] FAX Subsystem discussion.

Roger Wrethman roger at e-scape.co.za
Thu Apr 17 08:54:58 MST 2003


I think (t38modem from OpenH323) is the way to go. Should work straight,
using Asterisk as the h323 to PSTN gateway.

As far as I can see the t38modem is already making all the fax signals for
you.

Roger

-----Original Message-----
From: asterisk-dev-admin at lists.digium.com
[mailto:asterisk-dev-admin at lists.digium.com]On Behalf Of Jon Pounder
Sent: 17 April 2003 05:29
To: asterisk-dev at lists.digium.com
Subject: RE: [Asterisk-Dev] FAX Subsystem discussion.



Which sort of application are people most interested in ?

1) a private fax network where you control both ends of the system ?
2) a gateway in/out of your lan to the pstn for faxing ?

To me at least these are 2 totally different animals.

1) requires some sort of ip protocol and 2 foip endpoints
2) requires a software faxmodem driver for hylafax.

I think 1) is far simpler to solve than 2).

for 1), something as simple as the good old ftp protocol could be used to
exchange files of a predefined type (pdf, tiff, g3, etc) over an ip channel
between two drivers of hylafax. Using LCR algorithms in hylafax, this
driver could be selected for communicating with other stations of the same
type. (this could be a store and forward setup as well, where the far end
foip station is not the final destination of the fax.)

for 2) we actually need the dsp stuff.



At 05:00 PM 4/17/2003 +0200, you wrote:
>At 16:21 17-4-2003 +0200, you wrote:
>>What system is Cisco using for Fax over their IP networks, and their IP to
>>Analog gateway devices?
>>
>>I see that Cisco is using Skinny on their 48 port IP to Analog Gateway.
>
>Skinny is just another dumb voip protocol which uses RTP streams for
>audio. No specific fax-issues there...
>
>
>
>
>Met vriendelijke groet,
>Florian Overkamp
>ObSimRef BV (http://www.obsimref.com/)
>_______________________________________________
>Asterisk-Dev mailing list
>Asterisk-Dev at lists.digium.com
>http://lists.digium.com/mailman/listinfo/asterisk-dev


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