[asterisk-users] fax / t38 gateway

[Wilton Helm]

Thanks Brendan for the explanation.  There is one other idea that struck me, but again, I don't know if it has any merit.  My thinking is to keep FAX as FAX and electronic as electronic, rather than introducing a new hybrid approach.  Obviously Entering FAX from an electronic source is as old as the FAX modem, and Exiting it electronically is as old as E-FAX, not to mention other alternatives.

Is it feasible to simply specify the codec as ulaw or alaw (depending on jurisdiction, I forgot the g numbers) for calls originating from the FXS or whatever the FAX is coming from?  Obviously, the bandwidth would be higher in that case, but you can't get around the laws of physics.  Yes it is lossy compression, still, but it is the simple, predictable form of lossy compression that the modem in every FAX machine already is programmed to cope with.  The only problems I can see would be if the provider who handles the call refuses to accept that codec, or transcodes it to something else.  I don't know the likelihood of either of these.

Wilton
-------------- next part --------------
An HTML attachment was scrubbed...
URL: http://lists.digium.com/pipermail/asterisk-users/attachments/20081027/457054e8/attachment.htm