asterisk users - Nov 2004 - Fax pass-throught.

I've already search in the mailing list and voip-wiki site but I can 
not find any examples in how to send a FAX through a IAX channel.
    I've found the fax extention setting, but this is not what I want to 
do. I'd like to dial from the line on the other side of the IAX channel 
to a fax, to cut long distance costs, and send a FAX from the source IAX 
channel. Like bellow:

    source                                                             
                                                         destination
     FAX --- Asterisk  ------- internet ------- Asterisk ------- 
external line ----- PSTN ------  FAX

    I've also tried setting the codec to G.711 but it has not worked either.
    Can anyone shed a light on this matter?
    I am using Asterisk 1.0.2.

    Thanks.
-------------- next part --------------
An HTML attachment was scrubbed...
URL:
http://lists.digium.com/pipermail/asterisk-users/attachments/20041129/3b679f43/attachment.htm

Alessandro Ren wrote:
> 
>     I've found the fax extention setting, but this is not what I want
to
> do. I'd like to dial from the line on the other side of the IAX channel
> to a fax, to cut long distance costs, and send a FAX from the source IAX 
> channel. Like bellow:
> 
>     source                                                             
>                                                          destination
>      FAX --- Asterisk  ------- internet ------- Asterisk ------- 
> external line ----- PSTN ------  FAX

I haven't done this, but I've heard that faxing through a voip
connection
is problematic.  Have you considered the possibility (if you control both
Asterisk installations in your diagram) that you could fax to a virtual
fax on the source Asterisk system which would capture to a file, email or
file transfer the image to the other Asterisk box which would then dial out
and send to the final destination?  This assumes your source and destination
actually have to be real fax machines, otherwise you have even more options.

Check out:
http://scottstuff.net/scott/archives/000152.html

and see if it gives you any ideas.

Steve