Re: faxing

Lee Marzke wrote:
> As far as the tone goes,  the calling FAX machine is supposed to send
> the CNG tone,  and the recieving FAX is supposed to answer silently
> and listen for the tone. After detecting the CNG tone it *may* send a
> CED tone if in Automatic mode.
> 
> See:   http://telecom.tbi.net/fax-call.htm
> 
> So you could possibly send the CED tone, but you definitely don't
> want the beeping CNG tone on the answering fax line..
> 
> Many All-in-one HP Fax machines pass the call through the the
> answering machine or house phones if there is no CNG tone,  so
> Asterisk is working just the same way.
> 

>From my understanding of the above link, if both Originator and
Terminator are in MANUAL mode, then nothing happens until they both
switch the phone line to the fax. This would make it impossible for
Asterisk to recieve faxes from MANUAL originators. It times out waiting
for the CNG tone that never comes. Not sure if thats correct or not.

This theory does agree with my experience. I can receive faxes from
"office" fax machines, but not the "home" type where the operator has to
hit the "send" button.

Andy


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