[asterisk-users] app_txfax, app_rxfax

[Kevin Collins]

I modified chan_sip.c to turn on a dsp to do fax detect based on inband dtmf
being selected. And when reading rtp if 'f' character  shows up vector to
fax extension


Kevin Collins
 
-----Original Message-----
From: asterisk-users-bounces at lists.digium.com
[mailto:asterisk-users-bounces at lists.digium.com] On Behalf Of mail-lists
Sent: Tuesday, May 08, 2007 12:04 PM
To: Asterisk Users Mailing List - Non-Commercial Discussion
Subject: Re: [asterisk-users] app_txfax, app_rxfax

ax.
> 
> The downside of rx_fax is that you need to compile it into asterisk.
> 
> The downside of iaxmodem is that (to my knowledge) you can't easilly 
> implement an auto-answer/detect fax/voice/ auto attendant/voicemail 
> system. The channel must be dedicated to faxing, and that's that. This 
> may or may not be an issue for you though.
> 
> The last fax setup I did was for a small 2-person office where they 
> had an existing fax machine that answered, listened for the remote fax 
> squawk, if it didn't get it, then it rung the phones daisy-chained to 
> it, and if they didn't answer it went to answering machine. I 
> implemented this in asterisk fairly easilly with rx_fax. I'm not sure 
> if you can do that with iaxmodem.
> 

Another question along these lines : How does everyone one fax detection on
a sip channel? The only thing I've found is NvFaxDetect - anyone know of
anything else?

thanks
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