[asterisk-users] setup for fax machine

[Steve Totaro]

On Mon, Oct 13, 2008 at 12:50 PM, Gordon Henderson <
gordon+asterisk at drogon.net <gordon%2Basterisk at drogon.net>> wrote:

> On Mon, 13 Oct 2008, Anthony Messina wrote:
>
> > On Monday 13 October 2008 01:25:12 am Gordon Henderson wrote:
> >> On Sun, 12 Oct 2008, sean darcy wrote:
> >>> Becasue of all the issues with fax over voip, we want to use pstn for
> >>> our fax machine, but not dedicate a line just to fax.
> >>>
> >>> I'm thinking of having asterisk answer the pstn line, check for fax
> >>> tones, and route appropriately. In zapata ( chan_dahdi ) set
> >>> faxdetect=incoming
> >>>
> >>> then the dial plan would have
> >>>
> >>> [incoming-pstn]
> >>> exten => fax,1,Dial(DAHDI/1)  ; the fax machine
> >>> exten => fax,2,Hangup()
> >>>
> >>> exten => s,1,Answer()
> >>> exten => s,2,Dial(DAHDI/2)   ; internal extension
> >>> .............
> >>>
> >>> Would this work? I'll need another TDM410 card to do this, so I'd like
> >>> some reassurance before I go purchase it.
> >>
> >> You need to Answer() the call first, then insert a Wait(2). During that
> >> time, asterisk will be listning for fax tone and jump to the fax
> extension
> >> if it hears them.
> >>
> >> So:
> >>
> >> exten => s,1,Answer()
> >> exten => s,n,Wait(2)
> >>    Ringing()
> >>    Dial(DAHDI/2)
> >>    Hangup()
> >>
> >> and
> >>
> >> exten => fax,1,Dial(DHADI/1)
> >> exten => fax,n,Hangup()
> >
> > would you also be able to detect fax tones during the Backgound app?
>
> I'm really not sure - I think you might have to try it!
>
> Gordon
>

The best way to do this is have a dedicated  fax line, do not use fax
detect, and route any calls to that zap/dahdi port to where you have the
dedicated fax or just keep the fax out of Asterisk entirely.

I am used to large scale fax setup, so I am more familiar with DIDs assigned
to FAX and then use IAXmodem to Hylafax.  Sounds like bigtime overkill for
your use.

You could look at www.trustfax.com (no affiliation but a happy customer),
better service than www.efax.com as far as I am concerned and better
pricing.  My faxing requirements are very low though.

Most customers that insist of dual use POTS lines invariably complain about
the "delay", which I have to explain, especially if they have caller ID too.


-- 
Thanks,
Steve Totaro
+18887771888 (Toll Free)
+12409381212 (Cell)
+12024369784 (Skype)
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