[asterisk-users] Fax detection ...

[James]

I've only used this on dedicated fax numbers.
I noticed that some fax machines didn't send tones and Asterisk didn't 
detect.
They just sat there and looked at each other.
After playing the tones, the fax machines started sending and it worked.

James Taylor
www.metrotel.net

----- Original Message ----- 
From: "Michelle Dupuis" <support at ocg.ca>
To: "'Asterisk Users Mailing List - Non-Commercial Discussion'" 
<asterisk-users at lists.digium.com>
Sent: Monday, October 02, 2006 5:04 PM
Subject: RE: [asterisk-users] Fax detection ...


> Interesting trick!
>
> On the down side, won't sending this tone be pointless?  If the receiver 
> is
> not sure a fax is calling, then he will BEEP every caller (even voice
> calls).  If the receiver is sure a fax is calling, why play the tones?
>
> MD
>
> -----Original Message-----
> From: asterisk-users-bounces at lists.digium.com
> [mailto:asterisk-users-bounces at lists.digium.com] On Behalf Of James
> Sent: Monday, October 02, 2006 4:35 PM
> To: Asterisk Users Mailing List - Non-Commercial Discussion
> Subject: Re: [asterisk-users] Fax detection ...
>
> You can trick their machine into sending tones.  The following code with
> send tones that a "terminating" fax machine would normally respond with.
> This will even force really old G2 fax machines to respond.
>
> indications.conf:
> faxrec = !2100/2600,!0/10,!1850/2600
>
> [custom-fax-did]
> exten => s,1,SetVar(FAXFILE=/var/spool/asterisk/fax/${UNIQUEID}.tif)
> exten => s,2,SetVar(EMAILADDR=${FAX_RX_EMAIL})
> exten => s,3,SetCallerID(<${FROM_DID}>)
> exten => s,4,Answer
> exten => s,5,Playtones(faxrec)
> exten => s,6,Wait(6)
> exten => s,7,rxfax(${FAXFILE})
> exten => s,8,system(tiff2pdf -p letter ${FAXFILE} -o ${FAXFILE}.pdf)
> exten => s,9,system(mime-construct --to ${EMAILADDR} --subject "Fax DID
> ${CALLERIDNUM}" --attachment ${CALLERIDNUM}.pdf --type
> application/pdf --file ${FAXFILE}.pdf)
> exten => s,10,system(rm ${FAXFILE} ${FAXFILE}.pdf)
> exten => s,11,Hangup
>
> James Taylor
> www.metrotel.net
>
>
>
>
> ----- Original Message ----- 
> From: "Lee Howard" <faxguy at howardsilvan.com>
> To: "Asterisk Users Mailing List - Non-Commercial Discussion"
> <asterisk-users at lists.digium.com>
> Sent: Monday, October 02, 2006 2:16 PM
> Subject: Re: [asterisk-users] Fax detection ...
>
>
>> phil.dawson at marnock.com wrote:
>>
>>>It all boils down to this:  If they don't send a tone I won't get the 
>>>fax.
>>>
>>
>> And I certainly understand this approach.  However, there are some
>> situations where this is simply not suitable - where missing a fax costs
>> money.  Take, for example, the real estate industry where a fickle
>> customer (isn't everyone fickle when dealing with real estate?) can be
>> surveying mortgage quotes (frequently done by fax) and if you don't get
>> their faxed authorization to pull their credit report and then you call
>> them two days later to find out where it is ... well that customer may
>> have already signed with another lender... and that just cost that agent
>> 1-2% of the mortgage price (so that lost fax easily cost $2000 in lost
>> opportunity).
>>
>> Lee.
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