James,
I'm running Asterisk 1.8.x. When I was running Asterisk 1.4, I used
NVFaxDetect() in my incoming context as this was the only way I could get
it to detect a fax on a SIP trunk. Then, I passed it to a separate server
running Ubuntu with the following:
> exten => fax,1,Dial(IAX2/iaxmodem)
> exten => fax,1,Hangup
I'm not sure if ReceiveFax works in 1.4?
Separately, I've made one additional change to my dialplan based on a
potential security flaw that Lonnie kindly pointed out. Since I am calling
System() and was echoing the callerID, there was a potential for "mischief"
if someone changed their CID to something nasty. By using the Filter()
command, I'm limiting what characters will be echoed.
exten => fax,1,Verbose(3,Incoming fax)
> same => n,Set(FAXDEST=/tmp)
> same => n,Set(tempfax=${STRFTIME(,,%C%y%m%d%H%M)})
> same => n,ReceiveFax(${FAXDEST}/${tempfax}.tif)
> same => n,Verbose(3,- Fax receipt completed with status: ${FAXSTATUS})
> same => n,Set(fromfax=${FILTER(0-9a-zA-Z\x20\x2c\x2d,${CALLERID(all)})})
> ; only allow alpha-numeric characters and space, comma, hyphen -- reduces
> security risk
> same => n,System(tiff2pdf -j -o ${FAXDEST}/${tempfax}.pdf
> ${FAXDEST}/${tempfax}.tif)
> same => n,System(echo -e "To: [email protected]\nSubject: FAX from
> ${fromfax}" | mime-pack "new fax" "${FAXDEST}/${tempfax}.pdf"
> "application/pdf" | sendmail -t)
> same => n,system(rm ${FAXDEST}/${tempfax}.*)
> same => n,Hangup
cheers,
Shamus
----------------------------------------------------------------------
>
> Message: 1
> Date: Fri, 17 Feb 2012 00:39:52 -0500
> From: James Babiak <[email protected]>
> Subject: Re: [Astlinux-users] fax - command to e-mail attachment
> To: [email protected]
> Message-ID: <[email protected]>
> Content-Type: text/plain; charset="iso-8859-1"
>
> I decided to play around with faxing (since we can use the digium
> binaries now), and was surprised at how well it's working. I'm using
> Asterisk 1.4 too.
>
> Everything worked great except for one thing.
>
> I tried your example for fax to email, but it doesn't seem to work as
> written for me. It would never get past the ReceiveFax application in
> the dialplan since the call was disconnected at this point, and it
> immediately killed the channel. The only way I was able to get it to
> continue with the dialplan was to use the "h" extension for everything
> from the Verbose line on. IE:
> /
> [fax-in]
> exten => s,1,Verbose(3,Incoming fax)
> exten => s,n,Set(FAXDEST=/tftpboot/faxes)
> exten => s,n,Set(tempfax=${STRFTIME(,,%C%y%m%d%H%M)})
> exten => s,n,Set(FAXOPT(ecm)=yes)
> exten => s,n,Set(FAXOPT(headerinfo)=ASTERISK)
> exten => s,n,Set(FAXOPT(maxrate=14400)
> exten => s,n,Set(FAXOPT(minrate=2400)
> exten => s,n,ReceiveFax(${FAXDEST}/${tempfax}.tif,d)
>
> exten => h,1,Verbose(3,- Fax receipt completed with status: ${FAXSTATUS})
> exten => h,n,System(tiff2pdf -j -o ${FAXDEST}/${tempfax}.pdf
> ${FAXDEST}/${tempfax}.tif)
> exten => h,n,System(echo -e "To: [email protected]\nSubject: FAX from
> ${CALLERID(all)}" | mime-pack "new fax" "${FAXDEST}/${tempfax}.pdf"
> "application/pdf" | sendmail -t)
> exten => h,n,System(rm ${FAXDEST}/${tempfax}.tif)
> exten => h,n,Return()/
>
> The above worked, but nothing else would.
>
> I'm curious how you were able to get it to continue with the dialplan
> after the channel was hung up while staying in the same extension. Am I
> missing something?
>
> This is actually the first I've really messed with Asterisk and
> sending/receiving faxes directly through it. Pretty neat. I just put
> together a 'faxback' script to receive a fax and then automatically fax
> it back to the originating caller-id. Useful for testing purposes.
> Apparently 1.4 doesn't support the "Originate" dialplan application, so
> I had to have it write out a call file which would be passed back in for
> the outbound leg.
>
> -James
>
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