asterisk users - Jan 2006 - fax detect DID variable

Has anyone been able to get the original DID number when a fax comes in 
and is detected using the Zap fax detect? I am trying to email faxes 
based on the DID number it came in on but the CALLERID4 variable only 
contains 's' and not the original number. Someone told be the original 
id is saved before calling the fax extension. It looks like it is 
supposed to be in the FAXEXTEN variable but I think the chan_zap.c file 
is detecting the fax tone and calling the fax extension before it gets 
saved in the variable. I am using cvs head v1.2.0. I have not updated to 
the lastest yet because it has been working and it is our office PBX.

- James Armstrong

James Armstrong wrote:
> Has anyone been able to get the original DID number when a fax comes 
> in and is detected using the Zap fax detect?

In your incoming call context where fax calls come in you need to Set 
some user variable to ${EXTEN} before the dialplan continues, because 
once the fax is detected it will get changed.

Then, in your Dial (to IAXmodem or whatever) use the user variable that 
was used with Set instead of ${EXTEN}.

Lee.