No, I connect Elastix server with a openvox B200E to a Router with VoIP provided by VODAFONE (Spain) wich has 2 IDSN ports. I don`t know how it is configured but I receive through these ISDN ports inbound calls to 4 diferent "numbers" (3 Phone numbers and 1 number associated to a Fax) so I'm trying to configure the server to redirect calls to a Fax extension when I receive calls associated to its number.
I know I can configure autodetection for inbound faxes but I have tested it and don't work so I want to test FAX reception forcing the redirection to a extension using a condition with the "FAX number line". But I don't now how to do that.
You will have to know the DID`s that correspond to each of your 4 different numbers, especially the one assigned to your fax, so you can create a proper Inbound Route to the FAX, no more than it.
For more info, look in Elastix Without Tears, this part is covered very well there.