Analog line Fax to an another number

Question

HI - I have an analog fax line 2580 now that we want to forward it to 3600 another fax line. I am not sure if I am doing this right or not (8.6.2 version) in the directory number configuration I check the box Forward all and entered the full phone number of the new fax line, in the CSS I entered the CFwdAll search space.  When do DNA to see if call goes through I get Match Result Blockthispattern, route block cause unallocated number. Not sure why I get this!  On the phone configuration I have the old number as a analog phone in line 1, I added a line two as the new 3600. What am i missing? 

Answer 1

thank you Murali!
I unchecked the Forward all - did not relize it would go to voice mail.
What I meant about line 1 and line2 is the 2nd line to the fax would be for the 3600 number. But sitting thinking about it the fax only has one line so that will not work either.
any thoughts on how to forward the 2580 to go to 3600? We would like to retire this block of DID's.