Fax Claim Why Would This Fax Number Not Work Properly?

Why would this fax number not work properly? - fax claim

I tried in California and, by fax to a number of Pennsylvania. However, the fax number is picked up by a man at the other end, which says it is not a fax.

Normally this is not confusing, but I talked to the fax recipient (in Pennsylvania), and confirmed that the number was correct. She even called the fax number and heard the sound of the modem at the other end.

That's what I call myself yours find someone to do and access to a machine, as we the same?