New Fax machine grabs Fax Console faxes I send out

I just got a new Brother 885MC to replace older Brother fax machine.

Yesterday I could Fax from XP Fax Console just fine all day long!
We have 4 cpu's on a network with DSL & "filters" - all was well yesterday!
I took the jacks out of old machine & placed them in exact same slots in new
machine. We are receiving faxes fine, we are manually sending faxes fine.
One cpu set up to receive faxes direct to monitor - not print-out

NOW - every Fax i send out from my computer goes to my OWN new Brother fax
machine. How is that possible?

Thanks for any help . . .
--
Sarasota