I'm trying to hook up an external modem (US Robtics 56K Faxmodem) on a option 11 with S/W Release 2355. I have a cable that has 3 cords coming from it pluged into SLV P2. Port zero works fine for local programming. I have this modem pluged into Port 1 with the "modem eliminator" removed. Is this the correct port and if so how do I program it so that I can come in remotely into the system?