I have an Isotec EZ-1 36 Sytem and I was wondering if there is anyway to change the ring tones. Also, I know that a terminal can be connected for programming. Can a pc be used and if so does anyone know how? Thanks for the help!

I do not know the system 36 that well, but you can program with a PC using procomm plus.
It is an older system and out of production for over 10 years. Try dialing 70 then push the keys on dial pad to see if that changes ring tone.(that is what it is on the IDS)Good Luck!!