what I found out is the following:
' On Hook: 40 to 50 VDC
' Off Hook: 4 to 6 VDC
' Ringing: 100 VAC
I would also like to have the voltage when the other party has pick-up their phone, so I will know when to stop the pic from sending DTMFout.

I did remove the resistor from the telephone line, and just keeping the capacitor, but no changes. Still cannot dial. I am going to try with an opto coupler instead of the transformer.

k