Bruce,

interesting program, but I am still a bit confused. Seems to me that this program act like both the dialer and receiving end.
This line in the program: IF (j > 60) OR (key = 12) Then stop_ringing
seems to only stop ringing if the person dialing decide to stop the ringing or the counter finishes its loop.
What about if the person at the other picks up the telephone, how would it know to stop ringing?
thanks

Ken