An autodialing circuit is coupled to and responsive to {TAIL ~ the receiving circuit} and {HEAD ~ a telephone line} for dialing a telephone number responsive to the doorbell signal 
An autodialing circuit is coupled to and responsive to { TAIL ~ the receiving circuit } and { HEAD ~ a telephone line } for dialing a telephone number responsive to the doorbell signal
OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH