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