Selection of terminal equipment in response to a data message received during silent intervals of ringing

Abstract From the Canadian patent

Responding by telecommunication terminal to data messages received during the silent intervals of ringing to immediately answer a call perform, monitoring activities, provide selective answering of incoming calls and perform, control functions. For providing selective answering telephone sets utilizing the, invention monitor the incoming data message to determine if an identification code of the telephone set is contained within that message. If the identification code of the telephone set is within the message the telephone allows ringing at that set. If the identification code of the telephone is not in the data message the telephone, counts the number of ringing cycles and, once this …