A HOME AND SMALL BUSINESS PHONE SYSTEM FOR OPERATION ON A SINGLE INTERNAL TWISTED PAIR LINE

摘要

The invention is a telephone communication system for communication between a plurality of exterior telephone lines (12) and a single common in house two wire line (20). The system comprises a control unit (10) for coupling to the plurality of exterior telephone lines (12) and for controlling communication between the plurality of exterior telephone lines (12) and the common two wire line (20). A plurality of station units (18) are coupled remotely throughout the building to the common two wire line (20). The control unit (10) communicates on the digital channel with the plurality of station units (18) in a time frame subdivided into a plurality of time slots. A specified portion of each time slot is reserved for control communication between the control unit (10) and each one of the plurality of station units (18).