TELEPHONE ADAPTER AND TELEPHONE SYSTEM PROVIDING MULTIPLE TELEPHONE LINES

摘要

An adapter (42) for connecting a telephone (52) to a telephone wire (40) has a subscriber line interface circuit (SLIC 113) with a jack for connecting a telephone to the SLIC, a line interface (110) for coupling to a telephone line, a signaling circuit (111) coupled to the line interface for receiving and providing subscriber line signaling on the telephone line, a codec (112) coupled to the SLIC, performing a voice coding/decoding function; and a timi ng circuit (202) for time multiplexing and demultiplexing of digitized voice signals between the SLIC and the line interface.