Patent ID: 7088803

Claim:
A data access arrangement comprising: a high voltage isolation barrier having a first side and a second side, said high voltage isolation barrier further comprises a plurality of isolation elements including a receive element and a transmit element; a system side circuitry coupled to said first side of said high voltage isolation barrier, said system side circuitry configurable to communicate with a host system circuitry and comprises a first transceiver circuit for bidirectional communications across said high voltage isolation barrier, wherein said first transceiver circuit is coupled to said receive element and said transmit element; and a line side circuitry having a coder/decoder for encoding and decoding serialized digital information, said line side circuitry coupled to said second side of said high voltage isolation barrier, said line side circuitry configurable to communicate with a telephone network and comprises a second transceiver circuit for bidirectional communications across said high voltage isolation barrier, wherein said second transceiver circuit is coupled to said receive element and said transmit element, wherein said first and second transceiver circuits are configurable to transmit and receive said serialized digital information across said high voltage isolation barrier via said receive element and said transmit element, and wherein said serialized digital information comprises multiplexed data and control information communicated at approximately one half of the frequency of said clock signal.