Patent ID: 6647024
Filing Date: 2003-11-11
Classification: H04L

Abstract:
A method of telephonic signaling in a communication system between a central office and a remote CPE interface, located at a subscriber premises, in which the communication system supports both POTS and high speed data services comprising the steps of:transforming an analog POTS signal to a digital POTS signal, wherein the communication system supports voice and data transmission, wherein the analog POTS signal comprises a low frequency POTS signal; combining the digital POTS signal with a high speed data signal into a combined digital signal that is based on a single communication spectrum, including the step of multiplexing the digital POTS signal and the high speed data signal at the central office; extracting the high speed data signal from the combined digital signal with an uncombiner circuit to establish an extracted high speed data signal; extracting the digital POTS signal from the combined digital signal with the uncombiner circuit to establish an extracted digital POTS signal, such that the extracted digital POTS signal is convertible into an analog telephonic signal; transmitting the analog POTS signal and the high speed data signal from the central office; transmitting the combined digital signal to the remote CPE interface; transforming the extracted digital POTS signal into an analog telephonic signal with a digital to analog converter; transmitting the analog telephonic signal to a CPE device at the subscriber premises; identifying the occurrence of a power failure at the remote CPE interface, and establishing a life line communication path from the central office to the remote CPE interface in response to identifying the occurrence of the power failure at the remote CPE interface.