Patent ID: 6366644
Filing Date: 2002-04-02
Classification: H04L,H04M,H04Q

Abstract:
A digital subscriber line (xDSL) communication system for xDSL communication across a local loop, comprising:a local loop termination point connected to a twisted pair telephone line; customer premises equipment connected to the twisted pair telephone line, the telephone line forming a continuous electrically conductive path without intermediate components between the local loop termination point and the customer premises equipment; a first loop integrity test device for xDSL communication, the first loop integrity test device located at the loop termination point and coupled to the telephone line, the first loop integrity test device operable to independently initiate a first loop integrity test by transmitting test signatures across the telephone line and to complete a second loop integrity test by receiving and evaluating test signatures transmitted by a second loop integrity test device and indicating whether the telephone line can support xDSL communication based upon evaluation of test signatures received from the second loop integrity test device; and the second loop integrity test device located at the customer premises equipment and coupled to the telephone line, the second loop integrity test device operable to independently initiate the second loop integrity test by transmitting test signatures across the telephone line and to complete the first loop integrity test by receiving and evaluating test signatures transmitted by the first loop integrity test device and indicating whether the telephone line can support xDSL communication based upon evaluation of test signatures received from the first loop integrity test device.