Patent ID: 6496566
Filing Date: 2002-12-17
Classification: H04M

Abstract:
A system to effect metallic testing of a subscriber loop served by a voice switch and a DSL switch, said system comprising:a voice frequency line card having a connection to a first metallic test bus via a first set of relays configured to connect the metallic test bus to said subscriber loop and to disconnect said subscriber loop from a voice band circuit; a DSL line card having a connection to a second metallic test bus via a second set of relays configured to connect the metallic test bus to said subscriber loop and to disconnect said subscriber loop from a DSL circuit; a voice switch metallic test system connected to said first metallic bus via said first relay and configured to send signals to control said second relay and to provide metallic tests over the entire wireline spectrum; and a DSL metallic test system connected to said second metallic bus via said first relay and configured to send signals to control said first relay and to provide metallic tests over the entire wireline spectrum.