Method and apparatus for detecting and locating a fault in a...

Method and apparatus for detecting and measuring foreign...

Method and apparatus for detecting and reporting a defective tel

Method and apparatus for determining and reporting the...

Method and apparatus for determining properties of a...

Method and apparatus for determining the value of analog voltage

Method and apparatus for determining whether the advance...

Method and apparatus for determining whether the immediate...

Method and apparatus for digital subscriber loop qualification

Method and apparatus for digitally controlling gain in a talking

Method and apparatus for dispatching services

Method and apparatus for echo canceling accounting for compandin

Method and apparatus for emulating telephone services

Method and apparatus for estimating quality in a telephonic...

Method and apparatus for fault segmentation in a telephone netwo

Method and apparatus for fault segmentation in a telephone netwo

Method and apparatus for fault tolerant call processing

Method and apparatus for generating an audible tone in DSL...

Method and apparatus for gradual application of a hitless...

Method and apparatus for gradual application of a hitless...