Method and apparatus for testing a subscriber loop-based...
Method and apparatus for testing a subscriber loop-based...
Method and apparatus for testing an information notification...
Method and apparatus for testing cables
Method and apparatus for testing call paths over long distance c
Method and apparatus for testing components in a...
Method and apparatus for testing customer premises equipment ale
Method and apparatus for testing echo canceller performance
Method and apparatus for testing remote communication systems
Method and apparatus for testing telephone coin relays
Method and apparatus for testing telephone lines
Method and apparatus for testing telephone sound quality
Method and apparatus of measuring a subscriber line
Method and apparatus of testing a POTS circuit and DSL...
Method and arrangement for loop test of a disturbed line
Method and arrangement for loop test of a disturbed line
Method and circuit arrangement for determining the quality of vi
Method and data structure for the control of switching centers i
Method and device for a debugger and test data collector
Method and device for detecting path faults in a network