Maintenance termination unit
Mechanism for controlling operation of telephone metallic loop m
Metallic testing of a subscriber loop that provides both...
Method and apparatus for determining the value of analog voltage
Method and apparatus for generating an audible tone in DSL...
Method and apparatus for measuring electrical properties of...
Method and apparatus for monitoring telecommunication signals
Method and apparatus for power regulation of digital data...
Method and apparatus for supervising the accessing and testing o
Method and apparatus for testing remote communication systems
Method and apparatus for testing telephone lines
Method and arrangement for loop test of a disturbed line
Method and arrangement for loop test of a disturbed line
Method and device for improving voice quality on transparent...
Method and system for diagnosing and testing modems and...
Method and system for linking a toll switch
Method and system for one-way delay measurement in...
Method and system for testing mobile communication systems
Method for communicating on an equipment network
Method for frequency and loop length grouping for cross-talk...