Analog self-test circuitry for a trunk interface
Apparatus and method for assessing leakage from cable networks
Apparatus and method for automatically detecting defective lines
Apparatus and method for detecting the status of a PCM channel
Apparatus and method for enabling automatic measurement of...
Apparatus and method for examining and standardizing line...
Apparatus and method for selecting a supported signal path...
Audio verification of digital subscriber line connection
Automated dispatching from a telephone cable air pressure...
Automated documentation system for a communications network
Automated documentation system for a communications network
Automated telephone line test apparatus with intelligent...
Automatic provisioning of a telephone line test system
Automatic telephone line fault locator
Cable analyzer with d.c. functions
Call progress monitoring
Capacitance measurement-based mechanism for locating open...
Collaborative trunk testing method and system
Communication line test apparatus for a mobile radio system
Communications channel testing arrangement