Cabinet and position allocation
Cable pair to telephone number verification system
Call protect systems with handoff redundancy
Call-flow verification method and apparatus
Central office technician notification and information system
Central office technician notification and information system
Circuit for a line simulating device
Circuit testing of telephone grids or the like
Client simulator and method of operation for testing...
Combination system for provisioning and maintaining telephone ne
Communication apparatus for receiving identification...
Communication state management system and method in an intellige
Communications link testing
Communications test system
Communications test system
Computer controlled test facility for a telecommunication switch
Connector block with built-in array test feature
Cross-connected switch having means for removing switching modul