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
Detection of deviations in monitored patterns
Device for inducing a wink in a telephone system
Device for monitoring a switch
Digital exchange system with function of displaying operation st
Distributed architecture for an intelligent networking coprocess
DSL line card echo canceler-based mechanism for locating...
Electronic exchange apparatus