Echo-canceling system and method using echo estimate to modify e
Electric circuit connector with auto-termination
Electrical system like a system for testing the channels of...
Electronic controller for sprinkler systems
Electronic exchange apparatus
Electronic interface for exchange of trouble administration info
Electronic key telephone set with function operation test functi
Electronic looping systems for telecommunications system...
Electronic private branch exchange
Electronic surveillance via correlation of call legs
Electronic switching system capable of analyzing charge data aut
Electronic switching system for testing the status of subscriber
Electronic trigger switch for maintenance termination unit
Electronic trigger switch for maintenance termination unit
Employing customer premises equipment in communications network
Employing VXML to provide enhanced voicemail system
Emulator for a telephone system
End-to-end network surveillance
End-to-end network testing
End-to-end network testing