Payphone having master and slave modes
Personal artificial loop (p.a.l.)
Power-failure resistant communication system
Private branch exchange system with specific information transmi
Processes and systems for creating and for managing trouble...
Public telephone set
Real time call trace capable of use with multiple elements
Service control platform
Service state administration for a communications apparatus
Silent monitoring agent IDs
Switch-adjunct interface
Switch-adjunct interface
Switching apparatus having function for processing malicious...
System and method for controlling message looping between networ
System and method for detecting SS7 messaging inefficiency
System and method for end-to-end communications tracing
System and method for end-to-end communications tracing
System and method for end-to-end communications tracing
System and method for establishing a call between a calling...
System and method for faulty mobile unit isolation