Radio telephone system control apparatus and method
Radiocommunications terminal
Radiotelephone
Radiotelephone
Radiotelephone set
Radiotelephone system
Radiotelephone system for groups of remote subscribers
Radiotelephone system for groups of remote subscribers
Radiotelephone system, namely for automotive vehicles
Radiotelephone with hands-free operation
Radiotelephone with sliding acoustic member
Radiotelephones having contact-sensitive user interfaces and...
Range extender with variable gain for coin telephone loops
Rapid processing of immediately successive arrival signals...
Real time processing and management method for canceling out...
Real-time fraud monitoring system
Real-time tiered rating of communication services
Receiver
Receiver apparatus for detection of two voice frequencies in...
Receiver for signalling signals of a frequency lying in the...