Telephonic communications
Having light wave or ultrasonic link for speech or paging...
Including fiber optic link within telephone network
Inventor
active
Digital radio communication system and two way radio
Hanset for a multiple channel communication system and use there
Method and apparatus for communicating an information signal hav
Signalling and control protocol for a communication system
Spectrally efficient TDM duplex communication system
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Profile ID: LFUS-PAI-P-617503