Apparatus and method providing push to talk over cellular...

Apparatus, and associated method, for facilitating formation...

Automatic-switching wireless communication device

Citizens band radio with wireless cellular telephone...

Communication system, communication terminal, server,...

Control station, a wireless communication system and a...

Event communication system

Extended microphone with positioning display

Fixed setting AM/FM radio system for broadcast promotion

Information guidance service system, information guidance...

Initiator device capable of two-way half-duplex...

Method and apparatus for changing the behavior of an...

Method and apparatus for changing the behavior of an...

Method and apparatus for revoking a talk burst

Method and apparatus to provide digital signaling without...

Method, system, and device for provisioned talkgroup...

Method, system, and device for specifying selective override...

MULTIFUNCTIONAL WORLD WIDE WALKIE TALKIE, A TRI-FREQUENCY...

Portable communication device

Portable telephone