Intersystem group call communication system and method

Meteor burst communication system

Method and apparatus for a distributive wide area network for a

Method and apparatus for a distributive wide area network for a

Method and apparatus for a remote network switch for a land mobi

Method and apparatus for extended coverage of a trunked radio co

Method and apparatus for providing a communication path using co

Method and system for connecting cells and microcells in a wirel

Method and system for detecting messages using enhanced...

Method for integrating audio and visual messaging

Method for preventing an unauthorized device from operating...

Method of adjusting frequency of cellular radio repeater

Method of covering shadow areas in a cellular mobile radio syste

Method of forming frame in multi-hop relay system and system...

Multi point wireless transmission repeater system and...

Multi-donor booster operation and system

Multi-hop telecommunications system and method

On-channel repeater

Pilot signal transmission system

Point-to-multipoint digital radio frequency transport