Matches 1 - 50 out of 147 1 2 3 >
Match Document Document Title
7333826 Voice hub processing  
Systems and methods are provided for routing voice communications to groups in a voice communication system using a voice hub system. The voice hub system allows a user to group communication...
7245596 Modularly clustered radiotelephone system  
A subscriber cluster unit for a wireless telecommunication system provides a wireless interface with a base station for a plurality of subscriber units. The cluster unit has a plurality of...
7187941 Secure network-routed voice processing  
Systems and methods are provided for routing voice communications through a mobile communication system having a self-contained infrastructure, such as a two-way radio communication system. The...
7003321 Mobile communication system and switching apparatus  
When a signal is sent from a wireless base station 3 - 1, a wireless modem 10 - 1 converts the signal to a signal of a unified transmission form. The switch 11 - 1 switches the signal to one...
6999717 Limiting message diffusion between mobile devices  
Information with local relevance is diffused locally using mobile devices equipped with non-wired short-range communication means, the information being propagated from an originating point in...
6954470 Subscriber RF telephone system for providing multiple speech and/or data signals simultaneously over either a single or a plurality of RF channels  
A system and method for wireless communication between a plurality of subscriber units and a base station, the base station communicating information signals from an originating source to a...
6904280 Communication system with mobile coverage area  
Systems and methods are disclosed for establishing and utilizing a mobile communication system having a mobile communication coverage area. The mobile communication system includes a plurality of...
6904024 Cellular base station with integrated multipoint radio access and intercell linking  
A scaleable, broadband wireless system for providing radio access to a metropolitan area. The metropolitan area is sub-divided into overlapping cellular areas each having a base station for...
6842440 Subscriber RF telephone system for providing multiple speech and/or data signals simultaneously over either a single or a plurality of RF channels  
A system and method for wireless communication between a plurality of subscriber units and a base station, the base station communicating information signals from an originating source to a...
6826647 Voice operated communications interface  
A voice-operated communications interface permits communications between two or more groups using incompatible communications devices such as two-way radios.
6804529 Trunked radio repeater communication system including home channel aliasing and call grouping  
A system for channel assignment in a trunked transmission communication system including a plurality of subscribers. A plurality of subscribers is provided home channel assignment to reduce...
6778097 Remote radio operating system, and remote operating apparatus, mobile relay station and radio mobile working machine  
The present invention relates to remote radio control technology, and a remote radio control system includes a radio movable working machine ( 1 ), a remote control apparatus ( 6 A), and a movable...
6771667 Subscriber RF telephone system for providing multiple speech and/or data signals simultaneously over either a single or a plurality of RF channels  
A subscriber unit synchronizes to a control channel. An assigned frequency and time slot is transmitted on the control channel to the subscriber unit. The subscriber unit is moved from the control...
EP0860953B1 Method of radiotelephone communication between a base station and a mobile telephone by means of a repeater  
6529486 Trunked radio repeater communication system  
A trunked radio repeater communication system capable of use in a networked system includes a plurality of distributive switches and a unique signaling protocol and a switching protocol for...
6496488 Modularly clustered radiotelephone system  
A power-conserving time division multiple access (TDMA) radio telephone system is disclosed in which a cluster of subscriber stations, remote from a base station, employs a common pool of...
6486794 Method of locating a subscriber unit within the coverage area of a communication system  
In a communication system ( 800 ) having transmitters ( 108 ) for transmitting location information to subscriber units ( 102 ) located with the transmitters' coverage areas, a method of...
6415136 Method of minimizing interference between devices which communicate in overlapping communication bands  
A communication system which uses a multi-mode transmitter to communicate in a serial fashion with first and second wireless devices. The system includes a transmitter, a first transmitter control...
EP1213936A1 Mobile communication system and corresponding switch  
When a signal is sent from a wireless base station 3-1, a wireless modem 10-1 converts the signal to a signal of a unified transmission form. The switch 11-1 switches the signal to one of wireless...
6393002 Subscriber RF telephone system for providing multiple speech and/or data signals simultaneously over either a single or a plurality of RF channels  
A digital telephone system for processing a plurality of information signals received in parallel over telephone lines from a public network exchange which are then transmitted in parallel over a...
6374115 Method and apparatus for trunked radio repeater communications with backwards compatibility  
A trunked radio repeater communication system capable of use in a networked system includes a plurality of distributive switches and a unique signaling protocol and a switching protocol for...
6285857 Multi-hop telecommunications system and method  
Free-space, line-of-sight, electro-magnetic communication (i.e., via light or microwaves) is employed to provide a wide range of communication services to geographically scattered users. A relay...
6282180 Subscriber RF telephone system for providing multiple speech and/or data signals simultaneously over either a single or a plurality of RF channels  
A telecommunication system for processing a plurality of simultaneous bidirectional communications includes a primary station and at least one secondary station using wireless transmissions over...
6208630 Modulary clustered radiotelephone system  
A power-conserving time division multiple access (TDMA) radio telephone system is disclosed in which a cluster of subscriber stations, remote from a base station, employs a common pool of...
6078821 Cordless radiotelephone system having an extendable geographic coverage area and method therefor  
A cordless telephone system (300) comprises a portable station (305), a first base station (301) and a second base station (310). The first base station (301) communicates with the portable station...
6014374 Subscriber RF telephone system for providing multiple speech and/or data signals simultaneously over either a single or a plurality of RF channels  
A telecommunication system for processing a plurality of simultaneous bidirectional communications includes a primary station and at least one secondary station using wireless transmissions over...
EP0962107A2 HYBRID UNIVERSAL BROADBAND TELECOMMUNICATIONS USING SMALL RADIO CELLS INTERCONNECTED BY FREE-SPACE OPTICAL LINKS  
Abstract not available for EP0962107 Abstract of corresponding document: US6314163 Diverse communication terminals attach via broadband radio to a communications network at any of typically three...
5930683 Communication system for preventing interference between wireless devices  
A communication system which uses a multi-mode transmitter to communicate in a serial fashion with first and second wireless devices. The system includes a transmitter, a first transmitter control...
5901341 Land mobile radio system having a cell in which mobile radios transmit and receive both data and audio  
A land mobile radio communication system has a plurality of cell cites, each of which includes a plurality of repeaters. The mobil radios in the cell transmit and receive both data and audio. The...
5887261 Method and apparatus for a radio remote repeater in a digital cellular radio communication system  
A digital cellular radio communication system having a remote repeater is provided. The communication system includes a central communication site which: transmits and receives signals in a first...
5864762 Operating a trunked communication system in transmission and message trunked modes  
A digitally trunked radio repeater system provides substantial improvements in timeliness and reliability. The mobile radio transceivers transmit channel requests on the control channel at 9600...
5852604 Modularly clustered radiotelephone system  
A power-conserving time division multiple access (TDMA) radio telephone system is disclosed in which a cluster of subscriber stations, remote from a base station, employs a common pool of...
5842134 Auto-alignment of clear voice and low speed digital data signals in a simulcast system  
In a wide band radio frequency (RF) simulcast communications system analog voice signals are distributed in a digitized form over high speed data channels and processed as high speed data. A...
EP0876006A2 Multi-hop telecommunications system  
Free-space, line-of-sight, electro-magnetic communication (i.e., via light or microwaves) is employed to provide a wide range of communication services to geographically scattered users. A relay...
5831679 Network for retrieval and video transmission of information  
Signal processors for permitting the transparent, simultaneous transmission and reception of a volume of information in the video bandwidth is disclosed. The volume of data is selected in response...
5815799 Priority system for a wide area transmission trunked communication system  
A method and apparatus for providing priority access for users in a transmission trunked communication system, including a plurality of distributive radio network terminal (RNT) switches and a...
5805645 Control channel synchronization between DBC and Cellular networks  
A downbanded Cellular network (DBC) is provided to supplement an adjacent or coincident standard Cellular network. The control channels used by the DBC and standard Cellular network are...
EP0860953A1 Method of radiotelephone communication between a base station and a mobile telephone by means of a repeater  
The method involves using a broadcast repeater (8) covering a shadow zone (7) and a mobile telephone (9) set for one frequency channel. An intermediate zone (4) transmits between the base station...
5787345 Automatic voice prompts in a land mobile radio system  
A land mobile radio communication system has a plurality of cell sites, each of which typically has a plurality of repeaters. The over-the-air radio communications between the cell site repeaters...
5742907 Automatic clear voice and land-line backup alignment for simulcast system  
In a multiple site radio frequency (RF) simuicasting transmission system, voice and digital data distributed via multi-phase modem over "land-line" inter-site communication links from a control...
5734678 Subscriber RF telephone system for providing multiple speech and/or data signals simultaneously over either a single or a plurality of RF channels  
A terrestrial Rf telephone system provides a plurality of voice signal channels on a plurality of forward direction carrier frequencies, each carrier frequency having an associated predetermined...
5715235 Communication system capable of performing FDMA transmission  
A communication apparatus is disclosed which is capable of measuring levels of carrier signals used in adjacent zones during telecommunication with a small circuit scale, and capable of...
5699354 Audio routing within trunked radio frequency multisite switch  
A distributed trunked radio frequency (RF) switching network (multisite switch) distributes audio routing control information and digitized audio signals to communications interface modules (nodes)...
5697059 System for dynamically allocating channels among base stations in a wireless communication system  
A wireless communication system includes a plurality of wideband base stations and a cluster controller that dynamically controls channel allocations among the base stations. When a base station...
5678176 Direct inward dial telephone number recognition in a land mobile radio system  
A land mobile radio communication system has a plurality of cell sites, each of which typically has a plurality of repeaters. The over-the-air radio communications between the cell site repeaters...
5666168 System for transmitting facsimile data in the upper vestigial chrominance sideband of a video signal  
The instant application is directed to a cable facsimile machine which implements the upper vestigial chrominance sideband of a standard video signal for data transmission. Signal processors for...
5657358 Subscriber RF telephone system for providing multiple speech and/or data signals simultaneously over either a single or plurality of RF channels  
A toll quality terrestrial wireless digital multiple access terrestrial communication system is disclosed having a base station in communication with telephone lines and with mobile subscriber...
5627876 Call priority override in a land mobile radio system  
A land mobile radio communication system has a plurality of cell sites, each of which typically has a plurality of repeaters. The over-the-air radio communications between the cell site repeaters...
5625870 Fraud control for radio fleets in a land mobile radio system  
A land mobile radio communication system has a plurality of cell sites, each of which typically has a plurality of repeaters. The over-the-air radio communications between the cell site repeaters...
5617148 Filter by-pass for transmitting an additional signal with a video signal  
A controlled element for spectrum attenuation or a controlled filter is disclosed that is used to aid in the insertion of a secondary signal into a video signal without distorting the blanking...
Matches 1 - 50 out of 147 1 2 3 >