Matches 1 - 38 out of 38
Match Document Document Title
6950653 Scanning tone remote adapter for land-mobile radio dispatch for use with dispersed dispatch stations  
A land mobile radio dispatch system is provided, which comprises a radio, one or more remote dispatch devices, and a scanning tone remote adapter connected to the radio and the remote dispatch devi...
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 collisi...
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 interco...
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 interco...
6370234 Public service answering point with automatic triage capability  
A public service answering point system is taught that will perform a triage on incoming calls both fully automatically and with caller interaction. The system will progressively shave out redundan...
6252859 Radio communications system  
A radio communications system includes a plurality of talkgroups. Each talkgroup comprises a number of individual radio units having the capability to communicate with each other on one of a number...
6169880 Method and system of load sharing and prioritization of radio repeaters  
A radio communication system assigns one repeater the role of priority repeater, whereupon that priority repeater exclusively relays all messages between one or more portable radios and a base site...
6081720 Method and apparatus for allocating shared communication channels  
A method and apparatus for allocating shared communication channels between a voice transceiver segment and a data/CDPD transceiver segment of a cellular radio communication system incorporating a ...
6047160 Transportable base station for a trunked radio communication system  
A base station is configured to facilitate its rapid deployment to provide trunked radio communication system. The base station includes a receiving section and a transmitting section functioning a...
6044265 Methods and apparatus for cellular set programming  
A method for programming a cellular set over a control channel may be used to update data stored within a cellular set by having the cellular set search the control channel for data updates that ar...
EP0671109B1 CALL SET-UP IN A TRANSMISSION TRUNKING RADIO SYSTEM  
Abstract not available for EP0671109 Abstract of corresponding document: WO9413110 The invention relates to a call control method in a transmission trunking radio system, in which (i) M traffic ch...
5857144 In-band vehicular repeater for trunked radio system  
A vehicular repeater system communicates with a portable mobile radio using the same RF communication band and digital trunking protocol that it communicates with a base site. The repeater station ...
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 conven...
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 uniq...
5815082 Local communication bus system and apparatuses for use in such a system  
A number of domestic audio/video apparatuses (10-14) are connected to a serial control bus (D2B, 16). Each apparatus is addressable via the bus as a device and contains functional elements addressa...
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 synchronize...
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 poi...
5697058 Call set-up in a transmission trunking radio system  
A call control method in a transmission trunking radio system, in which (i) M traffic channels are simultaneously allocated to at most N mobile stations for a call, N and M being positive integers ...
5625886 Method for forming groups of communication terminals and use of same  
A method is proposed in which groups are formed by first broadcasting a group definition message (GDM) in which a logical formula (LF) is included expressing conditions (C1-N) on classification par...
5613196 Method and apparatus for a distributive wide area network for a land mobile transmission trunked communication system  
A land mobile transmission trunked communication system is provided with a unique switching protocol arrangement among repeaters that are networked to one or more external communication networks. T...
5594761 Control channel timing detection and self correction for digitally trunked simulcast radio communications system  
A control channel timing monitor for a simulcast radio frequency (RF) digitally trunked mobile radio communications system continually monitors the outbound control channel timing of each of plural...
5574788 Trunked radio repeater system  
A digitally trunked radio repeater system provides substantial improvements in timeliness of channel acquisition and channel drop, and in reliability of critical control signalling. The system uses...
5548802 Method and apparatus for a remote network switch for a land mobile transmission trunked communication system  
A method and apparatus for distributively interconnecting a plurality of land mobile trunked transmission communication systems into a wide area network includes a plurality of distributive radio n...
5526376 Intelligent repeater interface  
An intelligent repeater interface (101) connected to a non-intelligent repeater (102) is used to control trunked communications at a trunked communication site in a trunked communications system. T...
5517680 Self correction of PST simulcast system timing  
Arrangements are disclosed for maintaining time synchronization of simulcast radio frequency communications system transmissions. A circuit continually instructs a modem to use the common system cl...
5517677 Adaptive weighting of a scanning sequence  
A scanning technique that is preferential as to communication channels actually utilized in the past. A programmable queue is written with a communication channel identity code based on a predefine...
5513378 Maintaining communications after control breaks in a trunked communication system  
In a trunked communication system with a number of repeaters (101, 103, 105, 107), allocation of communication resources within each coverage area is controlled by one of the repeaters, which acts ...
5477539 Narrow band simulcast system having low speed data distribution  
A "narrow band" public service trunking (PST) simulcast radio frequency transmission system having high-speed and low-speed digital data access capabilities in addition to analog voice operates in ...
5465386 Signaling protocol for a distributive wide area transmission trunked communication system  
A land mobile transmission trunked communication system is provided with an enhanced control signal protocol. The land mobile transmission trunked communication system includes a plurality of trans...
5459761 Intelligent repeater for trunked communications  
An intelligent repeater (101) is used to control trunked communications at a trunked communication site in a trunked communications system. The intelligent repeator (101) transceives and signal pro...
5442809 Method of assigning a voice/data channel as a temporary control channel in a radio communications system  
A method is employed by a central controller of a radio communications system, which method provides for sustaining a predetermined level of communication service. The system includes a plurality o...
5440759 Modular networking switch system for a distributive wide area transmission trunked communication system  
A modular networking switch system for a land mobile transmission trunked communication system provides transmission trunked communications with a plurality of transceivers and networks the plurali...
5392449 Resource management by an intelligent repeater  
In a trunked communication system using intelligent repeaters (101), each intelligent repeater performs a series of tests (602, 606, 610, 614, and 618) on its own functionality. The results of thes...
5212832 Method and apparatus for operator messaging using voice channel signalling  
A method and apparatus for operator messaging within a radio communication system (200) using a resource controller (203), which allocates a plurality of communication resources among a plurality o...
5203011 Method and apparatus for establishing voice and tone signalling communication in a trunked system  
A communication system (100) is provided comprising a communication resource controller (110) wherein the likelihood of success for establishing synchronous digital communication with a communicati...
5125103 Automatic control channel acquisition method and apparatus in a trunked communication system  
A trunked communication system automatic system resource acquisition method and apparatus provide for utilizing dual system resource listings to monitor for priority communications within a primary...
5125101 Trunking method and apparatus for establishing communication in a two-way mobile radio system  
A moble radio system is disclosed in which communication is established between at least two user-operable stations over one of a plurality of channels by operating the user-operable stations in ac...
5086507 Drop channel pre-alert for trunked radio communication system  
To help prevent call bridging and increase the reliability of channel de-assignment in a trunked radio repeater system, the working channel sends a drop channel "pre-alert" message to on-channel mo...

Matches 1 - 38 out of 38