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Match Document Document Title
EP1114542B1 DISTRIBUTED TRUNKING MECHANISM FOR A VHF NETWORK  
Abstract not available for EP1114542 Abstract of corresponding document: WO0018041 A system and method for communicating between nodes in a communications network. The network includes nodes that...
7228130 Method for preventing an unauthorized device from operating in an 800 MHz trunked radio communications system using channels 319 to 0  
A receiving device in a trunked radio communications system determines a transmit frequency, wherein the transmit frequency is calculated by subtracting a voice channel number from 319, multiplying...
7171213 Method for operating in a 800 MHz trunked radio communications system for channels 440 to 559  
A receiving device in a trunked radio communications system determines a transmit frequency, wherein the transmit frequency is calculated by subtracting 440 from a voice channel number, multiplying...
7136664 Method for determining a control channel in a trunked radio communications system utilizing a scan list  
A receiving device in a trunked radio communications system retrieves a first frequency from a scan list and tunes to about the first frequency. If no control channel messages are decoded at the...
7117002 Mobile communication system and method having base station dependent mode and a direct mode  
A mobile communication system, and method, having, in an operational area of the base station, a plurality of mobile stations each capable of operating in an arbitrary one of two kinds of...
7096013 Method for operating in an 800 MHz trunked radio communications system by mapping channels to frequencies  
A receiving device in a trunked radio communications system determines transmit and receive frequencies by a mapping. The receiving device receives a voice channel number, wherein the voice channel...
7089026 Method for determining a control channel in a trunked radio communications system  
A receiving device in a trunked radio communications system retrieves a first frequency, wherein the first frequency relates to a lowest frequency that the at least one repeater utilizes for...
7085573 Method for operating in a 800 MHz trunked radio communications system for channels 0 to 119  
A receiving device in a trunked radio communications system requests a voice channel for a communication and receives an outbound signaling message on a control channel comprising a voice channel...
6996088 Distributed trunking mechanism for VHF networking  
A system and method for communicating between nodes in a communications network. The network includes nodes that broadcast and receive data packets over a radio channel. The system includes a...
EP1031187B1 METHOD AND APPARATUS FOR COMMUNICATING IN A DISPATCH COMMUNICATION SYSTEM  
Abstract not available for EP1031187 Abstract of corresponding document: US5850611 A dispatch communication system (100) that includes a system controller (101), multiple base sites (103-105), and...
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...
6662216 Fixed bus tags for SMP buses  
According to a first aspect of the present invention, a data processing system is provided that includes a communication network to which multiple devices are coupled. A first of the multiple...
6577874 Methods and systems for providing temporary identification numbers for mobile terminals  
A method of receiving digital messages from a mobile terminal at a radio base station of a communications system including a plurality of radio base stations is discussed. This method includes...
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...
6477387 Method and apparatus for automatically grouping communication units in a communication system  
A display-based terminal ( 101 ) employs a method and apparatus for dynamically grouping ( 719, 723, 819, 823 ) communication units in a communication system. The terminal displays a map ( 703, 803...
EP1207637A1 Method to increase the data rate in a telecommunication network  
Data transfer is performed in a half-duplex form with time-multiplexing of telephony (P) and data (D) with a sub channel (S) for service and synchronization. The resultant frame thus comprises time...
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...
6320869 Telecommunication network with improved access protocol  
A telecommunication network including a plurality of secondary stations and a primary station wherein the secondary stations a least partially share a common transmission channel to the primary...
6219538 Method and apparatus for fraud control in cellular telephone systems  
A method and apparatus for fraud control in cellular telephone systems. The invention identifies relative fraud probabilities for call records from the cellular telephone system, associates the...
6185416 Method and apparatus for fraud control in cellular telephone systems  
A method and apparatus for fraud control in cellular telephone systems. Call records from a switch are scanned to identify a fraudulent cellular phone based on its behavior. An identifier, e.g., a...
5950121 Method and apparatus for fraud control in cellular telephone systems  
A method and apparatus for fraud control in cellular telephone systems. The invention identifies relative fraud probabilities for call records from the cellular telephone system, associates the...
5926755 Method and an arrangement for conducting multiple calls simultaneously  
In a radio communication system including at least one radio base station and at least two telephones connected to a radio terminal, simultaneous multiple calls may be set up between the radio base...
5850611 Method and apparatus for communicating in a dispatch communication system  
A dispatch communication system (100) that includes a system controller (101), multiple base sites (103-105), and a group of communication units (107-111) employs a method and apparatus for...
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...
5745853 Method for allocating radio channels in a quasi-transmission-trunked mobile communication system  
A method for allocating radio channels in a quasi-transmission trunked mobile communication system including base stations and a first mobile station communicating with the base stations using...
EP0530199B1 A METHOD FOR AUTOMATICALLY EXECUTING SYSTEM RECONFIGURATIONS  
Abstract not available for EP0530199 Abstract of corresponding document: WO9114278 In a communication system (100) having a communication resource allocator (102), a plurality of communication...
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....
5572574 Cordless telephone registration method  
A method of on-air registration of a cordless telephone handset with a base station, includes the steps of: arming the handset so that it can indicate that it wants to register with a base station;...
5572531 Digital radiotelephone system  
A digital radio telephone system for establishing communications between a main unit and a sub unit and between a plurality sub units. The system includes a main unit and a plurality of sub units....
5555551 Method and apparatus for fraud control in cellular telephone systems  
A method and apparatus for fraud control in cellular telephone systems. Call records from a switch are scanned to identify a fraudulent cellular phone based on its behavior. An identifier, e.g., a...
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...
EP0446318B1 AUTOMATIC EQUIVALENT TEMPORARY TALKGROUP ASSIGNMENT IN A ROAMING TRUNKING ENVIRONMENT  
Abstract not available for EP0446318 Abstract of corresponding document: US4972460 A trunked communication system utilizes talkgroup synchronization for roaming communication units. By...
5506837 Cellular radio communication system which is selectively convertible into a trunked radio communication system for group calls  
Cellular mobile radio systems provide full-duplex communication between base stations and mobile stations and with the fixed public service network. Also known are trunked mobile radio systems...
EP0398911B1 TRUNKED COMMUNICATION SYSTEM WITH NATIONWIDE ROAMING CAPABILITY  
Abstract not available for EP0398911 Abstract of corresponding document: US4833701 Selected regional trunking systems are equipped with telephone interconnect capability and provided with local...
5491835 Method for maintaining audience continuity of a communication group call  
In a multi-site communication system (100), audience continuity of an established communication group call can be maintained by a central controller (116) in the following manner. Upon initial...
5485635 Changing a call identifier for call termination in a digital TDMA radio system  
In a call control method in a digital TDMA radio system a mobile station (MS) is commanded to a traffic channel for a call by signalling performed on the control channel. In accordance with the...
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...
EP0474812B1 DYNAMIC ALLOCATION OF ROAMER ROUTING NUMBERS SYSTEM AND METHOD  
Abstract not available for EP0474812 Abstract of corresponding document: WO9114349 The present invention provides a communications system including at least one mobile transceiver; at least one...
5450611 Fast channel access protocol for a two-way communication system  
Requesting (transmitting) subscriber units may immediately begin transmitting an information signal over an assigned communication channel. Receiving subscriber units immediately unmute their...
5408419 Cellular radiotelephone system signalling protocol  
A communications protocol for a cellular network comprised of a plurality of exchanges each of which includes a software package for providing services to a plurality of subscribers. According to...
5371782 Method and apparatus for selecting a preferred service provider during a call setup in a public cordless telephone system  
In a public cordless telephone system, a cordless telephone handset unit requests and establishes a communications link with a public base unit served by a desired local service provider whenever...
5371492 Method and apparatus for automatically executing system reconfigurations  
In a communication system having a communication resource allocator, a plurality of communication units, a plurality of communication resources, and at least one console, the communication resource...
5353340 Dynamic allocation of roamer routing numbers system and method  
The present invention provides a communications system including at least one mobile transceiver; at least one mobile switching center, at least one mobile switching center including means for...
5287542 Method to expand an audience in a communication system network  
A central controller of a communication system network may more efficiently expand an audience of a communication in the following manner. When a communication unit of a first communication group...
5235631 Trunked talk-group assignment method  
A trunked communication system having reassignable talk-groups. By having the talk-groups reassignable, the trunked communication system can accommodate a large number of user groups without adding...
5218354 Communication system with improved resource assignment  
A trunked communication system wherein some of the communication resources are preassigned for exclusive use only by a predetermined group, such as a public safety agency. In addition, to assure...
5152002 System and method for extending cell site coverage  
A system and a method for extending coverage of a cell site in a cellular radio telephone system include a plurality of repeaters or boosters which are spaced through the region where increased...
5134645 Automatic and sustained association of users with communications paths  
In a network of interconnected wireless networks and wired telephone networks, there is provided a mechanism for sustained association of users with communications paths. It comprises: upon an...
5115514 Measuring and controlling signal feedback between the transmit and receive antennas of a communications booster  
A cellular communication system booster has plural narrowband and wideband channels each having down mixers, local oscillators, IF filters, and amplifiers for amplifying communication signals. On a...
5093923 Optimization system and method  
A method for optimizing antenna orientation in a cellular radio telephone system with respect to a predetermined criterion of signal level includes the steps of orienting the antenna in a selected...
Matches 1 - 50 out of 70 1 2 >