Matches 1 - 30 out of 30
Match Document Document Title
7356257 Optical switching apparatus and optical communication network system  
An optical communication network system is disclosed, which includes an optical switching apparatus. The optical switching apparatus includes an optical switch for switching and setting routes of...
7124151 Database synchronization apparatus in element management system and method therefor  
The present disclosure relates to a database (DB) synchronization apparatus of a transmission network system which includes a plurality of network elements (NEs) and an Element Management System...
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...
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...
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...
6230286 Computer system failure reporting mechanism  
A mechanism is provided for a failed computer system to send a report of the failure to a remote site without dependency on a service processor or maintenance processor. The computer system is...
6011977 RF simulcasting system with dynamic wide-range automatic synchronization  
A new simulcast dynamic delay adjustment capability for a radio frequency (RF) simulcasting repeater system continually, dynamically adjusts the amount of delay applied to a T1 data stream to...
5875211 Multisite radio system with false mobile radio signalling detection  
In a digitally trunked radio repeating system that may include several radio site repeating transceivers, a site area identification coding system to ensure that transmissions intended for one site...
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...
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...
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...
5659881 Distributed method of call arbitration in an RF trunking multisite coordinator architecture  
A method for resolving talk group call contention in a multi-site trunked radio frequency communications network is accomplished in a distributed manner by utilizing autonomous call arbitration...
5650995 Console dispatch in an extended multisite radio communications network  
In an extended overall radio communications network, one or more dedicated Network Interface Modules (NIMs) are provided in each multisite trunked communications systems to permit the...
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....
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...
5557633 Integrated multi-port repeater having shared resources  
A discrete integrated repeater device and port MAU/AUI functions shares resources among its several ports. The device includes a single multi-bit free running counter providing preselected timing...
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...
5542120 Method for monitoring a communication system  
A method is provided for monitoring operational performance of a communication system including a mobile telephone unit and a plurality of control stations, while the mobile telephone unit is in...
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...
5483665 Simulcast satellite paging system with over lapping paging reception locales  
A paging system includes a satellite uplink (40) for assembling paging information and transmitting it to a satellite (26). The satellite (26) is then operable to transmit in a simulcast manner all...
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...
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...
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...
5392278 Distributed multisite system architecture  
A multisite network switch for a series of RF digital trunked radio transceivers and dispatcher consoles. Each transceiver covers a certain site area. The switch establishes audio communications...
5349584 Method of maintaining control in a trunked communication system  
A master repeater controls a trunked communication system having a number of communication resources. The master repeater determines (201) how many communication resources are available to the...
5086506 Radio trunking fault detection system with power output monitoring and on-air monitoring  
A trunked radio frequency (RF) repeater system for public service trunking (PST) or the like includes a fault detection system having an RF output power monitoring, over-the-air RF monitoring and...
5051740 Paging terminal  
A paging terminal is provided for storing incoming pages during terminal downtime and subsequent transmission thereof.
Matches 1 - 30 out of 30