Matches 1 - 23 out of 23
Match Document Document Title
6947394 Flexible radio link control protocol  
A flexible Radio Link Control (RLC) protocol for a mobile communication system is provided, whereby a plurality of different RLC functions are defined. These different RLC functions can be combined...
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...
6535578 Fault control and restoration in a data communication system  
A method of controlling a multi-channel processor board ( 1 a ) in a telecommunications system comprises monitoring the fault status of a multiplicity of processor cores ( 3 ), each arranged to...
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...
6466646 Method for verifying the proper functioning of a system  
The invention concerns a method which consists in modelling the system under study using a system of automatons synchronised by a set of messages; in deriving from said modelling a system of linear...
6405043 Method to characterize the prospective or actual level of interference at a point, in a sector, and throughout a cellular system  
A computer implemented process compares signals communicated between a known position and a plurality of base stations in a cellular telephone system to determine the level of interference with a...
6381239 Multiple application switching platform and method  
A multiple application switching platform includes a switch having a distributed open architecture and incorporating redundancy for enhanced fault tolerance. The switch includes at least one shelf...
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...
6181929 Method for switching cell site controllers  
A radio frequency communication system includes a cell site (FIG. 1), the cell site including an on-line controller (100), an off-line controller (101) and one or more peripheral units (107, 108,...
6108551 Assigning of transmission turns to radio units  
The present invention relates to a method and radio unit for assigning transmission turns to a radio unit (RU2) wishing to operate on a direct mode channel (f1). To assign the transmission turns in...
5920607 Adaptive wireless cell coverage  
A system and method for controlling a wireless network such that degradation of service availability is reduced or eliminated. The present invention monitors a wireless network. In response to a...
5835564 Method for enhancing the reliability of a wireless telecommunications system  
A method for determining the operational status of base stations deployed in a cellular telecommunications system comprises continually sharing operational status data with adjacent base stations...
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...
5801690 Method for managing termination of a multi-processing software application  
A computer system (110) has a multi-processing software application operating (200) thereon. There are multiple client processes (221-228) concurrently operating as components of the...
5697052 Cellular specialized mobile radio system  
An SMR repeater is made agile by adding a microprocessor controlled frequency selection circuit to enable the repeater to operate on any one of several available frequencies in a band. For dispatch...
5642396 Release cause table for failed calls in SS7/ISDN Networks  
A plurality of release action tables are maintained in the switching nodes of a telecommunication network, e.g SS7, ISDN, one table for each trunk group. The table indicates desired actions or...
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....
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...
5530921 Enhanced system and method for implementing a backup control channel in a cellular telecommunication network  
A local control mechanism for automatically parking an active combiner filter and activating an alternate combiner filter in an auto-tune combiner in a radio telecommunications network is resident...
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...
5440616 Method and apparatus for interconnecting a messaging system and a private branch exchange  
Interconnecting a messaging system (voice, facsimile, and so forth) with a PBX which provides entirely digital voice transmission and which provides high bandwidth and redundant transmission of...
5402491 Method for providing limited secure services in secure trunking communication systems  
In a secure trunking communication system, limited secure service is provided during periods of limited service or failsoft operations using the following method. When the limited service or...
Matches 1 - 23 out of 23