Matches 1 - 39 out of 39
Match Document Document Title
6850774 Portable communications and data terminal operating to optimize receipt of both incoming CDPD and AMPS messages  
A portable radio telephone handset operates as a data transfer terminal as well as an analog cellular telephone subscriber station. Two modes of operation, an analog cellular communication mode and...
6463271 Portable radio telephone data terminal using cdpd  
A portable radio telephone handset includes the capability of operating as a data transfer terminal as well as an analog cellular telephone subscriber station. Two modes of operation are available...
6434395 Portable communications and data terminal having multiple modes of operation  
A portable radio telephone handset includes the capability of operating as a data transfer terminal as well as an analog cellular telephone subscriber station. Two modes of operation are available...
6370135 Continuous CDPD base station and method of facilitating efficient data transfer  
A multi-mode communication system, including controller, base stations and subscriber stations, where the communication system has the capability of operating either in a packet-switched mode or a...
6334062 Portable communications and data terminal operating to optimize receipt of both incoming CDPD and AMPS messages  
A portable radio telephone handset operates as a data transfer terminal as well as an analog cellular telephone subscriber station. Two modes of operation, an analog cellular communication mode and...
6329902 Wide area two-way paging using a mesh network with paging receivers  
A wide area paging broadcast channel for transmitting a page signal throughout a prescribed geographic area over a broadcast channel in response to a page request. At least one subscriber...
6157836 Portable communications and data terminal operating to optimize receipt of both incoming CDPD and AMPS messages  
A portable radio telephone handset operates as a data transfer terminal as well as an analog cellular telephone subscriber station. Two modes of operation, an analog cellular communication mode and...
6122527 Cellular digital packet data mobile data base station  
A cellular digital packet data (CDPD) system includes a mobile data base station (MDBS) configured to interface easily with an advanced mobile phone system (AMPS). The elements of the MDBS are...
5862484 Wide area paging sevice processing method and apparatus of a radio paging system  
A wide area paging service processing method for a radio paging system connected to a public switched telephone network and having a paging system capable of transmitting a radio paging signal. The...
5737706 Power system supporting CDPD operation  
A portable radio telephone handset includes the capability of operating as a data transfer terminal as well as an analog cellular telephone subscriber station. Two modes of operation are available...
5710978 Logging recorder system for trunking radio  
A logging recorder system for trunking radio includes a device which monitors a plurality of channels of the trunking radio system and outputs analog signals representative thereof. A digitizer is...
5625890 Logging recorder system for trunking radio  
A logging recorder system for trunking radio includes a device which monitors a plurality of channels of the trunking radio system and outputs analog signals representative thereof. A digitizer is...
5544222 Cellular digtial packet data mobile data base station  
A cellular digital packet data (CDPD) system includes a mobile data base station (MDBS) configured to interface easily with an advanced mobile phone system (AMPS). The elements of the MDBS are...
5541976 Communications system for integrating a paging system with cellular radio telephones  
The present invention relates to a cellular mobile radio telephone system which incorporates an independent paging capability with an existing mobile telephone by taking advantage of call...
5533029 Cellular digital packet data mobile data base station  
A cellular digital packet data (CDPD) system includes a mobile data base station (MDBS) configured to interface easily with an advanced mobile phone system (AMPS). The elements of the MDBS are...
EP0364447B1 IMPROVED SIGNALLING METHOD FOR ESTABLISHING TRUNKED COMMUNICATION  
Abstract not available for EP0364447 Abstract of corresponding document: US4723264 A trunked communication signalling method is provided by a unifying signalling protocol in which subscribers...
5315636 Personal telecommunications system  
The location independent personal telecommunications system of the present invention enables a subscriber to have a single personal telephone directory number. When that personal telephone number...
5293418 Mobile terminal equipment capable of storing called state  
Mobile terminal equipment communicable with a public switched network has a receiving section for receiving information over a radio channel from a radio station which is accommodated in the public...
5247700 Cellular telephone with pager  
A compact and unitary cellular/pager. The cellular/pager includes a cellular antenna for receiving UHF cellular and paging signals. The cellular/pager also includes a VHF paging antenna. Every...
EP0231259B1 NATIONWIDE RADIO PAGING SYSTEM  
Abstract not available for EP0231259 Abstract of corresponding document: WO8700994 A wide area paging system which interconnects conventional radio common carriers (RCC) (1) for broadcasting page...
5122795 Scanning receiver for nationwide radio paging system  
A scanning radio reciever for a wide area paging system which interconnects conventional radio common carriers (RCC) for broadcasting page information. A plurality of RCC's in each geographical...
4993059 Alarm system utilizing wireless communication path  
An alarm system for a protected premises includes an alarm sensor for generating an alarm signal in the event of an alarm condition. A cellular-type radio/telephone transceiver is located at the...
4878051 Paging system with commands for changing functionality of a paging receiver  
A paging network is disclosed which utilizes a plurality of distributed switches to transmit pages on a non-real time basis to achieve efficient and low cost transmission. Each of the switches...
4876538 Paging system sublocal switch  
A paging network is disclosed which utilizes a plurality of distributed switches to transmit pages on a non-real time basis to achieve efficient and low cost transmission. Each of the switches...
4875039 Paging system with transmission protocol compatible with analog and digital transmitters  
A paging network is disclosed which utilizes a plurality of distributed switches to transmit pages on a non-real time basis to achieve efficient and low cost transmission. Each of the switches...
4870410 Paging system local switch  
A paging network is disclosed which utilizes a plurality of distributed switches to transmit pages on a non-real time basis to achieve efficient and low cost transmission. Each of the switches...
4868860 Paging system for entering pages by local telephone call  
A paging network is disclosed which utilizes a plurality of distibuted switches to transmit pages on a non-real time basis to achieve efficient and low cost transmission. Each of the switches...
4868562 Paging system  
A paging network is disclosed which utilizes a plurality of distributed switches to transmit pages on a non-real time basis to achieve efficient and low cost transmission. Each of the switches...
4868558 Paging system lata switch  
A paging network is disclosed which utilizes a plurality of distributed switches to transmit pages on a non-real time basis to achieve efficient and low cost transmission. Each of the switches...
4866431 Paging system hub switch  
A paging network is disclosed which utilizes a plurality of distributed switches to transmit pages on a non-real time basis to achieve efficient and low cost transmission. Each of the switches...
H000610 Cellular pager  
A pager arranged for operation in a cellular radio system provides economy to subscribers and technological flexibility to a system operator. Paging service is available in any geographical area...
4723264 Signalling method for establishing trunked communication  
A trunked communication signalling method is provided by a unifying signalling protocol in which subscribers request communication channels using only their individual IDs encoded into a single...
EP0040954A1 Radiopaging system.  
A countrywide or nationwide radiopaging system which enables a subscriber situated substantially anywhere in a country to be contacted by a caller also located anywhere in that country includes at...
4178476 Automatic nationwide paging system  
In a radio paging system with multiple base stations covering respective geographic areas, subscribers may move freely from area to area and transfer their paging service accordingly by means of a...
4178475 Method and control apparatus for radio paging systems  
A control apparatus for an automatic radio paging system comprising a paging tone encoder circuit for generating a plurality of paging signals, a radio transmitter for transmitting the paging...
4072638 Halogenated polyether polyols and polyurethane foams produced therefrom  
Rigid and semi-rigid, fire-resisting polyurethane foams which are prepared by reacting in the presence of a foaming agent and a reaction catalyst an organic polyisocyanate and at least one...
3902022 Multiplex system for paging terminals and method  
A plurality of remote multiplex units, each associated with a transmitter for communicating with portable pagers and having a plurality of input telephone lines connected thereto, are connected to...
3836726 DATA TRANSMISSION METHOD AND APPARATUS  
A plural transmitter, digital data transmission and remote control system in the environment of a paging system in which mutual interference by the transmitters is eliminated through the sequencing...
3818145 RADIO PAGING SYSTEM  
Direct-access paging system wherein a paging signal is originated by the person or caller who is making the page. A preassigned telephone number is called to connect the caller to the paging...
Matches 1 - 39 out of 39