Wireless Private Branch Exchange (pbx) (i.e., Wireless Link To Extension Unit) Patents (Class 455/555)
  • Patent number: 6532361
    Abstract: In order, in telecommunications systems having wireless telecommunication between telecommunication devices and cooperating stations, to be able to at least temporarily use cooperating stations with private access authorization (residential cooperating stations) for telecommunication devices as cooperating stations with public access authorization for telecommunication devices, the residential cooperating stations that are connectible to telecommunication networks via network interfaces fetch information that is present in the telecommunication networks and indicate the access authorizations via the interfaces and forward these to the telecommunication devices.
    Type: Grant
    Filed: March 15, 2000
    Date of Patent: March 11, 2003
    Assignee: Siemens AG
    Inventor: Erich Kamperschroer
  • Publication number: 20030040332
    Abstract: A wireless local area network for digital radio communication between remote devices and a PBX telephone system, wherein the remote devices can access and use the voice message features in the PBX and the data bases on a host computer and servers. A wireless phone is provided for voice and data communication through the PBX or a CO telephone line with remote locations or the Internet using digital data packets and standard Internet Protocol. In a preferred embodiment of the invention, the remote device is a cash register comprising a bar code scanner and a phone. Radio communication between the register and a host computer is carried out over two channels, a first channel for data communication and a second channel for voice communication.
    Type: Application
    Filed: June 4, 2002
    Publication date: February 27, 2003
    Inventors: Jerome Swartz, Fred P. Heiman, Daniel R. McGlynn, Robert Beach
  • Publication number: 20030013489
    Abstract: A softswitch at a network operations center (NOC) is in data communication with base transceiver stations (BTSs) at one or more locations. The softswitch performs call processing, mobility management, and media connection switching and signaling to provide communications capabilities to mobile devices in communication with the BTSs. The softswitch routes control signals for calls between the enterprises and the NOC, but routes call media on the most efficient point-to-point paths between the devices on the calls. This routing reduces the amount of bandwidth required between the locations and the NOC and provides economies of scale, thereby allowing a centralized NOC to efficiently support BTSs at multiple locations. Each location has an internet protocol (IP)-based network coupling one or more BTSs for providing coverage to the mobile devices. Each location optionally has a media gateway connected to the IP network and a private branch exchange and/or public telephone network.
    Type: Application
    Filed: September 11, 2002
    Publication date: January 16, 2003
    Inventors: Jack K. Mar, Stephen J. Williams, Ronald B. McLeod, Bradley Long, Ronald P. Linton
  • Publication number: 20030013440
    Abstract: The present invention provides a wireless LAN system which allows each slave communication device to perform wireless telephone communication by itself through a host station without relaying through a master communication device while a single wireless telephone line is used, and does not require particular processing such as authentication on the host station side.
    Type: Application
    Filed: August 22, 2002
    Publication date: January 16, 2003
    Inventors: Sunao Takatori, Hisanori Kiyomatsu
  • Publication number: 20030005066
    Abstract: A system and method for pushing information from a host system to a mobile data communication device upon sensing a triggering event is disclosed. A redirector program operating at the host system enables a user to continuously redirect certain user-selected data items from the host system to the user's mobile data communication device upon detecting that one or more user-defined triggering events has occurred. The redirector program operates in connection with event generating applications and repackaging systems at the host system to configure and detect a particular user-defined event, and then to repackage the user-selected data items in an electronic wrapper prior to pushing the data items to the mobile device.
    Type: Application
    Filed: July 29, 2002
    Publication date: January 2, 2003
    Inventors: Mihal Lazaridis, Gary P. Mousseau
  • Publication number: 20020194285
    Abstract: A system and method for pushing information from a host system to a mobile data communication device upon sensing a triggering event is disclosed. A redirector program operating at the host system enables a user to continuously redirect certain user-selected data items from the host system to the user's mobile data communication device upon detecting that one or more user-defined triggering events has occurred. The redirector program operates in connection with event generating applications and repackaging systems at the host system to configure and detect a particular user-defined event, and then to repackage the user-selected data items in an electronic wrapper prior to pushing the data items to the mobile device. The system includes attachment processing components for identifying one or more attachment displayers in the vicinity of the mobile data communication device and then routing an attachment from the host system directly to a selected attachment displayer.
    Type: Application
    Filed: May 20, 2002
    Publication date: December 19, 2002
    Inventors: Gary P. Mousseau, Mihal Lazaridis
  • Publication number: 20020164991
    Abstract: Methods to create a cellular-like communication system, such as a Wireless Private Branch Exchange (WPBX), which includes mobile devices such as standard cordless phones (handsets), particularly, mobile devices utilizing the Bluetooth short-range wireless communication protocol. The methods provide seamless and reliable handoff of sessions between Base Stations while the mobile device is moving between picocells, by implementing a high-level of synchronization between the Base Stations and the Switch. Base Stations of picocells having small coverage areas communicate with the handsets. The communication protocol is divided into a low-level protocol performed by the Base Stations and a high-level protocol performed by the Switch connected to all the Base Stations. The methods support mobile computing or telephony devices and communication protocols, which are not specified to handle handoffs of sessions while moving between Base Stations coverage areas in a data, voice or telephony wireless network.
    Type: Application
    Filed: February 20, 2002
    Publication date: November 7, 2002
    Applicant: COMMIL LTD
    Inventors: Nitzan Arazi, Yaron Soffer, Haim Barak
  • Publication number: 20020160806
    Abstract: Methods to create a cellular-like communication system, such as a Wireless Private Branch Exchange (WPBX), which includes mobile devices such as standard cordless phones (handsets), particularly, mobile devices utilizing the Bluetooth short-range wireless communication protocol. The methods provide seamless and reliable handoff of sessions between Base Stations while the mobile device is moving between picocells, by implementing a high-level of synchronization between the Base Stations and the Switch. Base Stations of picocells having small coverage areas communicate with the handsets. The communication protocol is divided into a low-level protocol performed by the Base Stations and a high-level protocol performed by the Switch connected to all the Base Stations. The methods support mobile computing or telephony devices and communication protocols, which are not specified to handle handoffs of sessions while moving between Base Stations coverage areas in a data, voice or telephony wireless network.
    Type: Application
    Filed: February 20, 2002
    Publication date: October 31, 2002
    Applicant: COMMIL LTD
    Inventors: Nitzan Arazi, Yaron Soffer, Haim Barak
  • Publication number: 20020132638
    Abstract: A mobile branch exchange (MBX) allows a user of a mobile telephone to exploit the functionality of a private branch exchange (PBX) as if the user were using a PBX-connected wire line telephone in an office setting. A server is placed on corporate premises and the server is configured to communicate with corresponding client software programmed into a programmable mobile telephone. The server directly interfaces with the PBX to control call placement and connectivity and operates as an intermediary proxy for the mobile telephone. In a preferred embodiment, the server establishes a data pathway to the mobile telephone that is, from a network point of view, independent of a parallel voice pathway established between the PBX and mobile telephone.
    Type: Application
    Filed: December 4, 2001
    Publication date: September 19, 2002
    Inventors: Ivar Plahte, Sven Evensen
  • Publication number: 20020128038
    Abstract: The invention relates notably to a wireless corporate communication system comprising a private branch exchange, at least one base station coupled with the private branch exchange, and a plurality of corporate radio terminals under the range of the base station,
    Type: Application
    Filed: February 28, 2002
    Publication date: September 12, 2002
    Applicant: ALCATEL
    Inventors: Martin De Loye, Jean-Francois Deprun
  • Patent number: 6445931
    Abstract: A hybrid interface apparatus for a key telephone system is disclosed, which apparatus is capable of interfacing a data and voice communication between a terminal such as a key telephone, a mobile telephone, a computer, etc. and a key telephone system. The hybrid interface apparatus according to the present invention includes more than at least one key telephone unit, a main apparatus for connecting the key telephones, a personal computer, and a multi-module connected between the main apparatus and a key telephone unit, a mobile telephone and a personal computer for interfacing a wire-based communication, a wireless communication and a data communication.
    Type: Grant
    Filed: December 23, 1999
    Date of Patent: September 3, 2002
    Assignee: LG Information & Communications, Ltd.
    Inventor: Haeng Yeoun Lee
  • Publication number: 20020115471
    Abstract: The invention relates notably to a method for handling calls received from a radio communication network at a wireless mobile terminal, the wireless mobile terminal comprising at least one short-range interface for communicating with office devices located under the range of the short-range interface,
    Type: Application
    Filed: January 25, 2002
    Publication date: August 22, 2002
    Applicant: ALCATEL
    Inventors: Martin De Loye, Jean-Francois Deprun
  • Patent number: 6434402
    Abstract: An accessory device for a mobile station is disclosed that allows one or more mobile subscribers to conveniently and simply use two or more mobile stations at the same time. In addition, the accessory device also provides the ability to bridge the two or more calls into a multi-party call. The accessory device includes two or more connectors, each having a plug on either end. One plug of each connector is inserted into the hands-free port of each mobile station, while the other plug is inserted into the accessory device. The plug that is inserted into the accessory device attaches to leads to a single speaker/microphone combination in the accessory device. The accessory device also includes at least one switch to allow the mobile subscriber to select between the calls or establish a bridge between all of the calls.
    Type: Grant
    Filed: November 4, 1999
    Date of Patent: August 13, 2002
    Assignee: Ericsson Inc.
    Inventors: Lee Davison, Eric Valentine, Pam Ewing
  • Patent number: 6434401
    Abstract: To make a multiband transmitter-receiver without having to greatly increase the number of oscillators used for the modulation and demodulation of signals located in frequency bands that are very different from one another, a pair (13, 14) of programmable frequency dividers is used, installed in a transmission circuit comprising a transmission frequency oscillator (3, 30), a single transition frequency oscillator and an intermediate frequency oscillator. To go from a use (11) in one band to a use in another hand, it is enough, by means of a microprocessor (15), to modify the division coefficients of the programmable dividers by using infradyne and supradyne dividers.
    Type: Grant
    Filed: November 12, 1999
    Date of Patent: August 13, 2002
    Assignee: Sagem SA
    Inventor: Marc Recouly
  • Patent number: 6421368
    Abstract: A system for accessing a telephone system, in which a set of user stations are matched with a set of base stations for connection to a telephone network. Each base station may be coupled directly or indirectly to the telephone network and may be capable of initiating or receiving calls on the telephone network. Each user station may comprise a spread-spectrum transmitter or receiver and may be capable of dynamic connection to selected base stations. A plurality of base stations may be coupled to a private exchange telephone system for coupling user stations in calls outside the telephone network. User stations may use CDMA, FDMA, TDMA or other multiple-access techniques to obtain one or more clear communication paths to base stations. User stations may make and break connections with base stations as the user station moves between service regions, or is otherwise more advantageously serviced by, base stations.
    Type: Grant
    Filed: February 23, 1999
    Date of Patent: July 16, 2002
    Assignee: Xircom Wireless, Inc.
    Inventor: Jeffrey S. Vanderpool
  • Publication number: 20020090961
    Abstract: a communication device that includes a base. The base includes a line interface for receiving incoming communications over a network line and sending outgoing communications over the network line, a communication transceiver for interfacing the communication device over a communication link to other communication devices in a same in-home network and for interfacing other communication devices in the same in-home network to the line interface via the communication link, and a storage medium for storing communication software that allows the communication device to communicate with other communication devices through the transceiver. The communication device also includes a processor coupled to the storage medium and to the line interface. The processor is configured to run the communication software and to receive incoming communications through the line interface and to send an outgoing communications through the line interface. The communication transceiver can be a RF short range transceiver.
    Type: Application
    Filed: January 5, 2001
    Publication date: July 11, 2002
    Applicant: Conexant Systems, Inc.
    Inventors: John S. Walley, Kenneth E. Garey, Doug M. Berger
  • Publication number: 20020090962
    Abstract: There is disclosed an apparatus for interconnecting a plurality of communications mediums, including voice frequency and broadband frequency to a subscriber communications system at the subscriber's premises. The apparatus comprises: 1) a controller for coupling and de-coupling communications mediums comprising at least one public service telephone network (PSTN) line and at least one non-public service telephone network (non-PSTN)line, to a communication system within the subscriber's premises; 2) lightning protection for controller interfaces; 3) a detector circuit for detecting power loss in the non-public service telephone network connection and 4) fail-over (re-connecting to an alternate circuit) devices connected to a public service telephone network line; and 5) a test circuit for monitoring the condition of a backup power supply for the apparatus.
    Type: Application
    Filed: April 20, 2001
    Publication date: July 11, 2002
    Inventors: Paul F. Struhsaker, Rex N. Frodge, Barry W. Barge
  • Publication number: 20020091577
    Abstract: A method and system enables consumers to wirelessly and electronically identify retail purchases and wirelessly transact those purchases. The method includes use of a mobile computing device to wirelessly, electronically obtain a menu of items for sale from a retail unit, select items from the menu, and send a request from the mobile computing device to the retail unit to purchase the selected items. The method optionally includes electronically sending payment for the requested purchase to the retail unit.
    Type: Application
    Filed: January 8, 2001
    Publication date: July 11, 2002
    Inventors: Travis J. Parry, Bryan K. Carter
  • Patent number: 6393300
    Abstract: Apparatus for connecting telephone switch to fixed telephone network or PSTN via a radiotelephone network of GSM type or type derived therefrom. A fixed radiotelephone terminal (RT) has a processor that identifies calls containing an identity belonging to a predetermined set of international mobile subscriber identities (IMSIs), and calls containing an identity belonging to a predetermined set of temporary mobile subscriber identities (TMSIs), both of the sets corresponding to user terminals (UT1, . . . , UT10) which are connected to the switch. The radiotelephone network issues a distinct invoice for each user terminal (UT1, . . . , UT10) even though the same fixed radiotelephone terminal (RT) is used by a plurality of different users, and the radiotelephone network can perform direct inward dialing to each user terminal (UT1, . . . , UT10).
    Type: Grant
    Filed: March 25, 1999
    Date of Patent: May 21, 2002
    Assignee: Alcatel
    Inventors: Olivier Doutheau, Jean-Pierre Aucoeur, Jean-Francois Criqui, Jean-Noël Martin, Jean Charpentier
  • Patent number: 6374078
    Abstract: A decentralized asynchronous wireless communication system is disclosed for providing voice and data communication that allows flexibility of communication paths for local communication or for communication to external networks. The system makes use of handsets that may communicate in a local mode with other handsets within a same microcell via signal extenders. In an extended mode, a handset located in a first microcell of a first macrocell may communicate with a second handset in a second microcell of the first macrocell via signal extenders and a network extender. In a remote mode, a handset located in a first microcell of a first macrocell may communicate with a second handset in a second microcell of a second macrocell via signal extenders and network extenders. The system is particularly suitable for operation in rural areas having a low population density.
    Type: Grant
    Filed: May 31, 2000
    Date of Patent: April 16, 2002
    Assignee: Direct Wireless Corporation
    Inventors: Bill G. Williams, Jerry W. Petermann
  • Patent number: 6370393
    Abstract: The present invention provides a private branch exchange which allows the same system call sign (SYS-ID) to be shared with other private branch exchanges for allocating it to general cell stations. The private branch exchange (PBX), to which a control cell station (CS) is allocated, communicating with mobile stations (PS) reads the system call sign from the control cell station where the system call sign is stored in advance. The system call sign is stored into cell stations in a plurality of private branch exchanges connected to each other when the cell stations belong to the same group as that of the control cell station of the first mentioned private branch exchange.
    Type: Grant
    Filed: July 8, 1999
    Date of Patent: April 9, 2002
    Assignee: NEC Corporation
    Inventors: Kiyokazu Otsuka, Minako Takai
  • Patent number: 6366773
    Abstract: In a radio terminal operation data write method in a private mobile communication system including a multi-node PBX having a plurality of node exchanges connected to each other through a high-speed data line, a node exchange to which a maintenance terminal is connected specifies a registration node exchange of a radio terminal from a logical extension number which is unique within the multi-node PBX and added to the radio terminal, acquires information on a current location area node exchange of the radio terminal through the high-speed data line, and requests the current location area node exchange to write terminal operation data on the radio terminal. The current location area node exchange acquires termination operation data on the radio terminal from the registration node exchange through the high-speed data line in accordance with the logical extension number and writes the terminal operation data.
    Type: Grant
    Filed: May 28, 1999
    Date of Patent: April 2, 2002
    Assignee: NEC Corporation
    Inventors: Takanobu Ihara, Eiji Katsuki
  • Patent number: 6360245
    Abstract: The computer controlled communication system has communication devices (KE1, . . . , KEn) and has data devices (DE1, . . . , DEn) that are connected to a network server (SR) via a local network (LAN), of which devices at least one communication device (KE1, . . . , KEn) and one data device (DE1, . . . , DEn) are respectively associated with a user and are functionally coupled in order to fulfill technical communication performance characteristics. Via a technical communication interface subassembly (VBT), the communication devices (KE1, . . . , KEn) are connected to the network server (SR), which is connected to an open or private switching center (PBX) via a transit switch (ISDN-A/Q), which network server has a gateway (GW) to couple the local network (LAN) to the communication network (ISDN).
    Type: Grant
    Filed: October 22, 1998
    Date of Patent: March 19, 2002
    Assignee: Siemens Schweiz AG
    Inventors: Kurt Amstad, Eugen Rippstein
  • Patent number: 6349212
    Abstract: A cordless telephone arrangement, such as a DECT Business Cordless Telecommunications (BCT) system, comprises a PBX base station (1) and a plurality of mobile stations in the form of portable handsets (2a, 2b . . . 2n). The handsets themselves include no means for independently dialing a telephone number. Instead of a conventional keypad the handsets each comprise only a single “TALK” key 7. The PBX 1 is adapted to dial on behalf of each handset in response to an instruction received by radio communication therefrom. In one embodiment the instructions are delivered orally to the handset. In this case the PBX includes a voice recognition device 12. A voice synthesizer 11 may also be included for returning spoken messages to the handset. The TALK key 7 is used to indicate that the handset is required to make a call, to terminate a call, or to accept an incoming call.
    Type: Grant
    Filed: June 18, 1996
    Date of Patent: February 19, 2002
    Assignee: Nokia Mobile Phones Limited
    Inventors: Nils Erik Vilhelm Martensson, Michael Brian Ashdown
  • Publication number: 20020019246
    Abstract: A system for (and a method of) selectively establishing communication with at least one wireless device associated with a single telephone number serving as a virtual office extension is provided. In a preferred embodiment, the system includes a wireless connect unit in communication with an enterprise private branch exchange (PBX) network. The wireless connect unit preferably serves as a gateway between the PBX and one or more remote communication devices, including at least one wireless device, associated with a virtual extension telephone number. The remote wireless device can be used as a standard PBX office telephone for both inbound and outbound telephone calls. Thus, features of the PBX network (e.g., voice mail, direct extension dialing, corporate calling plan, etc.) are available to the remote wireless device even though it is not physically connected to the PBX.
    Type: Application
    Filed: June 14, 2001
    Publication date: February 14, 2002
    Inventor: Stephen P. Forte
  • Patent number: 6342777
    Abstract: A time division duplex (TDD) portable telephone relay device (and TDD system employing the same) for use with a radio base station and a portable telephone terminal within a terminal building, includes first and second distributors, a synthesizer, a predetermined-size (e.g., relatively small, internal) base station section, a position detecting unit, a synchronous receive section, and an exclusive telephone line connecting unit. With such a structure, transmission/reception using a frequency channel, other than frequency channels assigned to a radio zone where the terminal building exists, is conducted between the portable telephone terminal within the terminal building and the radio base station through the predetermined-size base station section. The predetermined-size base station section executes the operation adapted to TDD based on a synchronous signal from the synchronous receive section.
    Type: Grant
    Filed: March 3, 1998
    Date of Patent: January 29, 2002
    Assignee: Kokusai Electric Co., Ltd.
    Inventor: Sunao Takahashi
  • Patent number: 6330448
    Abstract: In a PBX network, a global database is provided in each PBX node for storing shared data for verification of authorized mobile stations when accessing the network via a wireless cell-site station. During a wireless mode, a mobile station monitors the strength of its downlink signal from a first cell-site station of a first PBX node. If it falls below a threshold, the mobile station begins a scan across the spectrum. If a strong signal is detected, it stops the scan and transmits a handover request message to a second cell-site station transmitting that strong signal. The second node receives the message via the second cell-site station to establish the mobile's verification. If the mobile station is an authorized user, the second node transmits a handover grant message to the second cell-site station, transmits a command message to the first node for a switchover to a link between the first and second nodes, and connects the link to the second cell-site station.
    Type: Grant
    Filed: April 16, 1999
    Date of Patent: December 11, 2001
    Assignee: NEC Corporation
    Inventors: Kiyokazu Otsuka, Yoshio Itagaki
  • Publication number: 20010044314
    Abstract: A cordless telephone arrangement, such as a DECT Business Cordless Telecommunications (BCT) system, comprises a PBX base station (1) and a plurality of mobile stations in the form of portable handsets (2a,2b . . . 2n). The handsets themselves include no means for independently dialling a telephone number. Instead of a conventional keypad the handsets each comprise only a single “TALK” key 7. The PBX 1 is adapted to dial on behalf of each handset in response to an instruction received by radio communication therefrom. In one embodiment the instructions are delivered orally to the handset. In this case the PBX includes a voice recognition device 12. A voice synthesizer 11 may also be included for returning spoken messages to the handset. The TALK key 7 is used to indicate that the handset is required to make a call, to terminate a call, or to accept an incoming call.
    Type: Application
    Filed: June 4, 2001
    Publication date: November 22, 2001
    Inventors: Nils Erik Vilhelm Martensson, Michael Brian Ashdown
  • Publication number: 20010041594
    Abstract: Methods to create a cellular-like communication system, such as a Wireless Private Branch Exchange (WPBX), which includes mobile devices such as standard cordless phones (handsets), particularly, mobile devices utilizing the Bluetooth short-range wireless communication protocol. The methods provide seamless and reliable handoff of sessions between Base Stations while the mobile device is moving between picocells, by implementing a high-level of synchronization between the Base Stations and the Switch. Base Stations of picocells having small coverage areas communicate with the handsets. The communication protocol is divided into a low-level protocol performed by the Base Stations and a high-level protocol performed by the Switch connected to all the Base Stations. The methods support mobile computing or telephony devices and communication protocols, which are not specified to handle handoffs of sessions while moving between Base Stations coverage areas in a data, voice or telephony wireless network.
    Type: Application
    Filed: February 16, 2001
    Publication date: November 15, 2001
    Applicant: COMMIL LTD.
    Inventors: Nitzan Arazi, Yaron Soffer, Haim Barak
  • Patent number: 6314303
    Abstract: An apparatus interfaces with a mobile station to enhance the functionality of that station. The apparatus can be constituted by a base unit that includes an interface adapted to receive and communicate with the mobile station. The base unit further includes processing capabilities and memory which control call processing functions in conjunction with a wireless switch. The base unit communicates with the wireless switch via a transceiver in the mobile station by the connection to the mobile station at the interface element.
    Type: Grant
    Filed: July 29, 1997
    Date of Patent: November 6, 2001
    Assignee: AT&T Wireless Services, Inc.
    Inventor: Alastair Phipps
  • Patent number: 6311073
    Abstract: A system includes: a plurality of fixed radiotelephone terminals connected to a telephone switch serving user terminals; call forwarding circuitry for forwarding a call addressed to one of the user terminals to a mobile service switching center managing the radiotelephone terminals, and providing access to the called user terminal, the forwarded call containing the identity of the called user terminal and containing the identity of the fixed radiotelephone terminal that is the first available in a list of radiotelephone terminals associated with the identity of the called user terminal; and, circuitry situated in the switching center to forward the call to a second fixed radiotelephone terminal designated by its international mobile subscriber identity number if the first terminal is busy. If the second terminal is busy, the switching center forwards the call to a third fixed radiotelephone terminal designated by its international mobile subscriber identity number.
    Type: Grant
    Filed: January 25, 1999
    Date of Patent: October 30, 2001
    Assignee: Alcatel
    Inventors: Jean Charpentier, Edouard Issenmann
  • Publication number: 20010031645
    Abstract: A cordless phone 1 is able to communicate signals 3 via antenna 2 and 3 with transponder unit 5. When the transponder 5 is physically connected (as shown) via multi-way connector 12 to base station 19, the system communicates via PSTN interface 9 and cable 10 connected to local-loop socket 11 within a fixed telephone network. When the transponder 5 is disconnected (not shown) from base station 19, the system communicates via external antenna 6 by radio link with a local base station within a cellular phone network. The base station 19 provides means to recharge the batteries (not shown) of cordless phone 1 via connectors 13 and transponder unit 5 via connectors 14, with dc supply being provided by power plug 16 via cable 17. The transponder unit may include a display screen and PDA electronics (not shown), or, be incorporated within a portable computer (not shown).
    Type: Application
    Filed: January 22, 2001
    Publication date: October 18, 2001
    Inventor: Phillip Jarrett
  • Publication number: 20010027101
    Abstract: In a mobile communication system, when a mobile visitor terminal registered at a first network enters a second network, it sends a registration signal to a first exchange belonging to the second network. The first exchange sends a roaming start request signal to the first network. On receiving authentication information from the first network, the exchange writes it in a VLR (Visitor Location Register) storage. On the origination of a call on the visitor terminal, call information is written to a call information storage. A third exchange stores in an VLR holding node number storage the fact that the call information is stored in the first exchange. When the visitor terminal moves to the area of a second exchange, the second exchange sees, based on the content of the VLR holding node number storage, that the authentication information is stored in the first exchange, and obtains it. The second exchange switches connection thereto on the basis of the authentication information and call information.
    Type: Application
    Filed: March 29, 2001
    Publication date: October 4, 2001
    Inventor: Junichi Koyama
  • Publication number: 20010027120
    Abstract: When a radio terminal communicating with a fixed terminal moves out of a service area of one of radio base stations, a connection to the fixed terminal is switched to a connection to another fixed terminal device such as a voice mail device, which is preliminarily assigned by the radio terminal, to realize a call connection of the fixed terminal to thereby make an indirect communication between the radio terminal and the another fixed terminal.
    Type: Application
    Filed: February 8, 2001
    Publication date: October 4, 2001
    Applicant: NEC CORPORATION
    Inventor: Takanobu Ihara
  • Patent number: 6289089
    Abstract: Key telephone system with a private branch exchange that includes a switching unit, stationary key terminals, and at least one of mobile cordless and GSM terminals. The switching unit is adapted to switch calls to the stationary key terminals and to the at least one of the mobile cordless and GSM terminals. The system also includes a first trunk group and a key server system, in which the stationary key terminals are coupled to the switching unit through the first trunk group and the key server system, at least one additional server comprising a memory unit, and a second trunk group having lines associated with each of the at least one of the mobile cordless and GSM terminals.
    Type: Grant
    Filed: April 30, 1998
    Date of Patent: September 11, 2001
    Assignee: Siemens Schweiz AG
    Inventor: Eugen Rippstein
  • Patent number: 6285879
    Abstract: In accord therewith, at least one identification number (PIID) for identifying a private network (PISN) for access to a first private branch exchange (PBX1) to a subscriber (BS) who was registered and a mobile subscriber telephone number (MSISDN) that was sent into the public mobile radio telephone network (PLMN), is stored in the public mobile radio telephone network (PLMN). A routing number (PRIN) is offered in the mobile radio telephone network on the basis of the incoming mobile subscriber telephone number (MSISDN) and is checked with reference to the stored identification number (PIID) as to whether the call destination lies in the area of a private branch exchange (PBX2) of the same private network (PISN) to which the first private branch exchange (PBX1) belongs.
    Type: Grant
    Filed: January 15, 1999
    Date of Patent: September 4, 2001
    Assignee: Siemens Aktiengesellschaft
    Inventors: Gerhard Lechner, Helmut Rau, Eckard Schöttle, Dirk Weiler
  • Patent number: 6282423
    Abstract: A private wireless communication system (56) is interconnected with a public switched telecommunications network (PSTN). The wireless system (56) includes a mobile telephone switching office (MTSO) (58). A first cell site (60) interconnects with the MTSO (58) through a first PSTN-provided T-1 transmission link 64. A second cell site (62) interconnects with the MTSO (58) through a second PSTN-provided T-1 transmission link (66), and with the first cell site (60) through a third PSTN-provided T-1 transmission link (68). Additionally, the first cell site (60) interconnects with a local exchange carrier (LEC) end office (72) of the PSTN through a fourth PSTN-provided T-1 transmission link (70). The first and second cell sites (60, 62) are located in a local service area (80) of the LEC end office (72), and the MTSO (58) is configured to selectively route communication signals over first, second, third, and fourth PSTN-provided T-1 links (64, 66, 68, 70).
    Type: Grant
    Filed: September 11, 1998
    Date of Patent: August 28, 2001
    Assignee: GTE Wireless Service Corporation
    Inventor: Louis William Scott, II
  • Patent number: 6256303
    Abstract: A high frequency signal transmission apparatus includes a transmitter for transmitting received signals from a signal source as a modulated signal on a high frequency 900 MHz carrier to a remote receiver. The remote receiver converts the high frequency carrier in at least one conversion step to a lower frequency carrier signal. The lower frequency carrier signal carrying the modulated signal is then converted to another carrier signal and retransmitted as a modulated second signal to another remote receiver capable of demodulating the signal and broadcasting the audio sounds or video images. The oscillators in the transmitter and receiver are selectable to operate at discrete frequencies. Automatic fine tuning control is provided in the receiver to accommodate drift of the oscillator in the receiver.
    Type: Grant
    Filed: October 15, 1999
    Date of Patent: July 3, 2001
    Assignee: Akoo, Inc.
    Inventors: Niko Drakoulis, Ronald G. Pace, Michael K. Pedigo, Russell A. Phillips
  • Patent number: 6256512
    Abstract: Wireless calls to a private branch exchange (PBX) which does not support direct inward dialing—either due to limitations of the PBX itself or due to limitations of the PSTN to which the PBX is connected—are routed by means of an adjunct mobile switching center (MSC-A). An originating mobile switching center (MSC-O) serving the mobile unit which places the call by dialing the (typically) three- or four-digit PBX extension sends the dialed extension digits to the home location register (HLR) or service control point (SCP) via an ANSI-41 origination request (ORREQ) signaling message. The HLR or SCP transmits an ANSI-41 routing request (ROUTREQ) signaling message to the MSC-A requesting a temporary local directory number which will be used for connecting the call.
    Type: Grant
    Filed: December 28, 1998
    Date of Patent: July 3, 2001
    Assignee: Nortel Networks Limited
    Inventor: Timothy C. Verdonk
  • Publication number: 20010003092
    Abstract: The present invention relates to a private microcellular telecommunications network comprising a number of network nodes (10,20,30,40) serving as home location nodes for a number of cordless telephones respectively and also keeping information relating to identity (authentication) and current location for the respective cordless telephones. Each network nodes serving as a home location node uses a distributed database function for the home location node functionality which is distributed among the network nodes when needed and it comprises means for using a separate connection (25) for sending enquiry messages and receiving reply messages. The invention also relates to a method of managing mobility in a microcellular private telecommunications network and to a network node in such a network.
    Type: Application
    Filed: December 1, 2000
    Publication date: June 7, 2001
    Inventor: Staffan Sjodin
  • Patent number: 6243739
    Abstract: Access to hypermedia servers connected to networks such as the Internet can be provided through mobile devices such as wireless telephones. Unfortunately, limitations in processing power and memory space of the mobile device and limitations bandwidth of the communication channels connecting the mobile devices to the rest of the network cause long wait times for many types of requests to be serviced. In one application, a user is notified that unsolicited electronic mail has arrived in the user's mail box on a computer connected directly a network and, in response, the user requests the mail to be sent to the mobile device. The perceived latency in servicing such a request can be reduced by delivering at least a portion of the unsolicited electronic mail to mobile device before notifying the user that the mail has arrived in the mail box. In this manner, at least a portion of that mail can be presented to the user in response to a request with little delay.
    Type: Grant
    Filed: December 22, 1997
    Date of Patent: June 5, 2001
    Assignee: Phone.com, Inc.
    Inventors: Bruce V. Schwartz, Stephen S. Boyle, Peter F. King, Bruce K. Martin, Jr.
  • Patent number: 6226515
    Abstract: In order to design a cellular cordless telecommunications system which makes it possible to implement a large number of performance features, for example synchronization, roaming, handover, internal links, hold, check-back, transfer etc. in the cellular cordless telecommunications system without any additional wire link between the cordless base stations in the cellular cordless telecommunications system, the cordless base stations are connected to an S0 bus (i.e., a basic access line for a multi-device configured system).
    Type: Grant
    Filed: November 19, 1997
    Date of Patent: May 1, 2001
    Assignee: Siemens Aktiengesellschaft
    Inventors: Burkhard Pauli, Ralf Neuhaus, Hans-Dieter Ide, Horst Flake, Otger Wewers
  • Patent number: 6223054
    Abstract: A communications platform for enabling the cost-effective deployment of fixed wireless local loop telephone services to residential and commercial subscribers. The platform includes at least one Independent Central Office located within a new residential or commercial development, and connected to the public switched telephone network (PSTN), at least one subscriber base station, and subscriber terminals communicating with the fixed network via a fixed wireless local loop radio path. The customer premise equipment of the telephone subscriber is connected to a switch at the Independent Central Office facility via the fixed wireless local loop radio path, and the switch at the Independent Central Office facility is connected to the incumbent local exchange carrier (LEC) switch at the LEC Central Office facility via direct inward dialing (DID) and direct outbound dialing (DOD) services provided via respective DID and DOD trunk lines.
    Type: Grant
    Filed: September 4, 1998
    Date of Patent: April 24, 2001
    Assignee: LightSource Telecom, LLC
    Inventor: Mark G. Katko
  • Patent number: 6223055
    Abstract: A wireless office architecture, and method of operation thereof, including: (1) a private branch exchange (PBX) having a wired extension and (2) a wireless base station, couplable to the PBX and having a wireless terminal, the wireless terminal associated with the wired extension to allow the wireless base station and the PBX to cooperate to manage the wireless terminal and the wired extension as a unified extension, the wireless base station and the wireless terminal communicating according to a public network standard protocol to allow the wireless terminal to interact both with the wireless base station and in the public network.
    Type: Grant
    Filed: October 24, 1997
    Date of Patent: April 24, 2001
    Assignee: Lucent Technologies, Inc.
    Inventor: Bernard Louis Cyr
  • Patent number: 6212395
    Abstract: A cellular private branch exchange for facilitating cellular communication for a first plurality of mobile station units, which includes a first base station subsystem for communicating with a first and a second mobile station unit of the first plurality of mobile station units on respectively a first and a second cellular bearer data channel. The cellular private branch exchange further includes a cellular private branch exchange unit coupled to the first base station subsystem. In turn, the cellular private branch exchange unit includes a private mobile-services switching center for providing mobility management for the first plurality of mobile station units, the private mobile-services switching center representing a first cross-connect node capable of cross-connecting the first bearer data channel with the second bearer data channel for calls between the first and the second mobile station units.
    Type: Grant
    Filed: September 11, 1997
    Date of Patent: April 3, 2001
    Assignee: Interwave Communications International Ltd.
    Inventors: Priscilla Marilyn Lu, Timothy Richard White
  • Patent number: 6185425
    Abstract: A call routing number for a mobile station operating in a wireless telecommunication system is obtained by first requesting a temporary routing number for use in routing a call to the mobile station. Provided in response to the request is a routing number that had already been assigned to the mobile station when the request was received.
    Type: Grant
    Filed: June 22, 1998
    Date of Patent: February 6, 2001
    Assignee: Telefonaktiebolaget LM Ericsson
    Inventors: Magnus Lindgren, Claes Wikström
  • Patent number: 6181935
    Abstract: A mobility extended telecommunications application and method of use which comprises an integrated wireless and wirelined network with central control and which has a programmed interface to translate between the different protocols of the wireless and the wirelined networks to allow for customized services to be furnished to said wireless network without the necessity of expensive switching and data handling devices. The application can be utilized between many networks, such as enterprise networks, and facilitates the utilization of the architecture of the wirelined network and the home location register of the wireless network for various applications on the wireless network. Moreover, the present invention also allows use of events broadcast via mass media means to modify routing of calls placed from a wireline or wireless based phone.
    Type: Grant
    Filed: May 8, 1997
    Date of Patent: January 30, 2001
    Assignee: Software.com, Inc.
    Inventors: William E. Gossman, Peter J. Hartmaier
  • Patent number: 6167262
    Abstract: A communicating apparatus for performing a communication through a plurality of communication channels including a control channel is constructed by a detection unit to detect a hold request and a transmission unit to transmit a channel switch command to a terminal in a waiting state by the control channel. The transmitting unit transmits the channel switch command such that the terminal waits and responds to a held communication in a state where the terminal is switched from the control channel during a holding state.
    Type: Grant
    Filed: August 12, 1997
    Date of Patent: December 26, 2000
    Assignee: Canon Kabushiki Kaisha
    Inventor: Yoshihiro Tanigawa
  • Patent number: 6141562
    Abstract: An arrangement for providing mobility in a communications system comprising a number of private branch exchanges to which a number of radio exchanges are connected over an interface and wherein a number of cordless extensions are connected to each private branch exchange over the radio exchanges. Between each private branch exchange and at least one radio exchange mobility serving means are arranged which in interworking with the private branch exchange emulate a radio exchange, thus providing cordless mobility between a number of radio exchanges.
    Type: Grant
    Filed: October 10, 1997
    Date of Patent: October 31, 2000
    Assignee: Telefonaktiebolaget LM Ericsson
    Inventor: Dick Eriksson
  • Patent number: 6122502
    Abstract: A cordless telephone base unit includes a registration unit adapted to selectively register with a handset according to at least one predefined criterion, a call handling unit adapted to handle an incoming call when the handset is registered with the registration unit, and a call forwarding unit adapted to forward an incoming call to a forwarding number when the handset is not registered with the registration unit.
    Type: Grant
    Filed: December 23, 1997
    Date of Patent: September 19, 2000
    Assignee: Lucent Technologies Inc.
    Inventors: Jeffrey Paul Grundvig, John P. Veschi