| Patents for H04Q 3 - Selecting arrangements (38,975) |
|---|
| 08/20/1987 | DE3604607A1 Broadband signal space division switching device |
| 08/19/1987 | EP0232315A1 Asynchronous addressable electronic key telephone system |
| 08/19/1987 | CN86108038A Switching system having multiple parallel switching networks |
| 08/18/1987 | US4688211 Telecommunication switching system |
| 08/18/1987 | CA1225757A1 Time division switching system |
| 08/18/1987 | CA1225729A1 Fault-tolerant array of cross-point switching matrices |
| 08/18/1987 | CA1225728A1 Method of and system for operating an open private communication network |
| 08/13/1987 | WO1987004886A1 Optical space switch |
| 08/13/1987 | DE3604398A1 (Semi-automatic) tracing/identification arrangement preferably on telephone/telex networks (fingerprint) |
| 08/11/1987 | US4686701 Processing sequence calls in a distributed control switching system |
| 08/11/1987 | US4686669 Path hunting in a distributed control switching system |
| 08/11/1987 | US4686330 Telephone switching system |
| 08/05/1987 | EP0231015A1 Coherent photonic telecommunication device |
| 08/05/1987 | CN86108619A Telecommunications network and method |
| 08/04/1987 | US4685128 Method and network for transmitting addressed signal samples from any network input to an addressed network output |
| 08/04/1987 | US4685127 System for converting a No. 5 crossbar telephone switching central office to a conforming equal access central office |
| 08/04/1987 | US4685122 Interface circuit for remote control of a PABX |
| 08/04/1987 | US4684823 Monolithic switch with selective latch control |
| 08/04/1987 | CA1225157A1 Signal recognition system |
| 08/04/1987 | CA1225124A1 Adaptive line hybrids |
| 07/29/1987 | EP0230029A2 Method and apparatus for fault recovery in a distributed processing system |
| 07/29/1987 | CN86108426A 数据存储系统 Data storage system |
| 07/28/1987 | US4683584 Directory number translation in a distributed control switching system |
| 07/28/1987 | CA1224894A1 Subscriber line interface circuit having an impedance synthesizer |
| 07/22/1987 | EP0229684A2 Data framing system for time division multiplexing transmission |
| 07/22/1987 | EP0229494A1 Telecommunications network and method |
| 07/22/1987 | EP0229378A2 Communication system having automatic circuit board initialization capability |
| 07/22/1987 | EP0229299A2 A nonblocking self-routing packet and circuit switching network |
| 07/22/1987 | EP0229177A1 Optical shuffle arrangement. |
| 07/22/1987 | EP0229170A1 Statistical analysis system and method for use with public communication facility. |
| 07/22/1987 | CN86108527A Distributed telecommunication exchange system |
| 07/22/1987 | CN86100184A Communication mode of non-standard communication mode |
| 07/21/1987 | US4682353 Key telephone system |
| 07/21/1987 | US4682349 Switching system with video switching matrix |
| 07/21/1987 | US4682127 Ultra-high frequency signal switching matrix having active component switching junctions |
| 07/21/1987 | US4681397 Optical switching arrangement |
| 07/14/1987 | US4680786 Communication system for providing business communication features to cellular mobile telecommunication customers |
| 07/14/1987 | US4680785 Personal-signaling communication system |
| 07/14/1987 | US4680779 Distributed clock synchronization in a digital data switching system |
| 07/14/1987 | CA1224285A1 Optical main distributor |
| 07/14/1987 | CA1224284A1 Domestic satellite communication system |
| 07/08/1987 | EP0228204A2 Architecture for distributed control telecommunication switching systems |
| 07/08/1987 | EP0228053A2 Control of real-time systems utilizing a nonprocedural language |
| 07/08/1987 | EP0228048A2 Customer programmable real-time system |
| 07/08/1987 | EP0228047A2 State control for a real-time system utilizing a nonprocedural language |
| 07/07/1987 | US4679228 Speakerphone sensing circuit |
| 07/07/1987 | US4679187 Adaptive trunk-compression system with constant grade of service |
| 07/01/1987 | EP0226688A1 Serial link adapter for a communication controller |
| 06/30/1987 | US4677666 Adaptive line hybrids |
| 06/25/1987 | DE3544999A1 Circuit arrangement for videotex operation in telephone PBX systems, in particular intercom and executive-secretary systems |
| 06/24/1987 | EP0226417A1 Operating a multiple-access optical network |
| 06/23/1987 | US4675863 Subscriber RF telephone system for providing multiple speech and/or data signals simultaneously over either a single or a plurality of RF channels |
| 06/23/1987 | US4674828 Light-conductive circuit unit including light deflecting means and optical switching means |
| 06/23/1987 | CA1223323A1 Control channel interface circuit |
| 06/18/1987 | WO1987003763A1 Routing of network traffic |
| 06/18/1987 | WO1987003761A1 Operating a multiple-access optical network |
| 06/16/1987 | US4674119 Wide-band high voltage amplifier for telephone exchange subscriber line interface utilizing low voltage control circuitry |
| 06/16/1987 | US4674036 In a fault tolerant processor system |
| 06/16/1987 | US4673933 Switch matrix encoding interface using common input/output parts |
| 06/10/1987 | EP0225084A2 Line Access apparatus |
| 06/10/1987 | EP0225083A2 Line access apparatus for in-band communication |
| 06/09/1987 | US4672662 Switching system and method for network having a plurality of terminal control equipment units |
| 06/04/1987 | WO1987003440A1 Interface circuit |
| 06/03/1987 | EP0224244A2 Switching system having multiple parallel switching networks |
| 06/03/1987 | EP0224241A2 A self-routing switch node combining electronic and photonic switching |
| 06/03/1987 | EP0224212A2 Dial tone detection arrangement with a detection notification feature |
| 06/02/1987 | US4670901 Single or multi-stage switching field for telephone exchanges |
| 05/27/1987 | EP0222910A1 Active microwave switcher |
| 05/27/1987 | CN86107804A Solid state trunk circuit |
| 05/26/1987 | US4669113 Integrated network controller for a dynamic nonhierarchical routing switching network |
| 05/26/1987 | US4669110 Call progress tone system |
| 05/21/1987 | DE3542405C1 Telephone exchange circuitry identifying caller - assigns two microprocessors, matching circuits and memories to subscriber selectors |
| 05/20/1987 | EP0222304A1 Space-switching device for broad-band signals |
| 05/20/1987 | EP0222251A2 A method of providing notification to a held party. |
| 05/19/1987 | US4667320 Space-division switching network for high data rate signals |
| 05/13/1987 | EP0221490A2 Space switching device for broad-band signals |
| 05/13/1987 | EP0221360A2 Digital data message transmission networks and the establishing of communication paths therein |
| 05/13/1987 | EP0221090A1 Single line telephone communication system |
| 05/12/1987 | US4665531 Alternate mark inversion (AMI) receiver |
| 05/06/1987 | CN86107249A Wide band signal space coupling arrangements |
| 05/06/1987 | CN86107155A Wide band signal space coupling arrangements |
| 05/05/1987 | US4663620 Modified crossbar switch operation with fixed priority conflict resolution and apparatus for performing same |
| 05/05/1987 | CA1221444A1 Apparatus for use in an exchange of a telephone system |
| 04/29/1987 | EP0220019A2 D-5 channel bank control structure and controller |
| 04/29/1987 | EP0219848A2 Space switching device for broad-band signals |
| 04/29/1987 | EP0219771A2 Method for influencing dial number evaluation and translation processes in a programme-controlled telecommunication switching system |
| 04/29/1987 | CN85107738A Control device of swich |
| 04/28/1987 | US4661978 Subscriber line interface circuit having an impedence synthesizer |
| 04/28/1987 | US4661974 Automatic route selection of a private telephone network path on the basis of a public telephone network number |
| 04/28/1987 | US4661946 Digital switch module having encoding law conversion capability |
| 04/28/1987 | EP0127656A4 A telephone switching arrangement. |
| 04/28/1987 | EP0126768A4 A memory cartridge for connection to a telephone switching arrangement. |
| 04/28/1987 | CA1221155A1 Duplicated time division switching system |
| 04/22/1987 | EP0219085A2 A spread spectrum wireless PBX |
| 04/21/1987 | US4660219 Extension ringing arrangement key telephone system |
| 04/14/1987 | US4658397 Time division multiplex data transfer system and method for telephone switching or like applications |
| 04/14/1987 | US4658098 Circuit arrangement for telecommunications switching systems, particularly telephone switching systems, comprising information-processing central switch devices and sub-central switching facilities which supply the same with information |
| 04/08/1987 | EP0217609A2 Receiver for digital AMI coded signals |
| 04/08/1987 | EP0217468A1 Broadband optical distribution system |
| 04/08/1987 | EP0217309A2 Communication system for providing business communication features to cellular mobile telecommunication customers |