| Patents for H04Q 3 - Selecting arrangements (38,975) |
|---|
| 04/08/1987 | EP0217203A1 Space-coupling device for broadband signals |
| 04/07/1987 | US4656658 Network routing arrangement |
| 04/07/1987 | US4656626 Apparatus and method for providing dynamically assigned switch paths |
| 04/07/1987 | US4656350 Opto-electronic selector having a plurality of optical signal inlets |
| 04/07/1987 | CA1220265A1 Method and apparatus for providing call tracing service |
| 04/02/1987 | DE3534918A1 Computer-controlled PABX system |
| 04/02/1987 | DE3534533A1 Centrally controlled PABX system |
| 04/02/1987 | DE3533796A1 Method for switching optical signals |
| 04/01/1987 | EP0216488A2 Digital signal processor |
| 04/01/1987 | EP0216359A2 Method of preventing overloading of the central controller of a processor-controlled telephone system |
| 03/31/1987 | US4654845 Parallel call processing system and method |
| 03/31/1987 | US4654842 Rearrangeable full availability multistage switching network with redundant conductors |
| 03/31/1987 | US4654784 Circuit arrangement for routing signals between a master-slave pair of controlling processors and several master-slave pairs of controlled processing units |
| 03/31/1987 | US4653850 Space division optoelectronic switch device |
| 03/31/1987 | US4653849 Optical space-division switching assembly |
| 03/31/1987 | CA1219940A1 Adressable photodetector retina |
| 03/26/1987 | DE3534181A1 Switch chip and use of the switch chip exhibiting two switches |
| 03/25/1987 | EP0215276A1 Method and circuit arrangement for the transmission of data signals to a group of control devices within a loop system |
| 03/24/1987 | US4653085 Telephone switching system adjunct call processing arrangement |
| 03/18/1987 | EP0214840A2 Method of conflict resolution in a parallel processor network |
| 03/18/1987 | EP0214499A2 Controlling multi-port hunt groups in a distributed control switching system |
| 03/18/1987 | EP0214476A1 Method and circuit arrangement for the transmission of data signals between two control devices within a loop system |
| 03/18/1987 | EP0214475A1 Circuit arrangement for the transmission of data signals between control devices interconnected by a loop system |
| 03/18/1987 | EP0214474A1 Method and circuit arrangement for the transmission of data signals between control devices interconnected by a loop system |
| 03/18/1987 | EP0214398A1 Method for supervising and controlling the traffic in digital transmission networks |
| 03/17/1987 | US4651343 Piezoelectric apparatus for positioning optical fibers |
| 03/17/1987 | US4650932 Key telephone system |
| 03/17/1987 | CA1219325A1 Electronic key telephone system |
| 03/12/1987 | WO1987001547A1 Subscriber line card arrangement |
| 03/11/1987 | EP0213408A1 Circuit arrangement for telecommunication exchanges, in particular for telephone exchanges equipped with control processors and traffic-measuring devices |
| 03/11/1987 | EP0213382A1 Circuit arrangement for telecommunication exchanges, particularly for telephone exchanges equipped with control processors and traffic-measuring devices |
| 03/11/1987 | EP0213374A1 Circuit arrangement for telecommunication exchanges, particularly telephone exchanges, comprising scanning joints which are cyclically controlled by information interrogation devices |
| 03/11/1987 | EP0213373A2 Method for a communication system, especially a private branch telephone system, with different types of apparatuses as terminals in respect of the selection method |
| 03/11/1987 | CN86205375U Broadcast and telephone automatic switching apparatus |
| 03/10/1987 | US4649234 Circuit arrangement for telecommunications exchange systems, particularly telephone exchange systems, comprising information processing sequential logic systems and traffic measuring devices |
| 03/04/1987 | EP0212654A2 Method and apparatus for disallowing the extension of a call through a network |
| 03/04/1987 | EP0212431A1 Multistage digital switching network |
| 03/04/1987 | EP0212272A1 Circuit arrangement for telecommunication exchanges, particularly telephone exchanges, comprising scanning points which are cyclically controlled by information interrogation devices |
| 03/04/1987 | EP0212177A2 Method for activating operating sequences in an information-processing system, especially in a telephone exchange system |
| 03/04/1987 | EP0146562B1 Rearrangeable multiconnection switching networks |
| 03/04/1987 | CN85204986U Control system for ysk-828 type language laboratory |
| 03/03/1987 | CA1218752A1 Control for a multiprocessing system program process |
| 02/26/1987 | DE3529169A1 Circuit arrangement for telecommunications systems, in particular telephone switching systems, with information-polling devices cyclically activating answering stations |
| 02/26/1987 | DE3529161A1 Circuit arrangement for telecommunications systems, in particular telephone switching systems, with information-polling devices cyclically activating answering stations |
| 02/25/1987 | EP0211675A2 Line terminating apparatus |
| 02/25/1987 | EP0211336A2 Port circuit for coupling an end-user instrument with a port of a communications system |
| 02/25/1987 | EP0211262A2 Method for a private branch exchange in which telephone terminals with various constructions are installed |
| 02/25/1987 | EP0211261A2 Method for automatically testing a communication system, especially a private branch exchange |
| 02/25/1987 | EP0211245A1 Circuit arrangement for telecommunication exchanges, particularly telephone exchanges, comprising switching networks for single and multichannel connexions |
| 02/25/1987 | CN86104257A Communication system with remote-controlled signal receiving apparatus |
| 02/24/1987 | US4646347 Ringing signal reformatting circuit |
| 02/24/1987 | US4646289 Signal multiplexing circuit |
| 02/24/1987 | US4646229 Time-ordered data base |
| 02/24/1987 | US4645879 Call-routing device |
| 02/19/1987 | DE3626870A1 Method for operating a digital telecommunications network with common-channel signalling |
| 02/19/1987 | DE3528645A1 Line concentrator |
| 02/17/1987 | US4644528 Terminating port determination in a distributed control switching system using a distributed database |
| 02/17/1987 | US4644527 Interface unit for transferring voice and data signals |
| 02/17/1987 | US4644353 Programmable interface |
| 02/17/1987 | US4644301 Redundancy system and switching network |
| 02/17/1987 | CA1218171A1 Personal-calling communication system |
| 02/11/1987 | CN86102081A Speakerphone sensing circuit |
| 02/11/1987 | CN86101291A Selecting arrangements for multiplex systems |
| 02/10/1987 | CA1217846A Validity checking arrangement for extended memory mapping of external devices |
| 02/10/1987 | CA1217845A Digital phase locking arrangement for synchronizing digital span data |
| 02/10/1987 | CA1217844A Duplex digital span transmission circuit arrangement |
| 02/04/1987 | EP0210798A2 Programmable data-routing multiplexer |
| 02/04/1987 | EP0210797A2 Digital Subscriber controller |
| 02/04/1987 | EP0210592A2 Methods of establishing and terminating connections in a distributed-control communications system |
| 02/03/1987 | US4641376 Multi-channel multi-cell optoelectronic switching networks for multi-service telecommunications systems |
| 02/03/1987 | US4641301 Telecommunication switching system and priority arrangement used therein |
| 02/03/1987 | US4640993 Telephone subscribers' circuits |
| 02/03/1987 | US4640989 Communications unit for executive work station |
| 02/03/1987 | CA1272278B Calling line tracing system and identification detector |
| 02/03/1987 | CA1217566A1 Real-time data processing system for processing time period commands |
| 02/03/1987 | CA1217550A1 Calling line tracing system and identification detector |
| 01/31/1987 | CN85101387A Signal transmitting system of master-control telephone set |
| 01/29/1987 | WO1987000713A1 Asynchronous addressable electronic key telephone system |
| 01/29/1987 | WO1987000696A1 Active microwave switcher |
| 01/29/1987 | DE3526708A1 Circuit arrangement for transmission of dialling information between communications exchanges within a communications network |
| 01/28/1987 | EP0209540A1 Three relay c.o. trunk interface |
| 01/27/1987 | US4639937 HF avalanche relay communication technique |
| 01/21/1987 | EP0208991A2 Line switching method and system |
| 01/20/1987 | US4638473 Two wire bidirectional digital transmission system |
| 01/20/1987 | US4638124 Key telephone system with distributed control |
| 01/20/1987 | US4638123 Circuit arrangement for a small PABX with a switching matrix that has electronic crosspoints |
| 01/15/1987 | WO1987000375A1 Statistical analysis system for use with public communication facility |
| 01/15/1987 | WO1987000314A1 Optical shuffle arrangement |
| 01/14/1987 | EP0208648A2 Method for automatically testing centrally controlled communication systems, especially those of private branch exchanges |
| 01/13/1987 | CA1216690A1 Telephone line circuit having time-shared dtmf receivers |
| 01/10/1987 | CN85101046A Keyboard for telephone trunk control desk |
| 01/06/1987 | US4635255 Digital subscriber controller |
| 01/06/1987 | US4635250 Full-duplex one-sided cross-point switch |
| 01/06/1987 | US4635187 Control for a multiprocessing system program process |
| 01/06/1987 | US4634812 Method of transferring information between microcomputers in a decentralized process control system, particularly for telephone systems |
| 01/06/1987 | US4634811 Call screening system |
| 01/06/1987 | US4634809 Terminal systems |
| 01/06/1987 | CA1216349A1 Method and apparatus for providing a plurality of special services |
| 12/30/1986 | US4633042 Electronic micro-controller conversion module for step by step switching apparatus |
| 12/30/1986 | US4633039 Master-slave microprocessor control circuit |