| Patents for H04Q 1 - Details of selecting apparatus or arrangements (11,745) |
|---|
| 06/25/1992 | WO1992004794A3 Alarm and test system for a digital main line |
| 06/24/1992 | EP0491252A1 Wire guiding element for a distributor in telecommunication installations |
| 06/24/1992 | EP0491245A1 Support unit for distributor connector blocks in telecommunication installations |
| 06/20/1992 | CA2057809A1 Carrier unit for terminal strips of a distribution frame in a telecommunications system |
| 06/20/1992 | CA2057807A1 Distributor unit for attaching and connecting electrical lines in telecommunication systems |
| 06/20/1992 | CA2057763A1 Wire guide element for a distribution unit in telecommunication system |
| 06/17/1992 | DE4040212A1 Telephone answering machine accessory for urgent calls - responds to urgent call identification code to switch through call to telephone |
| 06/17/1992 | DE4039502A1 Wall housing for communications exchange - has earth plate coupled to earth potential conductor paths of printed circuit board and attached modules |
| 06/16/1992 | US5123041 Apparatus for testing telephone cables |
| 06/10/1992 | EP0489642A1 Prewireable terminal block |
| 06/09/1992 | US5121424 Telephone system and speech level adjusting method therefor |
| 06/09/1992 | US5120247 Connection strip for high-reliability cabling |
| 06/09/1992 | CA1303200C Isdn quick connect terminating resistor |
| 06/03/1992 | EP0488099A1 Protection box against electromagnetic disturbances for electric connection device |
| 06/03/1992 | EP0487893A1 Modular jack patching device |
| 06/03/1992 | EP0487802A1 Distribution frame for telecommunications |
| 06/03/1992 | CN1016927B Digital composite tone alerting |
| 06/02/1992 | US5119418 Telephone system with several terminals on a single line |
| 06/02/1992 | US5119322 Digital dtmf tone detector |
| 05/29/1992 | WO1992009175A1 Method and apparatus for modulating and dectecting a subcarrier signal for an inductively coupled transponder |
| 05/26/1992 | US5117369 DTMF receiver |
| 05/26/1992 | CA1301967C Multi-task state machine signalling translator |
| 05/20/1992 | EP0486331A2 Digital distribution apparatus |
| 05/19/1992 | US5114356 Connecting block for the telecommunication and data technology |
| 05/16/1992 | CA2055169A1 Digital distribution apparatus |
| 05/13/1992 | EP0485245A2 Digital distribution frame module |
| 05/12/1992 | CA1300722C Remote cable pair cross-connect system |
| 05/07/1992 | DE4114844C1 Telephone subscriber line distributor circuit - uses short-circuit elements replacing overvoltage diverters between each line wire and earth |
| 05/07/1992 | DE4034832A1 Optical communications cable connection system - has stacked modules each receiving coupling field groups for different cable conductor groups |
| 05/06/1992 | EP0420843A4 Paging system with commands for changing functionality of a paging receiver |
| 05/06/1992 | EP0394339A4 Acknowledge back pager with adaptive variable transmitter output power |
| 05/06/1992 | CA2053653A1 Digital distribution frame module |
| 05/05/1992 | US5111497 Alarm and test system for a digital added main line |
| 05/05/1992 | US5111200 Broadband space-division switching network with linkage in a printed circuit board having multi-layer micro-strip lines |
| 05/05/1992 | US5111161 Pll with lock detector for detecting a specified signal in a plurality of input signals |
| 04/29/1992 | CN2103227U Improved telephone connection |
| 04/28/1992 | US5109409 Apparatus and method to detect telephony signaling states |
| 04/28/1992 | CA1299710C Automated matrix for communication line connections |
| 04/28/1992 | CA1299698C Shorted-coaxial-cable detector for local-area networks |
| 04/22/1992 | EP0481170A2 Subscriber interface for a fiber optic communications terminal |
| 04/22/1992 | EP0401223A4 Paging system with dynamically programmable reception frequencies |
| 04/22/1992 | CN1016390B Data path checking system |
| 04/21/1992 | US5107532 Automated documentation system for a communications network |
| 04/21/1992 | CA1299276C Jack module with lamp assembly |
| 04/16/1992 | DE4032865A1 Screw mounted wiring guide for telecommunications distribution - has threaded element inserted through slot to provide fixing to surface |
| 04/15/1992 | EP0480260A2 Digital multifrequency receiver for communication exchange |
| 04/15/1992 | EP0480129A2 Voice/voice band data discrimination apparatus |
| 04/15/1992 | EP0193537B1 Microcomputer controlled locking system |
| 04/14/1992 | CA1298907C Jackfield with split-front panel |
| 04/11/1992 | CA2053059A1 Distributor for use in communication systems |
| 04/08/1992 | EP0408557A4 Paging system lata switch |
| 04/02/1992 | DE4030804A1 Distribution block for telecommunication plant e.g. telephone exchange - has one isolating contact projecting at front and other at near side for seldom altered lines |
| 04/02/1992 | DE4030444A1 Distributor for telephone and telecommunications exchange - has U=shaped contacts, facing operating side with cutting edge clamps |
| 04/01/1992 | EP0477651A1 Telecommunication installations distribution block for connection of incomming and outgoing conductors |
| 04/01/1992 | CN1060001A Alarm and test system for digital added main line |
| 03/29/1992 | CA2052326A1 Distributor strip for telecommunication systems for connecting incoming and outgoing lines |
| 03/26/1992 | DE4030312A1 Modular distributor for connecting incoming and outgoing conductors |
| 03/26/1992 | DE4030207A1 Optical waveguide distribution frame - has subdivided loop region in which additional cylindrical turning elements of large dia. on crossbars ensure correct curvature of fibres |
| 03/25/1992 | EP0476590A1 Connection strip for wiring having high reliability |
| 03/25/1992 | EP0402358A4 Paging system sublocal switch |
| 03/24/1992 | US5099498 Method for suppressing quantization noises superimposed on a sinusoidal audible tone transmitted in a digital telecommunications exchange system |
| 03/19/1992 | WO1992004795A1 Dtmf signal detection apparatus for a voice store and forward equipment |
| 03/19/1992 | WO1992004794A2 Alarm and test system for a digital main line |
| 03/18/1992 | CN2099419U German type plug of telephone |
| 03/11/1992 | EP0474172A2 Telephone line monitoring apparatus and method |
| 03/10/1992 | CA1297207C Plug-in card module |
| 03/04/1992 | CN2098133U 25 return wire type telephone exchange box module |
| 03/04/1992 | CN1015769B Error correction method in swtich and switch provided with error correction means |
| 02/25/1992 | US5091904 General signaling service unit of electronic switching system |
| 02/19/1992 | EP0471216A2 Method for testing the line connection before switching-over from a telephone exchange which is to be disabled, to a new digital exchange ready to be put into operation |
| 02/11/1992 | CA1295750C Terminal switching unit for a plurality of maintenance systems |
| 02/08/1992 | CA2022750A1 Dialing pulse signature recognizing method and device |
| 02/04/1992 | US5086462 Terminal repeater having a function for repeating DC loop signal |
| 02/04/1992 | US5086456 Dial unit detachably mounted on public telephone for equal access |
| 02/04/1992 | US5086368 Connector bank with voltage surge protection |
| 02/04/1992 | US5086348 System for connecting optical lines to a wideband telecommunications exchange |
| 01/28/1992 | US5083941 Multiple telephone jack slide assembly having resilient closed channel |
| 01/15/1992 | EP0466224A1 A method and device for supervising and testing majority voting |
| 01/15/1992 | CN1057937A Double side automatic wire stripping terminals connecting box |
| 01/14/1992 | CA1294346C Telephone system for connecting a customer to a supplier of goods |
| 01/11/1992 | WO1992001357A1 A method and a device for supervising and testing majority voting |
| 01/08/1992 | EP0465178A2 Device for detecting a plurality of frequencies sent from an exchange |
| 01/08/1992 | EP0465089A2 Automated channel test unit |
| 01/07/1992 | US5078624 Digital signal cross-connect module |
| 12/31/1991 | US5077735 Method and an apparatus for mutually converting different signaling systems |
| 12/24/1991 | US5074801 Modular jack patching device |
| 12/18/1991 | EP0461454A2 Distribution device |
| 12/17/1991 | US5073941 Multifrequency detection |
| 12/17/1991 | CA1293306C Electrical bridging link for connecting terminals within a terminal device |
| 12/12/1991 | DE4017962A1 Connecting digital communication network to analogue network - starting time generator on each digit from subscriber to starting exchange of digital network |
| 12/11/1991 | CN2090598U Shell of rf signal transmission adapter |
| 12/11/1991 | CN1015078B Terminal connectors for pair-cable in electrocommunication system |
| 12/10/1991 | CA1293060C Method and apparatus for voice detection having adaptive sensitivity |
| 12/04/1991 | EP0459467A2 Telephone system for transmitting either a dial pulse or a dual-tone multi-frequency signal along a telephone line |
| 12/03/1991 | US5070526 Signal analyzing system |
| 11/27/1991 | EP0458710A1 Telephone system with a plurality of telephone terminals on a single line |
| 11/27/1991 | CN1014950B System for connecting optical lines to wideband telecommunications exchanger |
| 11/26/1991 | CA1292585C Ground start circuit |
| 11/21/1991 | EP0456987A1 Terminal block for telecommunications |
| 11/12/1991 | US5065424 Apparatus for servicing telephones from a remote location |