| Patents for H04Q 1 - Details of selecting apparatus or arrangements (11,745) |
|---|
| 06/23/1987 | US4675896 Remote monitoring apparatus |
| 06/23/1987 | US4675895 Test adapter tools for telephone cutover system |
| 06/16/1987 | CA1223055A1 Cable distribution head with lsa-plus termination technique |
| 06/10/1987 | EP0225084A2 Line Access apparatus |
| 06/10/1987 | EP0225083A2 Line access apparatus for in-band communication |
| 06/09/1987 | US4672603 Combined analog/digital CCIS data transmitter/receiver circuit |
| 06/02/1987 | US4670897 Circuit testing of telephone grids or the like |
| 06/02/1987 | US4670626 Cross connect frame for digital signals |
| 06/02/1987 | US4669803 Antenna feeder-connecting terminal for a television |
| 05/27/1987 | EP0223546A2 Telephone line access apparatus |
| 05/26/1987 | US4669114 Digital tone detector |
| 05/26/1987 | US4669110 Call progress tone system |
| 05/21/1987 | DE3602730C1 Distribution box for telecommunications cables |
| 05/20/1987 | EP0222083A1 Method and apparatus for voice detection having adaptive sensitivity |
| 05/20/1987 | CN86106494A Adaptive resistance-trap filter |
| 05/19/1987 | US4667272 Replacement protector block for telephone circuits |
| 05/13/1987 | CN86105106A Connecting block for digital system cross-connect frame |
| 05/12/1987 | US4665546 Modular distribution frame assembly |
| 05/06/1987 | EP0220884A2 Insulation displacement connector terminal block |
| 05/05/1987 | US4662701 Single communication line interconnect |
| 04/29/1987 | EP0219917A2 Switching device with fault correction |
| 04/22/1987 | EP0218861A2 Adaptive stop-notch filter |
| 04/14/1987 | US4658422 Building entrance telephone terminal box |
| 04/14/1987 | US4658420 Tone responsible disabler circuit for an echo canceller |
| 04/14/1987 | US4658418 Multiple telephone jack slide assembly |
| 04/14/1987 | CA1220586A1 Apparatus for multifrequency signalling tone detection |
| 04/08/1987 | EP0217555A2 Telecommunication switching system |
| 04/08/1987 | EP0217131A2 Method for detecting the temporal characteristics of selecting pulses, independent of the length of the subscriber connecting lines |
| 04/01/1987 | EP0216488A2 Digital signal processor |
| 04/01/1987 | EP0216251A1 Device for the individual type-marking of signalling information translator building groups |
| 04/01/1987 | EP0216250A1 Method for taking over signalization data words of a plesiochronic multiplex signal in a signalization signal convecting exchange. |
| 03/31/1987 | US4654743 Transient voltage protector |
| 03/25/1987 | EP0215440A1 Signalling information translation centre for a TDM transmission system |
| 03/24/1987 | US4653092 Telephone main distribution frame cutover system |
| 03/24/1987 | US4653043 Pre-cutover verification of switching system subscriber lines served via digital carrier facilities |
| 03/24/1987 | US4652070 Insulation displacement connector terminal block |
| 03/24/1987 | CA1219690A1 Apparatus for detecting in-band single frequency signaling tones from fdm channels |
| 03/18/1987 | EP0084562B1 Multi-tone signal generator |
| 03/17/1987 | US4651340 Telephone entrance terminal and network interface |
| 03/17/1987 | US4650933 Jack and test plug |
| 03/11/1987 | EP0213846A2 Waveform generation method |
| 03/11/1987 | EP0213822A2 Signal generators |
| 03/11/1987 | EP0213651A1 Receiving equipment for the recognition of a number of different and predetermined frequency combinations of voice-frequency signalling components under the protection of a spurious-signal/voice-signal guard function |
| 03/10/1987 | US4649236 Digital system connect frame |
| 03/04/1987 | EP0212632A2 Subscriber line interface circuit |
| 03/04/1987 | EP0212398A2 Method for detecting MFC signals superposed with perturbing signals |
| 03/03/1987 | US4647725 Indoor type telephone network interface device |
| 02/26/1987 | EP0116625A4 Multiple simultaneous tone decoder. |
| 02/17/1987 | US4644476 Dialing tone generation |
| 02/17/1987 | US4644345 Interleaved dual bank encoder |
| 02/17/1987 | CA1218137A1 Telephone cable encapsulating splice housing |
| 02/12/1987 | WO1987001004A1 Method and apparatus for providing a ground reference for telephone customer special circuits powered from a floating battery feed |
| 02/12/1987 | WO1987000994A1 Nationwide radio paging system |
| 02/12/1987 | EP0193537A4 Microcomputer controlled locking system. |
| 02/10/1987 | US4641754 Quick connect frame |
| 02/10/1987 | CA1217842A Failure detection apparatus for use with digital pads |
| 02/10/1987 | CA1217819A Apparatus and method for generating multi-digit codes |
| 02/03/1987 | US4641338 Unitary telephony frame arm extender |
| 02/03/1987 | US4641225 Distributor frame for low-current electrical circuits formed from channels |
| 01/29/1987 | WO1987000717A1 A telephone line switch |
| 01/28/1987 | EP0209822A2 Connecting block for digital system cross-connect frame |
| 01/28/1987 | EP0209741A2 Terminal block for a telecommunication installation |
| 01/27/1987 | US4639553 Call signal detecting device |
| 01/21/1987 | EP0208926A2 Plug-in unit with protective electrical elements for a distribution frame |
| 01/20/1987 | EP0116069A4 Bi-vertical main distributing frame connector. |
| 01/15/1987 | DE3525566A1 Circuit arrangement for identifying earth key functions in telephone switching systems |
| 01/15/1987 | DE3524658A1 Covering strip for distributor components |
| 01/14/1987 | EP0208141A2 Waveform generators |
| 01/13/1987 | CA1216690A1 Telephone line circuit having time-shared dtmf receivers |
| 01/08/1987 | DE3523804A1 Distributor for telecommunications switching systems |
| 01/07/1987 | EP0107074B1 Process for the suppression of quantification noise superposed on a sinusoidal audible tone at the transmission in a digital telecommunication exchange |
| 01/06/1987 | US4634209 Modular plug connector |
| 01/06/1987 | CA1216380A1 Digital tone detector |
| 12/10/1986 | EP0204675A2 Modular distribution frame including protector modules adapted for break access testing |
| 12/10/1986 | EP0203938A1 Interswitch line circuit |
| 12/03/1986 | EP0134217B1 Activation of a transmission link by code sending |
| 12/03/1986 | EP0131591B1 Activation in a digital subscriber connection |
| 12/02/1986 | US4626629 Digital multifrequency signal receiver |
| 12/02/1986 | US4626628 Telephone line circuit having time-shared DTMF receivers |
| 11/18/1986 | US4623884 Transmission line control system with by-pass control |
| 11/18/1986 | US4623760 Signaling protocol interface channel unit |
| 11/12/1986 | EP0200883A2 Cable termination unit |
| 11/05/1986 | CN85108662A Digital loudspeaking telepnone |
| 10/22/1986 | EP0198203A1 Method for connection-testing of a broad-band switching network |
| 10/21/1986 | US4618194 Connecting block for digital system cross-connect frame |
| 10/21/1986 | CA1212999A1 Universal paging device with power conservation |
| 10/15/1986 | EP0197433A2 Switching system having a tone trunk and method for generating digital codes therein |
| 10/14/1986 | US4617427 Square root circuit |
| 10/14/1986 | US4616897 Network interface device |
| 10/08/1986 | EP0134229B1 Borsht/slic auto balancing technique |
| 10/07/1986 | US4616288 Surge voltage protection means for attachment to a main distribution frame |
| 09/30/1986 | US4614909 Apparatus for identifying digital multi-frequency signals |
| 09/30/1986 | US4614844 Telephone service checking terminal |
| 09/30/1986 | US4614840 Telecommunication line circuit and associated polarity reversal circuit |
| 09/23/1986 | US4613732 Interface module with modular jack for telecommunications systems |
| 09/23/1986 | CA1211875A1 Tone generator |
| 09/17/1986 | CN85109222A Interswitch line circuit |
| 09/10/1986 | EP0194177A1 Subscriber line interface circuit with a reduced power monitoring mode |
| 09/10/1986 | EP0194123A2 Modular distribution frame with protector structure and module for use therein |
| 09/10/1986 | EP0193967A1 Method for connection-testing of a broad-band switching network |