| Patents for H04Q 1 - Details of selecting apparatus or arrangements (11,745) |
|---|
| 07/19/1984 | WO1984002816A1 Activation of a transmission link by code sending |
| 07/19/1984 | WO1984002815A1 Activation in a digital subscriber connection |
| 07/17/1984 | US4460808 Adaptive signal receiving method and apparatus |
| 07/17/1984 | US4460806 Dual tone multifrequency and dial pulse receiver |
| 07/10/1984 | US4459435 Telephone privacy apparatus |
| 07/04/1984 | EP0112728A1 Subscriber telephone system |
| 06/21/1984 | WO1984002443A1 Guard tone capture method |
| 06/19/1984 | US4455617 Multiple simultaneous tone decoder |
| 06/19/1984 | US4455456 Digital supervisory circuit for a telephone system |
| 06/12/1984 | US4454477 Loop current detector with threshold setting impedance |
| 06/07/1984 | WO1984002240A1 Apparatus for providing tone signals in terminals for a digital telecommunnication system |
| 06/05/1984 | US4452502 Wire connector for telecommunications cables |
| 05/29/1984 | CA1168327A1 Connector assembly for pcm cables |
| 05/02/1984 | EP0107074A1 Process for the suppression of quantification noise superposed on a sinusoidal audible tone at the transmission in a digital telecommunication exchange |
| 05/01/1984 | CA1166729A1 Logic device for alarm pretreatment |
| 05/01/1984 | CA1166728A2 Fault monitoring and diagnostic system for telephony switching system |
| 04/04/1984 | EP0104512A1 Terminal block |
| 04/03/1984 | US4440979 Current sink for DPT channel unit |
| 03/27/1984 | US4439826 Diagnostic system for a distributed control switching network |
| 03/27/1984 | US4439639 Digital circuit and method for the detection of call progress tones in telephone systems |
| 03/26/1984 | EP0091932A4 Telephone switching control arrangement. |
| 03/26/1984 | EP0084562A4 Multi-tone signal generator. |
| 03/20/1984 | CA1164059A1 Binary detecting and threshold circuit |
| 03/15/1984 | WO1984001044A1 Multiple simultaneous tone decoder |
| 03/06/1984 | US4435620 Dial pulse delay circuit |
| 03/01/1984 | WO1984000867A1 Adaptive signal receiving method and apparatus |
| 02/28/1984 | CA1163027A1 Digital frequency transmitter for a telecommunication auto-switch |
| 02/14/1984 | US4431872 Telecommunication receivers |
| 02/02/1984 | WO1984000446A1 Bi-vertical main distributing frame connector |
| 01/25/1984 | EP0099128A2 Circuit for delivering direct current signalisation signals to a signalisation signal convertor |
| 01/24/1984 | CA1161168A1 Digital code word detection |
| 01/11/1984 | EP0098064A1 A method of transporting and positioning a load |
| 01/11/1984 | EP0097754A1 Tone detector and multifrequency receiver using this detector |
| 01/11/1984 | EP0097753A1 Tone receiver for a digital data transmission system |
| 01/10/1984 | CA1160329A1 Distribution frame |
| 01/03/1984 | US4424498 For use with a telephone line |
| 01/03/1984 | CA1159977A1 Commutator with several layers of crossing points |
| 12/20/1983 | US4422121 Line protector for a communications circuit |
| 12/20/1983 | US4421965 Commutator with several layers of cross-points |
| 12/13/1983 | CA1158790A1 Gain control apparatus for digital telephone line circuits |
| 12/13/1983 | CA1158758A1 Enclosure for outdoor cross-connect system for telecommunications |
| 12/07/1983 | EP0095539A1 Line protector for a communications circuit |
| 11/29/1983 | CA1157977A2 Automatic calling methods and apparatus |
| 11/24/1983 | WO1983004156A1 Dual tone multifrequency and dial pulse receiver |
| 11/22/1983 | CA1157554A1 Telephone distribution frame connector assembly |
| 11/15/1983 | CA1157134A1 Receiver for push-button pcm encoded multifrequency signals |
| 11/08/1983 | CA1156749A1 Signal control system |
| 11/02/1983 | EP0093054A1 Process for the realization of the connections of a telephone distributor |
| 11/02/1983 | EP0092807A2 A digital supervisory circuit for a telephone system |
| 10/27/1983 | WO1983003732A1 Apparatus for identifying digital multi-frequency signals |
| 10/26/1983 | EP0091932A1 Telephone switching control arrangement. |
| 10/25/1983 | US4412299 Phase jitter detector |
| 10/25/1983 | CA1155985A1 Digital pushbutton signalling receiver |
| 10/18/1983 | US4410982 Arrangement for extending digital signaling to telephone subscribers' substations |
| 10/18/1983 | US4410225 Universal connector kit |
| 10/05/1983 | EP0090134A1 Programmable fine frequency detector |
| 10/04/1983 | CA1154839A1 Miniature matrix programming board |
| 09/20/1983 | US4405187 Connector assembly for PCM cables |
| 09/07/1983 | EP0088062A2 In a module for printed assemblies in a telecommunication system an apparatus for automatically putting the means on printed board assemblies newly inserted into the module into operation |
| 09/06/1983 | US4403298 Adaptive techniques for automatic frequency determination and measurement |
| 09/06/1983 | US4403119 DTMF Activated remote telephone line switching and testing |
| 08/30/1983 | US4401860 Frequency signaling method and apparatus with dynamic compensation for frequency errors |
| 08/23/1983 | CA1152650A1 Pcm and pam conversion circuit including signal level variation on the pcm portion of the circuit |
| 08/23/1983 | CA1152579A1 Device for controlling a digital signal generator |
| 08/16/1983 | US4399536 Convolution filter arrangement for digital multifrequency receiver |
| 08/16/1983 | US4399535 Digital tone generator |
| 08/10/1983 | EP0085558A2 Supervision of automatic switching systems |
| 08/09/1983 | CA1151785A1 Communication system and means for interconnection of same |
| 08/03/1983 | EP0084632A1 Modular connecting strop |
| 08/03/1983 | EP0084562A1 Multi-tone signal generator. |
| 07/26/1983 | US4395595 Digital pushbutton signalling receiver |
| 07/26/1983 | CA1150783A1 Programmable multifrequency tone receiver |
| 07/12/1983 | US4393496 Method for feeding call progress tones into conference connections |
| 07/12/1983 | US4393491 Automatic self-test system for a digital multiplexed telecommunication system |
| 07/05/1983 | US4392206 Printer |
| 07/05/1983 | US4391479 Miniature matrix programming board |
| 06/28/1983 | US4390983 Digital frequency sender |
| 06/28/1983 | US4390921 Line protector and related termination arrangement |
| 06/28/1983 | US4390755 Distribution frame |
| 06/21/1983 | CA1148604A1 Line protector for a communications circuit |
| 06/15/1983 | EP0081294A2 Tone detector |
| 06/14/1983 | US4388715 Alarm preprocessor logic |
| 06/07/1983 | US4387434 Intelligent field interface device for fluid storage facility |
| 05/31/1983 | US4386239 Multifrequency tone detector |
| 05/24/1983 | US4385385 Circuit for monitoring a digital signal generator |
| 05/24/1983 | US4385208 Multifrequency receiver |
| 05/24/1983 | CA1147074A1 Dialing interval transmission gating arrangement |
| 05/17/1983 | US4384175 Tone detection method and arrangement for observing and classifying repetitive status signals |
| 05/17/1983 | US4384172 Telephone equipment distribution panel stand |
| 05/10/1983 | US4383313 Tone generator for PAM/TDM telecommunication system |
| 05/03/1983 | US4382294 Telephone switching control arrangement |
| 04/28/1983 | WO1983001549A1 Telephone switching control arrangement |
| 04/20/1983 | EP0077136A2 Line protector and related termination arrangement |
| 04/19/1983 | CA1145018A1 System for interconnecting subscribers lines to an automatic digital telephone switching system |
| 04/12/1983 | US4380064 Digital audio signal control system for a timedivision switching system |
| 04/05/1983 | US4379347 Receiver for PCM-encoded multifrequency dialing signals |
| 04/05/1983 | CA1144228A1 Protective cable head for a telephone exchange distributor |
| 03/23/1983 | EP0074898A1 Telephone distributing frame column, profile for this column and telephone distributing frame |
| 03/22/1983 | CA1143491A1 Current detection circuit arrangement for an automatic telephone exchange |
| 03/09/1983 | EP0073740A1 Connecting device for interconnecting electrically insulated conducting wires |