Patents
Patents for H04Q 11 - Selecting arrangements for multiplex systems (43,004)
02/1993
02/17/1993EP0527260A1 Interface unit for supporting the communication between processor systems
02/16/1993US5187710 Method and apparatus for the billing of value-added communications calls
02/16/1993US5187707 Packet data flow control for an isdn D-channel
02/16/1993US5187706 Dual access rings for communications networks
02/16/1993US5187705 Data error detecting apparatus for key telephone system and the detecting method therefor
02/16/1993US5187591 System for transmitting and receiving aural information and modulated data
02/16/1993CA1313717C D channel monitor
02/10/1993EP0527006A2 An optical switching system
02/10/1993EP0526990A2 Module comprising in an ATM exchange connection ports, each transmitting a cell indicative of a destination module in a cell header
02/10/1993EP0526690A2 Synchronous node controllers for switching network
02/09/1993WO1993003568A1 Method of communication
02/09/1993US5185781 Automation of telephone operator assistance calls
02/09/1993US5185742 Transparent signaling for remote terminals
02/09/1993US5185741 Inter-network connecting system
02/09/1993US5185738 Fiberoptic telephone systems
02/09/1993US5185736 Synchronous optical transmission system
02/04/1993WO1993002514A2 Apparatus for high speed data transfer
02/04/1993WO1993002513A1 Basic rate interface
02/04/1993WO1993002511A1 Modular, user programmable telecommunications system with distributed processing
02/04/1993DE4125362A1 Coupler between analog signal communications appts. and subscriber terminal digital transceiver - has adaptor incorporated in connecting line, contg. call switch and multifrequency selector
02/03/1993EP0526106A2 Integrated wireless telecommunication and local area network system
02/03/1993EP0526104A2 Arrangement for controlling shared-buffer-memory overflow in a multi-priority environment
02/03/1993EP0525632A2 Accounting system and method for ATM network and ATM network
02/03/1993EP0525432A2 Method of changing system configuration data in a telecommunications exchange system
02/03/1993EP0525121A1 Distributed protocol for improving the survivability of telecommunications trunk networks
02/03/1993EP0524965A1 Private telephone system with simplified command feature.
02/02/1993US5184350 Telephone communication system having an enhanced timing circuit
02/02/1993US5184348 Isdn multiprotocol communications controller
02/02/1993US5184347 Adaptive synchronization arrangement
02/02/1993US5184345 Enhanced isdn 800 service
02/02/1993CA1313430C Photonic switch architecture utilizing code and wavelength multiplexing
02/02/1993CA1313319C Optical switching system
01/1993
01/28/1993DE4124761A1 Card-type control device for data-processing or transmission - feeds received data to buffer memory, supplies in parallel form to processor for real=time processing
01/27/1993EP0524891A1 Facsimile apparatus functioning in one or another of several modes
01/27/1993EP0524669A2 Digital communication system with programming information by way of the B channel
01/27/1993EP0524623A2 Video telephone
01/27/1993EP0524467A2 Band management system in communication
01/27/1993EP0524350A1 Telecommunication system for transmitting cells through switching nodes interconnected by groups of transmission links
01/27/1993EP0524316A1 Connectionless communication system
01/26/1993US5182753 Method of transmitting signaling messages in a mobile radio communication system
01/26/1993US5182751 Switching system using identical switching nodes
01/26/1993US5182750 Transparent remoting of switching network control over a standard interface link
01/21/1993WO1993001670A1 Device and method for implementing queueing disciplines at high sspeeds
01/21/1993DE4124118A1 Communications network with local exchange connected to integrated services digital network - has multiplexer between analogue subscribers and two-wire terminal coupled to digital exchange
01/21/1993CA2112361A1 Device and method for implementing queueing disciplines at high speeds
01/20/1993EP0523874A2 Method for operating an asynchronous packet bus for transmission of asynchronous and isochronous information
01/20/1993EP0523629A1 Multipoint teleconference system employing H. 221 frames
01/20/1993EP0523626A1 Multipoint teleconference system employing communication channels set in ring configuration
01/20/1993EP0523618A2 Picture codec and teleconference terminal equipment
01/19/1993US5181239 Call tagging user information in a telephonic environment
01/19/1993US5181237 Automation of telephone operator assistance calls
01/19/1993US5181199 Packet switching system
01/13/1993EP0522895A1 Communication control apparatus
01/13/1993EP0522775A2 Adaptive synchronization arrangement
01/13/1993EP0522774A2 Adaptive synchronization arrangement
01/13/1993EP0522773A2 Mobile-telephone system call processing arrangement
01/13/1993EP0522772A2 Wireless access telephone-to-telephone network interface architecture
01/13/1993EP0522748A2 SDH data transmission timing
01/13/1993EP0522725A2 Voice messaging system with voice activated prompt interrupt
01/13/1993EP0522694A2 Protocol analyzer interface
01/13/1993EP0522607A1 A method and an arrangement for synchronizing two or more communication networks of the time multiplex type
01/13/1993EP0522430A2 System for detecting failure in dual bus user network
01/13/1993EP0522391A2 Resource reallocation for flow-enforced user traffic
01/13/1993EP0522318A2 Switching modules for digital signals in asynchronous and synchronous transferring mode
01/13/1993EP0522193A1 Digital switching network
01/13/1993EP0521943A1 Optical component
01/13/1993EP0307401B1 Method and apparatus for providing variable reliability in a telecommunication switching system
01/12/1993US5179587 Digital telecommunications exchange system
01/12/1993US5179556 Bandwidth management and congestion control scheme for multicast ATM networks
01/12/1993US5179552 Crosspoint matrix switching element for a packet switch
01/12/1993US5179548 Self-healing bidirectional logical-ring network using crossconnects
01/12/1993CA1312682C Frame synchronization in a network of time multiplexed optical space switches
01/11/1993CA2073114A1 Sdh data transmission timing
01/09/1993CA2073269A1 Module comprising in an atm exchange connection ports, each transmitting a cell indicative of a destination module in a cell header
01/07/1993WO1993000776A1 Application modularity in telecommunications exchanges
01/07/1993WO1993000775A1 Stored program controlled digital public exchange
01/07/1993WO1993000756A1 Self-healing bidirectional logical-ring network using crossconnects
01/07/1993WO1992021216A3 Device for connecting a computer into a telecommunications network, and a procedure for adapting the bit rate in this device
01/07/1993EP0521529A2 An image encoding and transmitting system
01/07/1993EP0521301A2 Flexible interface system for interfacing different complements of port circuits to a PCM telephony switching system
01/07/1993DE4122276A1 Digital communication system allowing time division multiplexing - sends fault alarm via all other exchange-interconnecting cables if cable fails from first exchange drawing clock signal from this cable
01/06/1993CN1067774A Method for performing continuity check in electronic exchange system
01/05/1993US5177738 Process and a monolithically integrated device for speed adaptation for integrated services digital network (isdn)
01/05/1993US5177737 Multipurpose bus system
01/05/1993US5177735 Private telephone installation architecture
01/05/1993CA1312386C Multi-access device
01/05/1993CA1312366C Automatic call distribution (acd) switching system having distributed processing capability
12/1992
12/30/1992EP0520494A2 System for transmitting data using wavelength division multiplexing
12/30/1992EP0520079A1 Universal subscriber line connection unit for a digital switching exchange
12/30/1992EP0519954A1 Digital data transmission system.
12/30/1992CN1067538A Distributed exchange type relay communication network system
12/30/1992CN1019725B Statistical measurement equipment and telecommunication system using same
12/29/1992US5175777 Optical switching matrix including plural wavelength converting devices
12/29/1992US5175764 Enhanced high voltage line interface circuit
12/29/1992US5175728 Flexible interface system for interfacing different complements of port circuits for a pcm telephony switching system
12/29/1992US5175640 Interleaved receivers
12/29/1992CA1312132C Telephone exchange including service feature apparatus
12/29/1992CA1312131C Electronic telephone apparatus able to supply sync clock signals reliably, and method of controlling the supply of sync clock signals
12/25/1992CA2072171A1 Clock recovery system capable of automatically switching a direction of a clock pulse sequence from one to another
12/24/1992DE4218053A1 ATM transmission e.g. for speech - transmitting narrow band service data bytes which are combined in single signal cell in signal cell exchange system