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| Number | Title | Issue Date |
| 5793760 | Method of multiplexing and a multiplexer A pure ATM based multiplex is incapable, especially at low carrier rates, of satisfactorily carrying constant bit rate traffic or/human communication traffic. A multiplex format having a plurality of constant bit rate timeslots in which a timeslot is not ... | 08/11/1998 |
| 5787077 | Dynamic connection mapping in wireless ATM systems A wireless communication system for asynchronous transfer mode includes the dynamic mapping of ATM cells on a wireless ATM link into a unique Virtual Path on a wired ATM link, and in the reverse direction as well. The access point includes a radio medium ... | 07/28/1998 |
| 5784558 | Method and apparatus for testing of extended ISDN BRI service An enhanced ISDN-DP transmission device of the present invention allows for testing of ISDN-protocol communication paths using an existing DDS-protocol test infrastructure. The ISDN-DP unit receives a DDS test command and determines whether the command wa... | 07/21/1998 |
| 5777997 | Method and system for transmitting audio-associated text information in a multiplexed transmission stream A method and system for transmitting audio-associated text information in a multiple-channel transmission stream is disclosed herein. The method includes the steps of receiving text information associated with a song, formatting the information into song ... | 07/07/1998 |
| 5774460 | Local ISDN radio transmission system A local ISDN transmission system has a central base station and a number of subscriber radio terminals greater than the number of communication channels. The system is connectable to subscriber ports through an S0 wireless transmission interfac... | 06/30/1998 |
| 5774539 | Communication system having switchably-coupled subscriber terminals A communication system includes subscriber terminals which can be coupled via at least one switch, and to which subscriber terminals, several call numbers can be assigned for which telecommunication parameters are definable. The subscriber terminals each ... | 06/30/1998 |
| 5771236 | Method for increasing ISDN channel capacity of TDM serial communication link for digital subscriber line channels An overhead bit-usurping multiplexing/demultiplexing mechanism increases the overall effective ISDN channel-conveying capacity of a serial digital data communication link, and thereby enables a terminal site channel bank to provide ISDN service to an addi... | 06/23/1998 |
| 5768361 | Flexible enhanced signaling subsystem for a telecommunications switch The Flexible Enhanced Signaling Subsystem (FESS) performs table-driven processing of incoming and outgoing messages and also handles multiple message types and trunk groups. A message received by the FESS is first processed by an incoming signaling module... | 06/16/1998 |
| 5761293 | ISDN communication system and method thereof A network interface (105) uses valid identifiers including the DN, SPID and Switch ID to communicate with a PSTN (110) and uses generic identifiers to communicate with customer premise equipment (120) in order to establish an ISDN communication link when ... | 06/02/1998 |
| 5761207 | Multiplex communication system using variable multiframe format In a multiplex communication system, D-channel control signals are stored in respective buffers and data quantity of the control signals is detected. The buffers are read according to the detected data quantity and a format control signal is produced corr... | 06/02/1998 |
| 5761294 | Method and system for connecting a digital phone limited to analog transmissions A method and system of enabling incoming and outgoing call capability for a digital telephone that is limited to analog transmissions include providing a converter that locally supports the protocol of the digital telephone, but that converts digitized si... | 06/02/1998 |
| 5757792 | Mobile communication system and a method of communication mode transition A mobile communication system which enables any combinations of communication of speech signal and data signal to perform even during telephone communication is realized. In a mobile communication system provided with a base station control apparatus bein... | 05/26/1998 |
| 5754555 | Subscriber network arrangement for connecting subscribers to a telephone network A subscriber network arrangement for connecting several subscribers to a telephone network, in which the subscriber network includes (a) several subscriber sets and, (b) several subscriber terminals. To one subscriber terminal is connected at least one su... | 05/19/1998 |
| 5751339 | Television conversation/monitoring system changing transmission capacity responsive to state change in remote location A television conversation/monitoring system connecting a central station and a plurality of terminal stations through an ISDN line. The central station has a picture/sound conversation/monitoring device, a picture input/output device, a sound input/output... | 05/12/1998 |
| 5748628 | ISDN D-channel signaling discriminator The present invention is a software implementation for the processing of ISDN signaling protocol independent of the equipment type and vendor variations of the CCITT Q.921/Q.931 protocol specification with which it is connected, including at least one lay... | 05/05/1998 |
| 5748625 | Inter-LAN connection method using ISDN Inter-LAN connection using an ISDN, in which two LANs are connected to each other by an inter-LAN connection apparatus through the ISDN, includes using, as the ISDN, an INS net 64, for example, for providing at least two B channels and one D channel. The ... | 05/05/1998 |
| 5734653 | Cell/ packet assembly and disassembly apparatus and network system A cell/packet assembly and disassembly apparatus is provided for efficiently connecting a line in a line switching system to an ATM network or a packet network, without causing congestion, to transmit and receive cells or packets therebetween. The cell/pa... | 03/31/1998 |
| 5724355 | Network access to internet and stored multimedia services from a terminal supporting the H.320 protocol Internet access is provided to a multimedia terminal (101, 102, 103, 104) supporting the H.320 protocol through a gateway server (125) that is connected to the Internet. The data stream of the H.320 bearer channel (ISDN phone line or switched 56 kbps faci... | 03/03/1998 |
| 5721729 | Universal input call processing system The present invention is directed to an apparatus and method that provides a universal call processing system to process all possible data types transmitted over an ISDN telephone line. A universal call processing system generally comprises an ISDN interf... | 02/24/1998 |
| 5719855 | Digital telephone switching system having plural terminal devices directly connected to a common digital line A plurality of digital telephones 2A, 2B are provided in direct multiple connection with a digital line 4 introduced from a private branch exchanging system. Each of the digital telephones 2A, 2B sends a burst signal containing its own telephone call data... | 02/17/1998 |
| 5717690 | Coordination and control of data streams that terminate at different termination units A method for coordinating and controlling multiple data streams representing a data transmission session that terminate in different termination units (such as network access servers). The data streams are transmitted over two or more links, collectively ... | 02/10/1998 |
| 5708663 | ISDN terminal adapter for use with external modem and employing software-based serial communication framing for ISDN `D` channel signaling An ISDN terminal adapter is capable of providing both digital and analog communication connectivity between a customer's data terminal equipment (DTE) and a digital communication link. The adapter includes a digital (ISDN) communication transceiver for tr... | 01/13/1998 |
| 5706280 | Transmission quality monitoring system for a digital communication network A digital communication network has a first end office which includes a first multiplexer unit and a second end office which includes a second multiplexer unit. The network performs transmission and reception of multiplexed signals between the first end o... | 01/06/1998 |
| 5703876 | ATM transport system The invention is an ATM transport system that transports user information from a continuous signal transport system. The ATM transport system uses telecommunications signaling associated with the continuous signals to determine if the continuous signals a... | 12/30/1997 |
| 5694398 | Network termination and network termination arrangement of a telecommunications network A network termination (NT) with a network interface (UKO), several subscriber interfaces (SO 1, SO 2), a control unit (CPU) and an internal bus (IBUS) is indicated for a telecommunications network. Information is transmitt... | 12/02/1997 |
| 5687176 | Zero byte substitution method and apparatus for telecommunications equipment An interface circuit is provided for implementing zero-byte substitution (ZBS) in a channel unit or line card which couples a digital subscriber line, such as a basic or primary rate Integrated Services Digital Network (ISDN) line, to a T1 network or othe... | 11/11/1997 |
| 5648971 | Communication apparatus providing improved information on the states of data channels In a communication system having a plurality of communication apparatus connected to at least one line, each communication apparatus has detection circuitry for detecting a call signal from the line to other communication apparatus and inform circuitry fo... | 07/15/1997 |
| 5638373 | ISDN interface unit An ISDN interface unit interconnects a data processing unit, an ISDN, and an analog telephone and includes a DMA request signal generation circuit for generating a DMA request signal from an 8 kHz clock signal from an ISDN line. In accordance with the req... | 06/10/1997 |
| 5636202 | Test system for detecting ISDN NT1-U interfaces The invention is a test method for testing ISDN interfaces from a remote location. The test method of the invention applies predetermined energy signals to the tip and ring leads of the customer subscriber line in a prescribed sequence, delays 10 to 100 m... | 06/03/1997 |
| 5631901 | Method of transmitting control signals and PBX system A large amount of control information is transmitted at high speed to a telephone terminal without changing the transfer capacity of a current control channel. When a call is terminated by any of the extension terminals, the extension terminal sends, for ... | 05/20/1997 |
| 5632017 | Telecontrollable communication system having a remote transmission module A communication system equipped with a central computer means is connected to a service central via a communication network, for example, a telephone network of ISDN network, for telecontrol thereof. For the information exchange between the service centra... | 05/20/1997 |
| 5629931 | Information transmission system In an information transmission system, in particular a telephone system, the subscribers can be connected to a dial exchange over a line. At the dial exchange end and at the subscriber end of the line are connected bidirectional multiplexers or demultiple... | 05/13/1997 |
| 5615213 | Message transmission using out-of-band signaling channel In a communication network having multiple transmission channels, digital data comprising messages sufficiently short to be treated as packet messages are not sent over the network channels ordinarily used for message transmission, but instead are sent ov... | 03/25/1997 |
| 5612990 | Digital wireless interface for a base station for establishing communication between a plurality of digital radio channels and a plurality of digital wireline circuits An apparatus for establishing communication between one or more digital radio channels and one or more digital wireline signals over the digital radio channels, comprising an r.f. unit for transmitting and receiving circuits, a digital interface unit conn... | 03/18/1997 |
| 5610922 | Voice plus 4-wire DDS multiplexer A method and apparatus 200 for transferring analog voice telephone signals and digital data service signals simultaneously from a telephone company location to a customer premises over a single twisted pair telephone line 205. The present apparatus 200 in... | 03/11/1997 |
| 5602837 | Multiplex system for a personal handy phone system Disclosed is a personal handy phone system subjected to improvements over the prior art system by disposing an ADPCM/PCM converter necessarily required in a base station on an exchange side, notifying error information utilizing each slot, performing inte... | 02/11/1997 |
| 5600655 | Calling method for communication terminal device Method and device can be provided which can establish two or more communication channels for a called terminal having different called addresses for different channels by a single calling address. When keys are input in the order of "0014723244*3245#" for... | 02/04/1997 |
| 5600654 | Multiple call offering method for use with an analog station and an ISDN station that share a directory number A call offering method for use when a directory number is shared by an analog station and an ISDN station. The ISDN station has multiple call appearances of the shared directory number that are linked logically to multiple analog station states that corre... | 02/04/1997 |
| 5600709 | Telephone set for an integrated services digital network (ISDN) A digital-line telephone unit having two sets combined in one housing with partially shared circuitry. The unit connects directly to an integrated services digital network (ISDN) and includes both a handset with connection cord and a cordless set. A singl... | 02/04/1997 |
| 5598411 | ISDN terminal adapter capable of automatically changing from a packet switching mode to a circuit switching mode In an ISDN terminal adapter where both data communication by packet switching and data communication by circuit switching can be established, after data communication by packet switching is established, a time when no response is received is counted. When... | 01/28/1997 |
