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| Number | Title | Issue Date |
| 7336656 | Method for handling incoming calls directed to a virtual communication service subscriber via a shared line system A method of handling incoming calls directed to a virtual communication subscriber is disclosed. An incoming call intended for the virtual communication subscriber is received at a communication device. A call is placed to the communication device using contact info... | 02/26/2008 |
| 7330502 | Input/output circuit and semiconductor integrated circuit An input/output circuit includes a reference clock generator configured to generate a reference clock. A signal transmitter is configured to transmit serial data in synchronization with one of the reference clock and a test clock. A signal-receiving circuit is confi... | 02/12/2008 |
| 7289615 | Private branch exchange and private branch exchange control method A private branch exchange changes the load distribution according to the use condition by a main control unit and a sub-control unit. A line card comprises a first module group normally carrying out various operations in response to an instruction of the sub-control... | 10/30/2007 |
| 7274787 | Scheduled return to queue with priority (SRQP) A system and method of distributing contact volume in a contact center when the volume of incoming calls greatly exceeds the number of agents currently answering calls. In an embodiment of the invention, the caller calling in at such a peak time is notified of the r... | 09/25/2007 |
| 7254641 | Digital multimedia contact center with tier escalation and deescalation in response to changed criteria A tiered service model for a digital multimedia contact center assigns an entering contact to an initial service tier based on routing criteria for the contact and may escalate or de-escalate the contact to a different service tier if the routing criteria changes. T... | 08/07/2007 |
| 7230946 | Remote agent access method to a VoIP contact center where high QoS is not supported A system and method of providing remote agent access to a voice over internet protocol contact center by allowing an agent to login to the contact center with a data circuit through a remote data access device such as a VPN device are disclosed. The system and metho... | 06/12/2007 |
| 7158614 | Metallic test access for xDSL connectors A metal port block is used on an intermediate distributor or vertical terminal block in a connection architecture to obtain a metal contact of the combined voice and data signals, which can subsequently be monitored by a test rack, without needing to disconnect or r... | 01/02/2007 |
| 7082125 | Communication model for linecard modems A communication system is provided for transferring data through a digital switching network. The communication system includes a client modem, a linecard in communication with the client modem over a local loop, and a linecard modem interfacing with the linecard an... | 07/25/2006 |
| 7068758 | Integrated metallic access for high port density DSLAM A multi-services access platform is presented for supporting metallic test access in switching or multiplexing devices such as digital subscriber line access multiplexers (DSLAMs). The multi-services access platform includes a chassis within which a predetermined nu... | 06/27/2006 |
| 7057475 | Ferrite choke An apparatus to filter noise from being induced into a power line. In one a ferrite choke is disclosed that filters noise from being induced into a power line. The ferrite choke includes a tube of ferrite, a supply power line and a return power line. The tube of fer... | 06/06/2006 |
| 7050571 | Telephone wire distribution center A telephone distribution center for organizing, labeling, and coupling multiple paired input telephone wires to multiple output telephone wires. Paired input lines can be coupled to respective pairs of punch down terminal strips. Each punch down terminal strip is an... | 05/23/2006 |
| 6870832 | Telecommunications provider agent The invention is a provider agent product and method that operates as a software interface between a telephony card and a session manager in an advanced communications network. The provider agent receives event messages from the telephony card indicating on-hook eve... | 03/22/2005 |
| 6807262 | Central office control of receive and transmit handset volume A switch based feature that allows subscribers to adjust their incoming or outgoing audio signal strength. The value of the transmit or receive pad values on the subscriber line card are adjusted to control the strength of the audio signal transmitted to, or receive... | 10/19/2004 |
| 6807261 | Digital key telephone set and digital key telephone system A clock generating circuit generates a clock of a rate corresponding to a Dch rate in response to a specification from the exterior. A counting circuit detects completion of reception of one frame by counting the clock number up to “11” at timing at which a star... | 10/19/2004 |
| 6760419 | Method and apparatus for interfacing a drive-thru intercom system with a telephone system A method and system for interconnecting a telephone system and an intercom system. In one exemplary embodiment, telephone switchgear is connected to a telephone interface which provides separate voice transmit and receive channels. For example, an E&M tie line modul... | 07/06/2004 |
| 6738463 | Splitter assembly with inverted pots and line connectors A telecommunications device including a plurality of splitter cards mounted within a chassis. The device also includes a circuit board and a plurality of card edge connectors for providing electrical connections between the splitter cards and the circuit board. The ... | 05/18/2004 |
| 6681001 | Computer integrated telecommunications systems and methods Computer integrated telecommunication systems are disclosed that provide a message exchange interface that transfers data and control requests generated by applications running on a computer system directly to a telecommunications unit that is adapted to ... | 01/20/2004 |
| 6668047 | Key telephone system and maintenance method therefor There is described a key telephone system which enables rewriting of the main program of the key telephone system, recovery of the key telephone system from a failure, and maintenance of the key telephone system such as diagnosis in an immediate, flexible... | 12/23/2003 |
| 6563924 | Subscriber matching circuit for electronic exchange A hybrid subscriber matching circuit for an electronic exchange which matches transmitted/received data so as to permit call communications between the exchange and subscribers. The subscriber matching circuit is constructed by individual parts without us... | 05/13/2003 |
| 6195423 | Two line voice/data switch A multi-line telephone switch device wherein relays added to a routing switch automatically route incoming calls on a plurality of lines to predetermined devices based upon the distinctive rings or tones present on the lines. A number of relays can be add... | 02/27/2001 |
| 6128300 | Line card with modem interace An apparatus and methods for communicating data over a voice-band communications loop are disclosed. The apparatus includes transceiver circuitry, a backplane interface, backplane interconnection circuitry, and signaling circuitry. The transceiver circuit... | 10/03/2000 |
| 6115459 | Telephone switching system for easily implementing modification of connection information and medium storing telephone system control program A telephone switching system 10 comprises a plurality of physical ports 20, and switches removable terminals based on predetermined connection information, wherein such connection information is arranged to be capable of being stored and rewritten in a RA... | 09/05/2000 |
| 6046995 | Key telephone system without common control A multi-line key telephone system not having a key service unit includes three analog telephone lines to which multiple telephone stations may be connected for enhanced communications between stations. Each station is connected by a modem to a single tele... | 04/04/2000 |
| 5912957 | Technique for reconnecting office line to key telephone system after power failure A power failure shunting office line restoring circuit includes: a first relay having an office line tip port connected to a common port for connecting the tip port of the office line to a separate emergency telephone or a key telephone office line accomm... | 06/15/1999 |
| 5832071 | Electronic patching system for telecommunications devices An electronic patching system includes a first plurality of ports connected to the terminations of a plurality of telephone and data lines from the utility central office, and a second plurality of ports wired to a plurality of telecommunications devices.... | 11/03/1998 |
| 5652788 | Key telephone apparatus One of the internal key telephone sets coupled to a key telephone apparatus capable of automatic call distribution operates as a supervisor and other operate as agents. Under the automatic call distribution, the statuses of the agents and their number are... | 07/29/1997 |
| 5640448 | Key telephone system capable of simulation by button operations Execution of guide simulation of the button operation is accompanied with the display of the button operation procedure and also the indication of the fact that a key telephone is actually used or a tone is being generated. The simulation state is first s... | 06/17/1997 |
| 5513179 | Private branch exchange and line card to be used in such a private branch exchange A line card (1) in a private branch exchange (1) accommodates interfaces (1) which switch standard output frames on a system bus. These standard output frames contain control data in addition to subscriber data. As a result, the system frame of the system... | 04/30/1996 |
| 5471523 | Telephone call and voice processing system The present invention provides a novel method and apparatus for interconnecting a telephone call and voice processing system ("CVPS") with a telephone key system control unit ("KSU"). A plurality of digital feature telephone ports of the KSU are connected... | 11/28/1995 |
| 5465256 | Telephone cross connect status signal pre-processor A signalling pre-processor for receiving signalling from a line card of a telephone line. The pre-processor converting analog signalling into digital form and integrating the digital signal to remove noise spikes which would otherwise appear as false traf... | 11/07/1995 |
| 5388153 | Apparatus and method for detecting telephone line status Telephone line status indication is improved by making measurements of the differential voltage across the Tip-Ring terminals of a telephone set. The telephone set is connected to a telephone line which is shared with other parallel-connected sets. The me... | 02/07/1995 |
| 5369700 | Multi-function telephone apparatus and control method This disclosure relates to a multi-function telephone apparatus and a control method therefor. When an application program (hereinafter referred to as program) stored in an IC card is executed, a state of the program execution and an incoming/outgoing cal... | 11/29/1994 |
| 5224159 | Key telephone system provided with telephone sets connectable to add-on modules Disclosed is a key telephone system provided with a key service unit (KSU) 1 having a central control unit 6, and a digital key telephone set (DKT) 10 having a local control unit 13 for communications of control data with the central control unit 6. First... | 06/29/1993 |
| 5151934 | Key telephone apparatus The present invention relates to a key telephone apparatus. In accordance with the present invention, a port for connecting terminal devices comprises two pairs having four wires, one pair having two wires of which is connected to a digital terminal devic... | 09/29/1992 |
| 5097501 | Key telephone interface Apparatus is disclosed for use in a key set interface to overcome the incompatibility between key sets and tip and ring devices. The interface apparatus rejects ringing voltage and tip and ring loop current intended to be supplied on a first pair of condu... | 03/17/1992 |
| 4953200 | Private branch exchange capable of discriminating different types of telephone sets connected thereto A private branch exchange for use with different types of telephone sets comprises a current detection device such as a photo-coupler for detecting a current flowing through a data line connecting to a multifunction telephone set to discriminate among dif... | 08/28/1990 |
| 4935957 | Key telephone system A key telephone system has an oscillation preventing circuit comprising a termination impedance element, said circuit is a switching element and connected between the ground and another circuit which includes an impedance compensating circuit, therein. Th... | 06/19/1990 |
| 4887293 | Trunk circuit with loop length gain equalization A key telephone system comprised of a key service unit connected to a plurality of local sets via four-wire conductors for providing full duplex signal communication between the key service unit and sets. Signals are carried by a first pair of each of the... | 12/12/1989 |
| 4796294 | Electronic telephone exchange and method of connecting ports of the exchange In an electronic telephone exchange and a method of connecting ports of the exchange, highways connected to a time switch is divided into extension highways and office line highways and thus highways are connected to discrete terminals of a connector form... | 01/03/1989 |
| 4763354 | Key telephone system A key telephone system comprising a key service unit and a plurality of key telephone sets is configured by this invention so as to permit use of IC cards which are adapted to admit user data for registration therein, to be inserted in any of the key tele... | 08/09/1988 |
