Having Switching Station Patents (Class 379/93.14)
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Patent number: 6801533Abstract: A system and method for for proxy signaling in a digital subscriber line access multiplexer (DSLAM) is disclosed. The method comprises receiving an indication from a customer premesis equipment that the customer premesis equipment requires a switched virtual connection to a public network. The method further includes recognizing that the customer premesis equipment does not have signalling capability. The method further includes negotiating through a proxy signalling agent located on the DSLAM with the public network on behalf of the customer premesis equipment. A switched virtual connection is established between the proxy signalling agent and the public network. A cross connect is established between the switched virtual connection and the customer premesis equipment such that the customer premesis equipment can communicate with the public network through the switched virtual connection.Type: GrantFiled: December 9, 1999Date of Patent: October 5, 2004Assignee: Cisco Technology, Inc.Inventor: Mohan Jonathan Barkley
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Patent number: 6763097Abstract: A communication system includes a plurality of subscribers having a telephone set and different types of home modems coupled using twisted pairs to a local server that includes a plurality of downstream repeaters, a central office coupled to a local server using twisted pair subscriber lines. The central office includes a telephone switch that provides telephone service to the subscribers and a concentrator that connects a plurality of upstream repeaters with a number of office modems that provide data service to the subscriber. A communication system uses CAP or DMT line signals with time division. The line signal transmits with different time framing. Every subscriber line can work in one of three operation modes Asymmetrical mode, Half-Asymmetrical mode, and Symmetrical mode.Type: GrantFiled: April 12, 2001Date of Patent: July 13, 2004Assignee: Coppergate Communications Ltd.Inventor: Roman Vitenberg
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Patent number: 6757380Abstract: An impedance blocking filter circuit is used in telecommunication systems for interconnecting between incoming telephone lines carrying Digital Subscriber Line (DSL) signals and a customer's terminal equipment in order to block impedances above a desired frequency. The impedance blocking filter circuit includes a low pass filter circuit having at least one capacitive pole providing component. The impedance blocking filter circuit also includes a tank circuit coupled in series with the at least one capacitive pole providing component to provide impedance matching for the customer's terminal equipment.Type: GrantFiled: July 13, 2001Date of Patent: June 29, 2004Assignee: CSI/Suttle Apparatus CorporationInventors: Ronald L. Fredrickson, Donald A. Ward, Brett I. Utesch
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Patent number: 6718020Abstract: Switchable POTS-splitter for separating a voice signal from a data signal having a high pass filter for the data signal and a low pass filter for the voice signal and for a ringing signal which is generated by a ringing signal generator of a central office and switched by means of a signal feeding switch to the low pass filter for a transmission to a remote transmission unit via a ring line, wherein the low pass filter comprises at least one capacitor and a corresponding capacitor switch for switching said capacitor to the ring line when the ringing signal is transmitted.Type: GrantFiled: April 12, 2002Date of Patent: April 6, 2004Assignee: Infineon Technologies AGInventors: Peter Caldera, Roland Haeusler
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Patent number: 6707909Abstract: A terminal adapter or a private branch exchange modulates a calling party number received from a digital subscriber line and sends a modulated signal to an analog terminal in the OFF period of a ringing signal or before the ringing signal is sent.Type: GrantFiled: October 20, 2000Date of Patent: March 16, 2004Assignee: Canon Kabushiki KaishaInventor: Yutaka Inoue
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Patent number: 6697465Abstract: A computer controlled communications switch for use at a communications center having an agent interface unit for conducting communication calls to and from an agent over both a telephone network and a computer network. The computer controlled communications switch comprises a switching unit having first and second states. When the switching unit is in the first state, the switching unit connects the agent interface unit to the telephone network, and when the switching unit is in the second state, the switch connects the agent interface unit to the computer network The switching unit is controlled by a computer including a predetermined program so that the switching unit is in the first state when a call is made to or from the agent interface unit via the telephone network, and the switching unit is in the second state when a call is made to or from the agent interface unit via the computer network.Type: GrantFiled: June 23, 1998Date of Patent: February 24, 2004Assignee: MCI Communications CorporationInventor: Raymond G. Goss
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Patent number: 6690718Abstract: An asymmetric digital subscriber line transceiver unit-card (ATU-C) and a method of controlling the same. The ATU-C includes: a power supply unit; a plurality of modems to be connected to a plurality of asymmetric digital subscriber line transceiver unit-remote (ATU-R) for subscribers; a plurality of power switches for selectively supplying power generated by the power supply unit to the modems; and a microprocessor for controlling the operation of the power switches depending on the connection status between the subscribers and the modems.Type: GrantFiled: November 24, 1999Date of Patent: February 10, 2004Assignee: Samsung Electronics Co. Ltd.Inventor: Heung-soo Kim
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Patent number: 6678718Abstract: A system is provided for establishing a connection between a telephone agent and a computer user. A request is received from the user requesting a return call by an agent. The request is received through a web server and includes an identifier associated with the web page being viewed by the user. The identifier associated with the web page is transmitted to an agent that will contact the user. This allows the agent to view the web page that was being viewed by the user when the request was entered. A telephone connection is then established between the user and the agent. An agent can be selected based on the content of the web page being viewed by the user at the time the request for agent contact is entered. Additionally, for an incoming call, a web page can be generated that contains information about the incoming call. An identifier associated with the generated web page is transmitted to an agent that will answer the call. The agent then accesses the web page using the received identifier.Type: GrantFiled: August 29, 1997Date of Patent: January 13, 2004Assignee: Aspect Communications CorporationInventors: Joseph F. Khouri, Michael L. Mack, Gautam Sinha
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Patent number: 6658096Abstract: Disclosed is a local loop interceder which interfaces between the local loop and the central office and which provides access to the public switched telephone network (PSTN). The local loop interceder establishes a first signal pathway from the local loop to the PSTN and a second signal pathway from the local loop to a high speed data modem. The local loop interceder alternates between the first and second pathways depending upon whether the end user desires voice or data communication on the local loop. In a second embodiment, the high speed data modem is a simultaneous voice and data (SVD) modem. In such case, the local loop interceder provides a third signal pathway from the SVD modem to the PSTN for voice communication which is demodulated from a simultaneous voice and data signal received by the SVD modem through the second signal pathway.Type: GrantFiled: October 30, 2001Date of Patent: December 2, 2003Assignee: Paradyne CorporationInventors: Gordon Bremer, Thomas Bingel
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Patent number: 6598082Abstract: In an arrangement where users are connected to an ISP through a bank of modems, a time-out threshold is then selected for the user based on the user's connection pattern. The threshold is varied dynamically in response to access patterns, in an attempt to trade the benefit accrued by using the ISP's modem and phone line for a shorter period of time, against the inconvenience to the user from having to reestablish a connection to the ISP. Specifically, the time interval between the last disconnection by the user and the time of reconnection is evaluated, and when this time interval is shorter than a preselected threshold, then the time-out threshold is increased. When this time interval is longer than the preselected threshold, then the time-out threshold is decreased. Typically, when the time-out threshold is decreased, it is decreased by a significantly smaller amount that the amount by which it is increased, when it is increased.Type: GrantFiled: August 30, 2002Date of Patent: July 22, 2003Assignee: AT&T Corp.Inventors: Frederick Douglis, Thomas Joseph Killian
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Patent number: 6563821Abstract: A remote communications server system enables multiple remote users simultaneous access to a network through a segmented design that distributes the processing of the connections among a combination of buses and processors. The system coordinates a plurality of independent communications links bonded together into a single channel to create a virtual connection to the network having a bandwidth greater than the individual links. The system supports a mixture of physical and multiplexed communication links and allows the intermixing of different types of links in a bonded channel. The system is scalable in that segments can be added as needed and the number of lines handled by a segment can be increased.Type: GrantFiled: September 29, 1998Date of Patent: May 13, 2003Assignee: Multi-Tech Systems, Inc.Inventors: Kevin Hong, Damodar Bhat, Narasimhan Sundarraajan, Satish Mugulavalli
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Patent number: 6553105Abstract: The present invention is directed to a remotely actuated splitter bypass function (RASB) working in conjunction with a test head at the central office for testing and maintaining copper loops in the digital subscriber line environment. The RASB allows a competitive local exchange carrier to test and maintain the xDSL portion of the copper loop with minimal interference and disturbance to/from the plain old telephone system (POTS) service by bypassing the central office splitter. The splitter bypass operation includes the steps of selecting a copper loop pair for testing, actuating a first relay for monitor mode, actuating a second relay for bypass mode, testing the selected copper loop, and resetting the first and second relays back to normal mode. By applying positive and negative voltages from the tip and ring with respect to ground, various relays can be set (actuated) and reset to provide multiple modes of operations.Type: GrantFiled: April 30, 2002Date of Patent: April 22, 2003Assignee: Turnstone Systems, Inc.Inventors: Ramon C. W. Chea, Jr., P. Kingston Duffie
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Patent number: 6553106Abstract: An alphanumeric messaging system for exchanging alphanumeric messages over a communications connection. The alphanumeric messaging system comprises a communications circuitry, an alphanumeric telephone, and a switching system. The communications circuitry is configured to originate a communications connection in response to receiving a stimulus and exchange alphanumeric messages over the communications connection. The alphanumeric telephone configured to originate a call connection and exchange the alphanumeric messages over the call connection. The switching system is configured to establish the communications connection and the call connection and exchange the alphanumeric messages for the alphanumeric telephone and the communications circuitry.Type: GrantFiled: December 27, 1999Date of Patent: April 22, 2003Assignee: Avaya Technology Corp.Inventors: Kevin W. Gould, Gary L. Griffith, Majid Ressalei, Wilfred E. Lehder
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Patent number: 6526046Abstract: A gateway for communicating telecommunication information between a telecommunication network and customer premises equipment includes a telecommunication interface and a packetization module. The telecommunication interface receives first telecommunication information for a first subscriber and second telecommunication information for a second subscriber.Type: GrantFiled: April 24, 2001Date of Patent: February 25, 2003Assignee: General Bandwidth Inc.Inventor: A. J. Paul Carew
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Patent number: 6480583Abstract: A method for providing information services to display the character information on terminals by a PBX through an ISDN, the method comprising the steps of registering a subscriber's request of character information services according to a given menu by connecting a specified port to the ISDN, determining whether corresponding terminal is registered for the character information services upon receiving a service message, and transferring the service message to be displayed in characters on the registered terminal.Type: GrantFiled: December 27, 1999Date of Patent: November 12, 2002Assignee: Samsung Electronics Co., Ltd.Inventor: Tae-Gyu Kim
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Patent number: 6480582Abstract: The invention enables a telephone subscriber to be advised via his telephone line of the arrival of a new e-mail. This is achieved by the e-mail server informing the point of presence (POP) of a subscriber to the Internet of the presence of mail, the POP passing this information to the local exchange of the subscriber, which in turn informs the subscriber of the presence of mail.Type: GrantFiled: November 24, 1999Date of Patent: November 12, 2002Assignee: Siemens AktiengesellschaftInventors: Joachim Ungruh, Silvia Krob, Hendrik Kurzawa, Christian Schmidt, Thomas Lange, Andreas Lindenthal
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Patent number: 6477595Abstract: A digital subscriber line (DSL) multiplexer is used in conjunction with a DSL modem to provide a reliable high speed connection for an end-user. The scaleable DSL multiplexer supports multiple DSL modems to a number of subscriber desiring increased bandwidth. The connection is reliably maintained by the multiplexer which utilizes a proprietary protocol to exchange management information to monitor the connection.Type: GrantFiled: April 11, 2000Date of Patent: November 5, 2002Assignee: E-Cell TechnologiesInventors: Michael S. Cohen, K. C. Babu, R. Balasubramanyam, Murali Ramanathan, P. K. Nanda Kumar
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Patent number: 6456702Abstract: An apparatus (and method) for connecting a first network and a second network operating at different clock frequencies to transfer data between them, includes a first interface to the first network, a second interface to the second network, a buffer memory connected to the first interface for storing data to be transferred, a clock converter connected between the buffer memory and the second interface performing a clock conversion according to a controlled clock signal corresponding to the first network and an extracted clock signal from the second network, a buffer monitor for monitoring an amount of data stored in the buffer memory and producing a buffer status signal, and a clock adjuster for adjusting the controlled clock signal depending on the buffer status signal.Type: GrantFiled: January 24, 2001Date of Patent: September 24, 2002Assignee: NEC CorporationInventor: Kaneyuki Nishihara
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Publication number: 20020131568Abstract: The present invention is directed to a remotely actuated splitter bypass function (RASB) working in conjunction with a test head at the central office for testing and maintaining copper loops in the digital subscriber line environment. The RASB allows a competitive local exchange carrier to test and maintain the xDSL portion of the copper loop with minimal interference and disturbance to/from the plain old telephone system (POTS) service by bypassing the central office splitter. The splitter bypass operation includes the steps of selecting a copper loop pair for testing, actuating a first relay for monitor mode, actuating a second relay for bypass mode, testing the selected copper loop, and resetting the first and second relays back to normal mode. By applying positive and negative voltages from the tip and ring with respect to ground, various relays can be set (actuated) and reset to provide multiple modes of operations.Type: ApplicationFiled: April 30, 2002Publication date: September 19, 2002Inventors: Ramon C.W. Chea, P. Kingston Duffie
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Patent number: 6434169Abstract: A relay device associated with each end point modem in a data communication network provides a system for transporting data over a communication channel employing voice compression. Each relay device exchanges relevant parameter information with its associated modem and with each other in order to negotiate compatible data transfer conditions. The protocol exchange between each relay and its associated modem will typically include the calculation of inter-loop delay values for echo cancellation and line probing for line equalization or bandwidth optimization. Supported data rates, modulation type and encoding information is also exchanged. The invention provides a system for full duplex transmission of data over modems while saving on bandwidth because of voice compression techniques.Type: GrantFiled: October 31, 1997Date of Patent: August 13, 2002Assignee: Alcatel Canada Inc.Inventor: Eric Verreault
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Patent number: 6434225Abstract: A communication support system includes a switching unit which connects a telephone unit through a transmission path to a telephone network when the switching unit is set in a first state, and disconnects the telephone unit from the telephone network by cutting off the transmission path when the switching unit is set in a second state. A ringer detection unit detects a ringer signal from the telephone network. A determination unit determines, in response to the detection of the ringer signal, whether the switching unit is to be set in one of the first state and the second state in accordance with first switching control data. A switching control unit controls setting of the switching unit in one of the first state and the second state in response to a control signal, indicative of the determination, sent by the determination unit.Type: GrantFiled: September 10, 1998Date of Patent: August 13, 2002Assignee: Fujitsu LimitedInventors: Toshihiro Azami, Katsutoshi Yano, Jun Kakuta, Tomoyoshi Takebayashi, Kimikazu Furukawa, Yasuo Satoh
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Patent number: 6430199Abstract: A method and system for distributing broadband digital and telephone signals arriving at a subscriber's home simultaneously over existing in-house four wire quad cable. The combined telephone and broadband signals entering the house are split upon entering the house and the broadband signals are converted to a locally generated broadband digital signal whose power spectral density is not distorted by recovery of the telephone signal, such as a 10Base-T signal. The locally generated combined broadband digital signals and telephone signals are distributed to broadband transceivers where the telephone signals and broadband digital signals are applied to telephones and broadband service termination devices, respectively.Type: GrantFiled: March 27, 1998Date of Patent: August 6, 2002Assignee: Telcordia Technologies, Inc.Inventor: Kenneth James Kerpez
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Patent number: 6430273Abstract: A system for providing a bi-directional digital subscriber line connection to a network includes a digital subscriber line access multiplexer with a pool of digital subscriber line modems, and switching logic connecting customer premises to the modem pool. The switching logic has more inputs than outputs, and is configured to share access to the modem pool among the inputs on a per-session basis. A session has a dedicated modem connection to the network to provide a limited number of simultaneous dedicated digital subscriber line bi-directional connections to the network.Type: GrantFiled: March 10, 2000Date of Patent: August 6, 2002Assignee: U.S. West, Inc.Inventor: Robert C. Shaheen
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Patent number: 6408056Abstract: Disclosed is a local loop interceder which interfaces between the local loop and the central office and which provides access to lie public switched telephone network (PSTN). The local loop interceder establishes a first signal pathway from the local loop to the PSTN and a second signal pathway from the local loop to a high speed data modem. The local loop interceder alternates between the first and second pathways depending upon whether the end user desires voice or data communication on the local loop. In a second embodiment, the high speed data modem is a simultaneous voice and data (SVD) modem. In such case, the local loop interceder provides a third signal pathway from the SVD modem to the PSTN for voice communication which is demodulated from a simultaneous voice and data signal received by the SVD modem through the second signal pathway.Type: GrantFiled: February 26, 1998Date of Patent: June 18, 2002Assignee: Paradyne CorporationLargoInventors: Gordon Bremer, Thomas Bingel
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Patent number: 6396911Abstract: A method and apparatus are provided for efficient improved data transmissions on telephone links between service providers and remote clients. The method and apparatus perform the steps of receiving an analog encoded data signal, selectively routed by a switch which is communicatively connected to a set of central office switch assembly codecs, and performing a high precision, synchronized analog to digital conversion while the signal is relatively close to a phone company central office switch assembly. The signal is transferred to output circuitry used to transmit signals on phone company subscriber lines. The signal is converted back to an analog signal prior to its final transmission to a subscriber client modem. In an embodiment of the invention, the high precision, synchronized analog to digital conversion is performed by a client-type modem and the output is transferred to a server-type modem which transmits the converted signal, in digital form, over a pair gain system.Type: GrantFiled: April 15, 1999Date of Patent: May 28, 2002Assignee: Charles Industries, Ltd.Inventors: Dean Anthony Kostan, Avinash K. Vaidya, Patrick I. Lazar, Juan Ramon Uribe, Louis Poirier, Xiaoyue Zhong, Yamel Torres
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Patent number: 6396910Abstract: A method and apparatus are provided for improved data transmissions on telephone links between service providers and remote clients. The method and apparatus perform the steps of receiving an analog encoded data signal and performing a high precision, synchronized analog to digital conversion while the signal is relatively close to a phone company central office switch assembly. The signal is transferred to output circuitry used to transmit signals on phone company subscriber lines. The signal is converted back to an analog signal prior to its final transmission to a subscriber client modem. In an embodiment of the invention, the high precision, synchronized analog to digital conversion is performed by a client-type modem and the output is transferred to a server-type modem which transmits the converted signal, in digital form, over a pair gain system.Type: GrantFiled: March 1, 1999Date of Patent: May 28, 2002Assignee: Charles Industries, Ltd.Inventors: Patrick I. Lazar, Avinash K. Vaidya, Juan Ramon Uribe, Louis Poirier, Dean Anthony Kostan, Xiaoyue Zhong, Yamel Torres
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Publication number: 20020044644Abstract: To enable the simple and satisfactory connection of a plurality of telephone sets, data communication devices and similar to a single telephone line. A telephone set comprises a telephone circuitry portion, connected to a telephone line via switching means; an external equipment terminal, connected to the telephone line via switching means; line capture detection means which detects capture of the telephone line by a device connected to the external equipment terminal; and control means, which causes the first switching means, to be disconnected while the line capture detection means detects line capture, causes the second switching means, to be disconnected while telephone line capture by the telephone circuitry portion is detected, and causes the switching means to all be in the connected state when neither line capture is detected.Type: ApplicationFiled: August 28, 2001Publication date: April 18, 2002Inventor: Yoshihito Ichiyama
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Patent number: 6285747Abstract: The telecommunications apparatus has telephone terminal devices (3) that are constructed to be operable fully and completely by a connected computer via a telephone exchange unit. The computer (2) generates operating signals for full and complete operation of the telephone terminal devices (3), which are connected with the computer only through the telephone exchange unit. The computer (2) is connected with the telephone exchange unit (1) by means of a standard data link and the telephone exchange unit (1) is equipped so that the operating signals from the computer are converted for transmission in a telephone channel (B channel) connecting the telephone terminal devices (3) to the telephone exchange unit.Type: GrantFiled: May 19, 1999Date of Patent: September 4, 2001Assignee: Robert Bosch GmbHInventor: Reiner Haack
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Publication number: 20010015974Abstract: An apparatus (1) interconnecting selectively at least one data based apparatus with at least one telecommunications device.Type: ApplicationFiled: February 20, 2001Publication date: August 23, 2001Inventors: Xavier Penet, Dominique Poupaert
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Publication number: 20010014147Abstract: Call data signals actuated by a telephone terminal are provided from a telephone communication system to indicate call data as the called number, the calling number and the calling equipment. The call data signals address related control functions for selectively interfacing a live operator terminal or a multiple format multiple port data processing system. The interface connection involves providing a specific format as for automated processing or to prompt an operator. Screening tests and format selection are performed to make a determination. Individual telephone terminals and individual data formats are arranged and interfaced under controlled conditions specified by the call data. Time tests, history tests and demographic tests may be executed in addition to basic selection and qualification tests. Control may be executed from active data storage for assembled control words and record words. Record words for individual calls may be stored along with developed data.Type: ApplicationFiled: May 24, 1999Publication date: August 16, 2001Inventor: RONALD A KATZ
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Publication number: 20010007822Abstract: A pager communications system which allows a pager message to be delivered to a pager from an initiating telephone without incurring long distance or time dependent charges, where an autopage switch having direct inward dial numbers delivers a particular preprogrammed message to a particular preprogrammed pager number in response to receipt of a call to one of the direct inward dial numbers.Type: ApplicationFiled: February 26, 2001Publication date: July 12, 2001Inventor: Jackson M. Jobe
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Patent number: 6259774Abstract: A telephony call center system comprises an Internet connection adapted for receiving data from a WEB server, the data originating from the computer platform of a person browsing the Internet, including data identifying the browsing person, such as a telephone number, and indicating to the WEB server a desire of the browsing person to communicate with an agent at the call center. The communication desired may be (a) a request for an agent at the call center to receive a telephone call from the browsing person, or (b) a request for a call to be placed to the browsing person from the call center. In both (a) and (b) the practical result is a telephone conference between the browsing person and an agent at the call center. In the first instance (a), in response to the data from the WEB server to the call center, the call center provides to the WEB server, for transfer to the browsing person via the Internet, a telephone number of a routing point at the call center.Type: GrantFiled: May 19, 2000Date of Patent: July 10, 2001Assignee: Genesys Telecommunications Laboratories, Inc.Inventor: Alec Miloslavsky
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Patent number: 6215868Abstract: A terminal adapter or a private branch exchange modulates a calling party number received from a digital subscriber line and sends a modulated signal to an analog terminal in the OFF period of a ringing signal or before the ringing signal is sent.Type: GrantFiled: March 5, 1998Date of Patent: April 10, 2001Assignee: Canon Kabushiki KaishaInventor: Yutaka Inoue
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Patent number: 6173044Abstract: A gateway enables point to multipoint connectivity from voice, data, or SVD clients over voice and data networks. The gateway connects one or more known voice networks (e.g. telephone networks) and one or more data networks (e.g. LANs, WANs, and internet) so that clients on either network may access any of the networks via various devices like analog telephones, data modems, SVD modems, or direct data network connections (e.g., ethernet, token ring). The gateway has connections to both the data network(s) as well as the voice network(s). The gateway is capable of splitting a signal with both voice and data streams and routing either and/or both of these streams over the voice network alone, the data network, or both. A process, executing on the gateway enables the gateway to establish connections on gateway paths and to control and direct a flow of voice and data information between the destinations on these networks.Type: GrantFiled: February 6, 1996Date of Patent: January 9, 2001Assignee: International Business Machines CorporationInventors: Peter Dirk Hortensius, Leon Lumelsky, Anand Narasimhan
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Patent number: 6169788Abstract: A communication server includes a modem pool (652) that comprises a plurality of XDSL modems (660). The communication server also includes a plurality of line interface modules (650). Each line interface module (650) has a plurality of inputs each coupled to a twisted pair data line and has a plurality of outputs each coupled to one of the XDSL modems (660). Each line interface module (650) operates to detect a need for data service on a requesting twisted pair data line and to couple the requesting twisted pair data line to an output associated with a selected XDSL modem (660). A controller (653) is coupled to the XDSL modems (660) and to the plurality of line interface modules (650). The controller (653) operates to select one of the XDSL modems (660) in response to a detected need for data service.Type: GrantFiled: October 30, 1998Date of Patent: January 2, 2001Assignee: Cisco Technology, Inc.Inventors: John F. McHale, James R. Sisk, Robert H. Locklear, Jr., Jason McCullough, Clifford L. Hall, Ronald E. Ham