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| Number | Title | Issue Date |
| 7397910 | Method and apparatus for providing expanded telecommunications service System and method for putting control of incoming telephone calls in the hands of subscribers with the aid of computer software and the Internet. In effect, a very efficient multiplexer is provided that does not require a change in the behavior of the called party o... | 07/08/2008 |
| 7319693 | Integrate network switching system This invention discloses an integrated exchange system for the terminal edge network connections. The integrated exchange system, comprising an IP packet based switch system and a telephony executive engine, is capable to execute IP and non-IP communication protocol... | 01/15/2008 |
| 7277943 | Devices, software and methods for allocating jitter buffer memory based on network region of network endpoint Devices, software and methods are provided for allocating different amounts of memory of a network communication device as jitter buffer for different channels, such as VoIP connections. The channels are classified according to regions of their endpoints in the netw... | 10/02/2007 |
| 7266841 | Security and communications module The invention provides a module for use in a central service provider interface having access to security system and voice and data communications. The module is configured to allow the security system to seize the telephone line when necessary to indicate a securit... | 09/04/2007 |
| 7200153 | Method and apparatus for autosensing LAN vs WAN to determine port type An apparatus and method for automatically detecting the port type of a remote device are disclosed. One embodiment of the apparatus includes a data rate detection unit to sample a data rate from an incoming data signal. A first frequency configuration unit is operat... | 04/03/2007 |
| 7197342 | Radio telecommunications network, user equipment and method of operation Battery operated user equipment is disclosed for use in a radio telecommunications network, including means for monitoring the state of charge of the battery and means for communicating state of charge data to a base station during call set up. The battery da... | 03/27/2007 |
| 7174004 | Network based method and apparatus for supporting interoperability between incompatible TTY devices The present invention is directed to providing compatibility between teletype telephone devices. In particular, embodiments of the present invention alter the described duration of tones used to encode individual characters generated in accordance with a first proto... | 02/06/2007 |
| 7167469 | Method for eliminating multiple modulation and demodulation of Voice band Data communication over packet and low data rate digital networks A method of processing Voice band Data in a communication path in a telecommunication network. The communication path consists of a plurality of Voice band Data relay gateways, including a first Voice band Data relay gateway, a last Voice band Data relay gateway, an... | 01/23/2007 |
| 7136532 | FGS decoder based on quality estimated at the decoder A method for decoding a stream of data includes the steps of: identifying a relationship (100) between quality of a decoded image and a bit rate for decoding the image; selecting a desired quality (110) of images to be decoded from the stream of data; ... | 11/14/2006 |
| 7130395 | Method and system for reducing cross-talk and avoiding bridged taps The present invention establishes a communications link between a central office (CO) modem and a customer premise equipment (CPE) modem. The CO modem then evaluates the performance of the communications link. Impairments on the communications link are identified ba... | 10/31/2006 |
| 7079488 | Method and apparatus for modifying the bandwidth of an established ATM call in response to an identification of the contents of the call Methods and apparatus are disclosed for changing the bandwidth or other traffic characteristic of an established packet call in response to an identification of the requirements of the call. In one implementation, an integrated access device (“IAD”) is used to c... | 07/18/2006 |
| 7076033 | Bit rate matching system and method A method and system of matching a bit rate to a transmit bit rate used to transmit data on a data link are disclosed. A bit pattern in data received on the data link is detected using a bit rate. Where the detected bit pattern comprises one of a plurality of expecte... | 07/11/2006 |
| 7075903 | Reduced power consumption in a communication device A method for controlling power consumption in a communication device is provided. The method includes powering down a receiver of the communication device for a selected period of time and, when the selected period of time expires, powering up the receiver to check ... | 07/11/2006 |
| 7031381 | Method and apparatus for reducing transmission errors caused by periodic transients in digital subscriber line (DSL) communication systems A transient pre-emptor includes a processor configured to detect transients in a communications system. After the processor detects a transient in the communications system, it causes a data communications equipment to suspend or reduce data transmission during the ... | 04/18/2006 |
| 7000020 | Automatic baud rate detection of null modem unimodem client connection A baud rate detection system and method automatically detects the baud rate at which a client computing device is communicating with a host computer over a serial connection. The host computer is coupled to the client computing device via a serial connection, which ... | 02/14/2006 |
| 6931057 | Method, article of manufacture and system to determine a bit rate of a signal A method, article of manufacture and system to determine a bit rate of a signal is described. ... | 08/16/2005 |
| 6909740 | Modem apparatus, communication control apparatus, communication terminal apparatus and communication control method A communication control apparatus of the present invention detects a procedure signal transmitted from a calling side from signals received in reception section while or after a transmission section, which transmits procedure signals specified in the predetermined R... | 06/21/2005 |
| 6898275 | Method and apparatus for providing expanded telecommunications service System and method for putting control of incoming telephone calls in the hands of subscribers with the aid of computer software and the Internet. In effect, a very efficient multiplexer is provided that does not require a change in the behavior of the called party o... | 05/24/2005 |
| 6882711 | Packet based network exchange with rate synchronization A signal processing system which discriminates between voice signals and data signals modulated by a voiceband carrier. The signal processing system includes a voice exchange, a data exchange and a call discriminator. The voice exchange is capable of exchanging voic... | 04/19/2005 |
| 6865606 | Method for controlling data transmission in a wireless V.24 data transmission system operating between a data terminal and a data transmission device for data telecommunication A method for controlling data transmission in a cordless V.24 data transmission system operated between a data terminal and data communication equipment. The method controls data communication equipment for the purpose of data communication with a first data transmi... | 03/08/2005 |
| 6798869 | Bit rate matching system and method A method and system of matching a bit rate to a transmit bit rate used to transmit data on a data link are disclosed. A bit pattern in data received on the data link is detected using a bit rate. Where the detected bit pattern comprises one of a plurality of expecte... | 09/28/2004 |
| 6782082 | Method and system for reducing cross-talk and avoiding bridged taps The present invention establishes a communications link between a central office (CO) modem and a customer premise equipment (CPE) modem. The CO modem then evaluates the performance of the communications link. Impairments on the communications link are identified ba... | 08/24/2004 |
| 6775550 | Method of inducing ADSL communication device to transmit at downstream signaling rate optimized for extended range ADSL service with auxiliary pots channel over SDSL link An upstream transceiver, coupled to an upstream end of a long haul, single digital subscriber loop of an extended range asymmetrical digital subscriber line communication system, ‘spoofs’ a (co-located) digital subscriber line access multiplexer to reduce its do... | 08/10/2004 |
| 6768771 | Multimode modem with automatic negotiation of operational mode Apparatus and methods for determining an operational mode of a far-end modem are disclosed. Where the multimode modem is a call initiator, a method according to the invention includes transmitting a V.8 ANSam tone to the far-end modem, receiving a respons... | 07/27/2004 |
| 6687370 | Method and an arrangement for securing an ADSL connection To secure an ADSL connection between a first ADSL transceiver (4) in a central office and a second ADSL transceiver (5) on a subscriber's premises on a telephone line (1) between a SLIC (2) in the central office and a telephone (3), a request to the SLIC ... | 02/03/2004 |
| 6675215 | Automatic baud rate detection of null modem unimodem client connection A baud rate detection system and method automatically detects the baud rate at which a client computing device is communicating with a host computer over a serial connection. The host computer is coupled to the client computing device via a serial connect... | 01/06/2004 |
| 6574315 | Method for controlling data transmission in a wireless V.24 data transmission system operating between a data terminal and a data transmission device for data telecommunication In a wireless V.24 data transmission system operating between a data terminal and a data transmission device for data telecommunication having a first data transmission apparatus connected to the data terminal by means of a V.24 cable and a second data tr... | 06/03/2003 |
| 6539081 | Method of establishing signaling rate for single-line digital subscriber link providing extended range ADSL service with auxiliary pots channel An autobaud mechanism is executed by transceivers coupled to opposite ends of a communication loop, such as an extended range SDSL loop, to resolve the maximum data rate that can be supported by the loop, using signal power and quality measurements to fir... | 03/25/2003 |
| 6535589 | Method and apparatus for reducing transmission errors in digital subscriber line (DSL) communication systems The present invention provides a method and apparatus for reducing the number of bit errors that occur in xDSL data transmissions as a result of baseband ringing. It has been determined that the number of bit errors that occur in xDSL data transmissions a... | 03/18/2003 |
| 6122071 | Facsimile apparatus capable of executing communication protocol for identifying type of modem of destination station A data communication apparatus for executing a first communication protocol by a low rate modem and executing data communication by a high rate modem in accordance with the first communication protocol includes a communication protocol unit for executing ... | 09/19/2000 |
| 5963622 | Mode signalling method and apparatus A method for identifying that a data communications device is operable in a predetermined mode. The first step of the method provides for generating a frequency division modulation capabilities signal. The generated signal is limited to a predetermined fr... | 10/05/1999 |
| 5881240 | Method and device for setting speed of data transmission Transmission, speed at which data is transmitted over a digital transmission line between a transmission device and a remote device, is set by transmitting an inquiry command to the remote device at a predetermined transmission speed; receiving, from the ... | 03/09/1999 |
| 5835574 | Dual-tone multi-frequency signal transfer protocol A handshake between sending and receiving devices (10) that exchange DTMF signals across a network (14) is accomplished by having the receiving device send a DTMF ready tone (digit) for a prescribed interval following receipt of a call set-up message rece... | 11/10/1998 |
| 5815288 | Facsimile apparatus with changeable transmission energy level and transmission speed A facsimile apparatus comprises a communication unit for conducting data communication through a public line, and a changing unit for changing a transmission level of a signal transmitted by the communication unit to the line.... | 09/29/1998 |
| 5809110 | Technique of controlling telephone calls An improved system for minimizing toll charges is disclosed wherein line quality is measured and a call is terminated if the line quality is not at an acceptable level to allow for the highest possible bit rates during data transfer or to guarantee a cert... | 09/15/1998 |
| 5805669 | Rate adaptaptive subscriber line ("RADSL") modem and method of operation Existing customer premises wiring can be used with high speed digital modems, such as RADSL modems by using POTS filters in line with each piece of PSTN equipment. Alternatively, an RADSL modem includes a line monitor which detects when a piece of PSTN eq... | 09/08/1998 |
| 5799069 | Method and apparatus for dynamically adapting the clock rate and data transfer rate of phone-line powered modems. Methods and apparatus are disclosed for detecting the amount of the power available from a phone line and for adjusting the clock rate and data transfer rate of a modem or a device that transfers data over the phone line to provide the best possible perfo... | 08/25/1998 |
| 5726765 | Data communication apparatus for setting the baud rate and bit rate of a modem and performing data communication at the set baud rate and bit rate In a data communication apparatus, the baud rate and the bit rate of a modem thereof are set independently of each other according to the condition of data communication. Thus, optimum data communication suited to the line condition can be performed.... | 03/10/1998 |
| 5524048 | Telephone exchange apparatus with facsimile broadcasting facility, and facsimile data broadcasting apparatus In a telephone exchange apparatus or a facsimile data broadcasting apparatus incorporating facsimile communication facility for broadcasting image data to a plurality of facsimile apparatuses, image data is concurrently broadcasted by sharing a single fac... | 06/04/1996 |
| 5517548 | Telecommunication device operating under an enhanced TDD protocol A telecommunication device for the deaf is designed to operate under an enhanced TDD communication protocol. The TDD is capable of communicating with conventional TDDs operating under normal Baudot/Weitbrecht communications, but is also capable of communi... | 05/14/1996 |
