Signaling (ancillary To Main Information) Patents (Class 370/522)
  • Patent number: 7366192
    Abstract: A method of processing a call with reduced call set-up times using one or more telecommunication networks includes providing one or more preferences for a call associated with a first terminal and a second terminal. The one or more preferences are associated with an initial setup of one or more media channels for the call. The method also includes processing the one or more preferences as a preference message, processing the preference message by an FEA procedure to provide an FEA preference message, and transferring a first framing synchronization flag sequence, the FEA preference message, and a second framing synchronization flag sequence from the first terminal to the second terminal. The method further includes receiving one or more acknowledgement preference messages from the second terminal, completing the initial setup of the one or more media channels, and thereafter, exchanging information between the first and second terminals.
    Type: Grant
    Filed: February 7, 2007
    Date of Patent: April 29, 2008
    Assignee: Dilithium Networks Pty. Ltd.
    Inventors: Marwan A. Jabri, Robert Jongbloed, Albert Wong
  • Patent number: 7366163
    Abstract: A method for providing combined local, toll, toll free services, and number portability, to a calling party originating calls from an IP-based communication devices which are coupled to an IP-based multi-media service provider. The method includes receiving a SIP INVITE message, which includes a multi-media service identifier, at the multi-media provider. The SIP INVITE message represents a call request for a multi-media service. The SIP INVITE message is processed at the multi-media provider for determining if the call request can be satisfied. If the multi-media service provider includes resources for satisfying the call, the multi-media service identifier of the SIP INVITE message is set to a first predetermined state and the call is processed. If the multi-media service provider does not include resources for satisfying the call, the multi-media service identifier of the SIP INVITE message is set to a second predetermined state and the call is processed elsewhere.
    Type: Grant
    Filed: January 27, 2004
    Date of Patent: April 29, 2008
    Assignee: AT&T Corp.
    Inventors: Harish Samarasinghe, Robert Yaeger Peters
  • Patent number: 7362781
    Abstract: Wireless devices and methods employ steganography to convey auxiliary data in addition to audio information. An exemplary application is a battery-powered cell phone, having, e.g., a microphone, a speaker, a modulator, an antenna, and an RF amplifier. The steganographically-encoded auxiliary data can be sent to, and/or sent from, such a device, and used for purposes including authentication, system administration, etc.
    Type: Grant
    Filed: August 7, 2001
    Date of Patent: April 22, 2008
    Assignee: Digimarc Corporation
    Inventor: Geoffrey B. Rhoads
  • Patent number: 7359369
    Abstract: A network device is disclosed. The network device has at least one port to receive modem over network signals. A router routes data associated with the modem over network signals received from an aggregator. The aggregator uncompresses the modem over network signals and sends the data associated with the signals to the router directly without relying upon a digital signal processor.
    Type: Grant
    Filed: July 30, 2002
    Date of Patent: April 15, 2008
    Assignee: Cisco Technology, Inc.
    Inventors: Scott Anthony Boynton, Alex Urquizo, Vincent Todd Grove
  • Patent number: 7359353
    Abstract: Various embodiments are described herein to address the need to have a method and apparatus that improve the resource efficiency of inter-PDSN (142 to 141) dormant mode handoffs. Promptly after the completion of signaling (218) for PPP connection establishment and MIP registration (if supported), as required for an inter-PDSN dormant mode handoff, an access network (AN) 121 expedites the release of communication resources such as the wireless traffic channel, the SCCP connection, and the A8 bearer connection. Thus, in an inter-PDSN dormant mode handoff the packet data session of an MS (101) is promptly transitioned back to the dormant packet data state. This enables communication resources to be freed for other calls and/or handoffs in a more timely manner than is enabled today.
    Type: Grant
    Filed: April 21, 2004
    Date of Patent: April 15, 2008
    Assignee: Motorola, Inc.
    Inventor: Shahab M. Sayeedi
  • Patent number: 7359326
    Abstract: In a Quality of Service system, segments in a TCP session are assigned a priority level. A segment may contain an acknowledgement and data. The system determines if network congestion is detected or anticipated in the segment's priority band or in a higher priority band. When the TCP segment arrives at a network point, the segment is split into an acknowledgement segment and a data segment. The acknowledgement segment is scheduled at a higher QoS priority than the data segment.
    Type: Grant
    Filed: February 5, 2003
    Date of Patent: April 15, 2008
    Assignee: 3Com Corporation
    Inventors: Matthew Harper, Richard J. Dynarski, Timothy G. Mortsolf
  • Patent number: 7359625
    Abstract: A recording medium having content stream data recorded thereon and a recording and reproducing apparatus provided therefor. On the recording medium, content stream data is recorded as a stream object formed of one or more stream object units, each having a predetermined size and one or more stream packs. Each of the stream packs has an application time stamp indicating reproducing time information and a plurality of application packets in which the content stream data is packed. Each of the stream object units, excluding the last stream object unit, has at least one entire application time stamp. Thus, search information on all of the stream object units is correctly obtained, and program searching is carried out without error.
    Type: Grant
    Filed: January 10, 2002
    Date of Patent: April 15, 2008
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Bum-sik Yoon, Sung-wook Park
  • Patent number: 7352780
    Abstract: A method and system for providing signaling byte resiliency across a telecommunications network. Embodiments of the invention create copies of original signaling bytes and transports the copies in addition to the original signaling bytes. Testing is performed at each node in the network to determine the validity of the original signaling bytes, i.e. if the signaling bytes have been corrupted. If original signaling bytes are found invalid, then the copies of the signaling bytes are used as a valid replacement for the corrupted signaling bytes.
    Type: Grant
    Filed: December 30, 2004
    Date of Patent: April 1, 2008
    Assignee: Ciena Corporation
    Inventors: Richard William Conklin, Benjamin Joseph Marsella
  • Publication number: 20080047782
    Abstract: A cable control apparatus having a carrier and one or more trigger points disposed on a cable. A control mechanism controls movement of the cable and has a plurality of sensors to sense the one or more trigger points, and a motor to impart movement to the cable. A first sensor stops the motor and reverses direction of the cable to bring the predator to a base location, a second sensor stops the motor when the carrier reaches the base location, and a third sensor restarts the motor.
    Type: Application
    Filed: August 27, 2007
    Publication date: February 28, 2008
    Inventor: Joseph P. Hally
  • Patent number: 7330443
    Abstract: To provide CTI services or features via a communication channel having a plurality of communication connections, after communication of a request for a CTI service or feature for a selected communication connection, an assignment between a device ID, a connection ID and the requested CTI service or feature is established. A control sequence for setting the requested CTI service or feature is invoked, specifying an assignment identifier designating the assignment between the device ID, the connection ID and the requested CTI service or feature as the transferred parameter. The control sequence invoked is processed with evaluation of the assignment identifier to provide the requested CTI service or feature.
    Type: Grant
    Filed: September 2, 2003
    Date of Patent: February 12, 2008
    Assignee: Siemens Aktiengesellschaft
    Inventors: Claus Rist, Stephan Schaumburg, Michael Volkmann
  • Patent number: 7330542
    Abstract: The present invention relates to a method and system for establishing a connection to a terminal device, wherein a user capability information defining supported types of information streams is set in a compatibility information element within an outband signaling message, and a capability negotiation is performed by transmitting said outband signaling message via an outband control channel. The code or user capability information may be set at the terminal device or at an intermediate network element based on a subscriber profile information obtained from a subscriber database. Thereby, the user capability, such as a multimedia session composition, can be already negotiated or handled during the outband call setup phase, and a corresponding inband negotiation can be avoided.
    Type: Grant
    Filed: December 22, 2000
    Date of Patent: February 12, 2008
    Assignee: Nokia Corporation
    Inventors: Timo Kauhanen, Juha Räsänen, Mark Lybeck
  • Patent number: 7327740
    Abstract: In a telecommunications network, for establishing or modifying a radio connection a node (N1) prepares and sends an AAL2 signaling message (110) for use by a connection admission control function (106) of another node (N2) of the telecommunications network. In accordance with the present invention, the AAL2 signaling message includes a timescale value (112) which represents a timescale over which at least one bit rate value characterizing the radio connection is defined. Including the timescale value (112) in the AAL2 signaling message (110) facilitates more efficient connection admission control by enabling, e.g., bandwidth requirements of radio connections to take into consideration delay requirements. In an illustrated example embodiment, the timescale value (112) is a burst inter-arrival time (BIT) bit value which is a time which elapses between a beginning of two subsequent bursts of AAL2 CPS (Common Part Sublayer) packets.
    Type: Grant
    Filed: May 14, 2002
    Date of Patent: February 5, 2008
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Sándor Rácz, Szabolcs Malomsoky, István Szabó
  • Patent number: 7327703
    Abstract: There is provided a method for setting and clearing a concurrent service between a mobile switching center (MSC) and a base station, to provide a new service while providing an existing service. The base station forms a signaling link for a first service between the base station and the MSC. Upon receipt of a service request signal for a second service from a packet data service network (PDSN) while providing the first service, the base station sends a resource assignment request for the second service to the MSC through the formed signaling link. The MSC then sends a resource assignment approval signal to the base station through the formed signaling link.
    Type: Grant
    Filed: March 15, 2001
    Date of Patent: February 5, 2008
    Assignee: Samsung Electronics Co., Ltd
    Inventor: Yong Chang
  • Patent number: 7324662
    Abstract: A method of embedding watermark data into a two-colour (binary) image includes dividing the image into blocks and assessing the suitability of each block to embed a bit of watermark data by assessing whether or not the flipping of a defined pixel in each block affects the visual attributes of said block in manner to be perceptible by the human eye. Data is only embedded in those blocks determined to be suitable for data embedding, by flipping the defined pixel, as required. A recipient of the document may similarly assess which blocks contain watermark data, by assessing the suitability of each block in the document to embed such data. Conveniently, watermark data may be extracted without further information about the data's location within a document.
    Type: Grant
    Filed: October 4, 2004
    Date of Patent: January 29, 2008
    Assignee: Nanyang Technological University
    Inventors: Alex Chi Chung Kot, Huijuan Yang, Haiping Lu
  • Patent number: 7319746
    Abstract: Each communication terminal of the calling user (Uj-k) is logically connected to a first communication equipment (Sk) and each communication terminal of the called user (Uj?-k?) is logically connected to a second communication equipment (Sk?). The combination of these terminals enables a plurality of modes of communication between these two users. If the called user accepts the setting up of a call: the second communication equipment (Sk?) determines each terminal of the called user that would enable setting up of the requested call; the second communication equipment (Sk?) then sends the first communication equipment (Sk) a terminal identifier for each terminal thus determined; and the first communication equipment (Sk) then selects, from the identifiers of the called user that it receives, at least one terminal identifier, and then initiates the setting up of a call.
    Type: Grant
    Filed: April 16, 2004
    Date of Patent: January 15, 2008
    Assignee: Alcatel
    Inventors: Michel Le Creff, Raymond Gass
  • Publication number: 20080008214
    Abstract: An apparatus for receiving a data broadcast signal and method of processing the same are disclosed, by which a quality of data broadcasting is enhanced. The present invention includes receiving the data broadcast signal including a data broadcast application and information for the data broadcast application, if an exceptional situation of the data broadcast application occurs, creating exceptional situation information indicating the exceptional situation of the data broadcast application, and transmitting the created exceptional situation information for the data broadcast application to an external server.
    Type: Application
    Filed: July 9, 2007
    Publication date: January 10, 2008
    Inventors: Hak Joo Lee, Ji Ho Park
  • Patent number: 7317696
    Abstract: An inband signaling modern communicates digital data over a voice channel of a wireless telecommunications networks. An input receives digital data. An encoder converts the digital data into audio tones that synthesize frequency characteristics of human speech. The digital data is also encoded to prevent voice encoding circuitry in the telecommunications network from corrupting the synthesized audio tones representing the digital data. An output then outputs the synthesized audio tones to a voice channel of a digital wireless telecommunications network.
    Type: Grant
    Filed: March 15, 2002
    Date of Patent: January 8, 2008
    Assignee: Airbiquity Inc.
    Inventors: Dan A. Preston, Joseph Preston, Robert Leyendecker, Wayne Eatherly, Rod L. Proctor
  • Patent number: 7313144
    Abstract: A frame transmission device which does not require a separate supervisory line and enables supervisory frames to efficiently enter subscriber traffic for transmission without securing a fixed bandwidth. A supervisory token computing section gives supervisory frames supervisory tokens as permission to transmit within a minimum bandwidth. Subscriber token computing sections give subscriber frames subscriber tokens as permission to transmit within respective set transmission bandwidths. A best-effort token computing section gives the frames best-effort tokens as permission to transmit by using an extra bandwidth. The supervisory or subscriber tokens are given to read frames from a supervisory queue or subscriber queues, and if a frame queue length is smaller than or equal to the best-effort tokens remains in the queue, a queue read control section reads and outputs the remaining frames from the queue by using the extra bandwidth of best-effort tokens.
    Type: Grant
    Filed: June 15, 2004
    Date of Patent: December 25, 2007
    Assignee: Fujitsu Limited
    Inventors: Daisuke Kobayashi, Hirofumi Yagawa, Toshinobu Tsunematsu, Katsuhiko Hirashima, Yoshinari Sugimoto
  • Patent number: 7310356
    Abstract: Systems and methods for automatically discovering the configuration of network and/or communication facilities are provided. The determination generally involves receiving and/or sending at least one test message or packet with special characteristics that normally would be filtered by filtering/forwarding entities in connectionless routed cores, but normally would be forwarded by connectionless communication facilities. If the communication facilities do not contain the filtering/forwarding entity, the at least one test packet will be forwarded or passed through the communication facilities. If the at least one test packet is filtered or not passed, then at least two scenarios are possible. First, the at least one test packet may be filtered and may be silently discarded in which case a determination that the network did not pass the at least one test packet may be made based upon a timeout of a counter.
    Type: Grant
    Filed: June 24, 2003
    Date of Patent: December 18, 2007
    Assignee: Paradyne Corporation
    Inventors: Miguel Abdo, Greg Munroe, William H. Venz
  • Patent number: 7307943
    Abstract: A mobile station, and corresponding system and method, the mobile station including an IQ multiplexer configured to IQ multiplex transmission data for a data channel and control data for a control channel, and to generate a complex signal; and a transmitter configured to modulate the complex signal generated by the IQ multiplexer, and to transmit the modulated complex signal. When control data for a control channel are added, the IQ multiplexer is configured to assign the control data to be added to the Q axis when a set number for the data channel is an odd number, and to the I axis when an even number.
    Type: Grant
    Filed: January 13, 2005
    Date of Patent: December 11, 2007
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventor: Kazuhito Niwano
  • Patent number: 7304986
    Abstract: A distributed network switching system includes a data network. The system also includes multiple access interworking function (A-IWF) devices each operating as a gateway that enables customer premises devices to directly interface into the data network. The system further includes a centralized control and signaling interworking function (CS-IWF) device that performs call control functions and administrative functions and is adapted to interface narrowband and broadband signaling for call processing and control within the data network.
    Type: Grant
    Filed: July 7, 2006
    Date of Patent: December 4, 2007
    Assignee: AT&T Labs, Inc.
    Inventors: George Coleman Allen, Jr., Steven R. Partridge, Samuel Sigarto, Tina Sigarto, Haifeng Bi, Richard Wayne Stephenson
  • Patent number: 7301910
    Abstract: Methods and systems for automated analysis of signaling link utilization are disclosed. A method for automatically analyzing signaling link utilization includes displaying signaling link utilization data to a user via a computer display device. User input regarding a portion of the link utilization data that the user desires to analyze is received. Signaling message data corresponding to the selected link utilization data is automatically extracted from a database. The signaling message data may be used to determine the cause of signaling link utilization problems.
    Type: Grant
    Filed: November 6, 2003
    Date of Patent: November 27, 2007
    Assignee: Tekelec
    Inventor: Steven Michael Freedman
  • Patent number: 7299402
    Abstract: A method of reverse link power control for a reverse packet data channel in a wireless communication system allows a mobile station to autonomously change its data transmission rate. The mobile station transmits packet data over a reverse packet data channel having a data rate variant transmit power level that varies based on a transmit data rate on the packet data channel. The mobile station further transmits control signals over a reverse control channel associated with the reverse packet data channel. The transmit power level of the reverse control channel is such that the transmit power level does not vary with the transmit data rate on the packet data channel. The radio base station measures the strength of the received signals on the reverse control channel, compares the measured strength to a power control set point, and generates a power control signal responsive to the comparison of the control signal to the power control set point.
    Type: Grant
    Filed: February 13, 2004
    Date of Patent: November 20, 2007
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Anthony C. K. Soong, Seong-Jun Oh, Shiau-He Shawn Tsai, Young C. Yoon
  • Patent number: 7292687
    Abstract: A method of negotiating a call capability between signalling points in a telecommunications system. The method comprises sending a capability preference or prioritised list of preferences from an originating signalling point to a terminating signalling point or signalling transfer point, at the Call Control level. A capability acceptance is returned from the terminating signalling point or signalling transfer point to the originating signalling point at the Call Control level, if the terminating signalling point or signalling transfer point accepts a preference sent by the originating signalling point.
    Type: Grant
    Filed: October 15, 2003
    Date of Patent: November 6, 2007
    Assignee: Telefoektiebolaget LM Ericsson (publ)
    Inventors: Leslie Graf, Paul Hollis, David De Nicolo, Christian Groves, Ian Rytina, Juan Noguera-Rodriguez, Mark Hollis, Nebosja Dikic, Stephen Terrill, Sune Ramström, Lars Kari, Barry Dingle
  • Patent number: 7289423
    Abstract: When a scrambler (54) performs IQ multiplexing of output signals from a spreader 52 and a distributor 53 in order to generate a complex signal (I signal and Q signal), amplitude coefficients ?cc(I) and ?cc(Q) are determined in accordance with signal powers on I axis and Q axis.
    Type: Grant
    Filed: August 21, 2002
    Date of Patent: October 30, 2007
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventor: Kazuhito Niwano
  • Patent number: 7286522
    Abstract: An inband signaling modem communicates digital data over a voice channel of a wireless telecommunications network. An input receives digital data. An encoder converts the digital data into audio tones that synthesize frequency characteristics of human speech. The digital data is also encoded to prevent voice encoding circuitry in the telecommunications network from corrupting the synthesized audio tones representing the digital data. An output then outputs the synthesized audio tones to a voice channel of a digital wireless telecommunications network.
    Type: Grant
    Filed: April 26, 2002
    Date of Patent: October 23, 2007
    Assignee: Airbiquity, Inc.
    Inventors: Dan A. Preston, Joseph D. Preston, Robert Leyendecker, Wayne Eatherly, Rod L. Proctor, Philip R. Smith
  • Publication number: 20070242704
    Abstract: The embodiments of the present invention disclose a method for speech Codec negotiation in a communication system in which a calling user initiates the speech Codec negotiation with a called mobile station. The method includes: receiving by a mobile switching center emulation in the communication system an originating call signal from a calling user, the originating call signal carrying a number of a called mobile station; obtaining a latest speech Codec list used by the called mobile station from a database storing mobile station information in accordance with the number of the called mobile station; determining a speech Codec to be used in a communication between the calling user and the called mobile station; and establishing a voice bearer in the speech Codec for the calling user and the called mobile station. The method avoids a bearer update process and improves switching speed.
    Type: Application
    Filed: April 17, 2007
    Publication date: October 18, 2007
    Applicant: Huawei Technologies Co., Ltd.
    Inventor: Li Jiang
  • Patent number: 7280556
    Abstract: A method of transferring information signals between two separate send/receive interfaces which are part of the same communication device includes processing of the signals. The two interfaces use, at least for information data useful to users, referred to as user data, similar transmission structures and protocols, and in particular similar formats and apply opposite processing sequences for a particular incoming signal. One of the interfaces converts modulated data into baseband data and the other of the interfaces converts the baseband data into modulated data, or vice-versa. The method distinguishes between user data and signaling data, applies all processing operations to the signaling data to enable it to be interpreted by each of the interfaces, and applies to the user data only processing operations needed to transfer it from a first of the interfaces to the other of the interfaces without reproducing or reconstituting or interpreting its content.
    Type: Grant
    Filed: May 29, 2001
    Date of Patent: October 9, 2007
    Assignee: Alcatel
    Inventors: Frédéric Redondo, Philippe Desblancs
  • Patent number: 7263111
    Abstract: A system and method for interconnecting two network domains operable to transport SS7 traffic of different types. A gateway disposed between a first network domain and a second network domain includes a generic Interworking functionality that is operable to effectuate an MTP2-based relay linkage between a first MTP2 interface and a second MTP2 interface. A first link segment is established between the gateway's first MTP2 interface and an equivalent interface in the first network domain's end node. A second link segment is established between the gateway's second MTP2 interface and a corresponding equivalent interface in the second network domain's end node. Thereafter, the relay linkage coupling the link segments is established for facilitating MTP2 traffic therebetween.
    Type: Grant
    Filed: August 5, 2002
    Date of Patent: August 28, 2007
    Assignee: Alcatel Lucent
    Inventors: Robert Wayne Davis, Thomas Lamar George, Jr.
  • Patent number: 7260101
    Abstract: Configuration of a new point code connected to a SS7 network through a MTP level 3 aligned link, involves listening to point code status massages originating from distant point codes and forwarded on said link. When a message originating from an unknown distant point code is received, the table of distant point codes is updated with the point code number of the distant point code; at the same time, a primary route to the new distant point code through the link may be created. Therefore, configuration and testing of a new point code within an existing SS7 network, without having to re-enter the full network architecture, is facilitated.
    Type: Grant
    Filed: January 8, 2001
    Date of Patent: August 21, 2007
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Pierre Sauvage, Eric Julien
  • Publication number: 20070171943
    Abstract: This invention provides a method for upgrading the network rate of a Passive Optical Network (PON), which mainly includes: upgrading the optical fiber line rate of the central office device, and adapting, by the network terminal device, the working rate of the upstream/downstream line automatically to the optical fiber line rate of the central office device according to a downstream data flow transmitted from the central office device. Using the method of this invention, the network rate of the PON can be upgraded without replacing the network terminal and without a manual intervention.
    Type: Application
    Filed: November 9, 2006
    Publication date: July 26, 2007
    Applicant: Huawei Technologies Co., Ltd.
    Inventors: Wei Huang, Jun Zhao, Peilong Tan, Tao Jiang, Feng Wang, Jun Chen, Yuntao Wang, Huafeng Lin, Guo Wei
  • Patent number: 7248569
    Abstract: A method and system for disconnecting a terminating connection leg in a dialed service for a mobile subscriber in an MSC in a mobile intelligent network. Upon receipt of Int_Disconnect_Leg (Leg2) from an SCP in a DP_Analysed_Info state in a call initialization procedure for handling of an MO or MF call, The MSC transmits Int_Disconnect_Leg_Ack to the SCP, releases Leg2, and enters a Leg2_Disconnected state. Upon receipt of Int_Continue in the Leg2_Disconnected state, the MSC sets “Result” to “Leg1_Only”. Upon receipt of Int_Continue_With_Argument in the Leg2_Disconnected state, the MSC modifies stored information by information included in the message, and sets “Result” to “Leg1_Only”. The MSC provides supplementary functions under the control of the SCP if “Result” is “Leg1_Only”.
    Type: Grant
    Filed: March 24, 2004
    Date of Patent: July 24, 2007
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Su-Jin Bae, Sung-Bum Kim
  • Patent number: 7248606
    Abstract: A radio apparatus and base station apparatus that flexibly respond to an increase or decrease in the number of users without being constrained by the number of users. An A-DPCH signal processing section (106) generates dedicated transmission signals corresponding in number to users multiplexed based on the number of users for each sector input from a control station apparatus and outputs the multiplexed signal to a multiplexing section (105). An HSDPA signal processing section (107) selects a transmission destination sector based on an instruction from a base station control section, generates multiplexed transmission data and outputs the multiplexed data to the multiplexing section (105). The multiplexing section (105) code-multiplexes dedicated transmission signals of A-DPCH and packet data in HSDPA communication for each sector and outputs the multiplexed data to a radio transmission section (104).
    Type: Grant
    Filed: July 14, 2003
    Date of Patent: July 24, 2007
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventor: Takaaki Sato
  • Publication number: 20070160089
    Abstract: A synchronization system using at least one external office line signal, and a synchronization control method thereof. The synchronization system includes a plurality of framers receiving digital office line signals having a square wave form from a Public Switched Telephone Network (PSTN) through respective line interfaces, converting the digital office line signals into reference clock signals, and a synchronization frequency selector controlling a framer that first generates an interrupt, among the plurality of framers, to provide the corresponding reference clock signal. The synchronization system using at least one external office line facilitates line extension of a digital trunk of a keyphone switching apparatus, stably performs system synchronization by using the reference clock signal as an external synchronization clock to enhances system quality.
    Type: Application
    Filed: December 1, 2006
    Publication date: July 12, 2007
    Inventor: Young-Bum Suh
  • Patent number: 7242753
    Abstract: A telecommunications system determines a telecommunications service provider's routing preference for routing a call for a subscriber. The telecommunications system includes a storage that stores call routing data and a call routing service application for determining the routing preference using the call routing data. The call routing data includes an indicator that indicates when the subscriber subscribes to resold local switching services and when the subscriber subscribes to unbundled local switching services. The telecommunications system also includes a processor that executes the call routing service application, and that generates call routing instructions for routing the call according to the determined routing preference.
    Type: Grant
    Filed: March 29, 2006
    Date of Patent: July 10, 2007
    Assignee: AT & T Labs, Inc.
    Inventors: Laura Culli, Bruce A. Nance, John E. Simino, Harold C. Fleischer, III, Michael Hanrahan, M. Lourdes Coronado
  • Patent number: 7239648
    Abstract: A method and apparatus enables advanced signal processing in a wireless local area network (WLAN). First and second WLAN transceivers are provided with advanced signal processing capabilities. A maximum interframe period between data and an acknowledgement is required by the WLAN for compatibility. A duration of the interframe period is shorter than a duration that is required to perform the advanced signal processing. The first WLAN transceiver transmits a header and data. A first data field in the header is specified that enables the advanced signal processing. A second data field is specified that defines a data time period and an extension time period. The first WLAN transceiver transmits data during the data time period and dummy data during the extension time period. The second WLAN transceiver receives the header and initiates receiver processing during the extension time period.
    Type: Grant
    Filed: February 21, 2002
    Date of Patent: July 3, 2007
    Assignee: Marvell International Ltd.
    Inventors: Weishi Feng, Peter Loc
  • Patent number: 7239253
    Abstract: A sound codec including a compression portion and a decompression portion. The compression portion separates the incoming sound packet bandwidth into frequency sub-bands using a bank of infinite impulse response (IIR) filters. In accordance with the invention, the lower frequency signals are divided into more sub-bands than the higher frequency signals. Once the signals are divided into sub-bands, each sub-band signal is quantized. The resulting signals of all of the quantized sub-bands are then sent out over a communications link along with the filter state at the end of each sound packet. The decompression portion recombines the individual sub-band signals together (using a bank of infinite impulse response (IIR) filters) to form the audio data using the filter states to configure the reconstruction.
    Type: Grant
    Filed: September 16, 2004
    Date of Patent: July 3, 2007
    Assignee: Intel Corporation
    Inventor: Karl Denninghoff
  • Publication number: 20070140125
    Abstract: A method for decompressing a signalling message in a communications device in a communication system comprising the steps of receiving a virtual machine bytecode block for carrying out decompression on the signalling message; detecting in at least one part of the virtual machine bytecode block at least one predefined code block, matching the virtual machine bytecode block comprising at least one detected code blocks against a bytecode reference block comprising a reference to at least one instruction set; selecting the at least one instruction set on the basis on the matching step; and performing the selected at least one instruction set.
    Type: Application
    Filed: August 17, 2006
    Publication date: June 21, 2007
    Inventor: Pekka Pessi
  • Patent number: 7233657
    Abstract: A method for operating and translating SCCP global titles to implement the global roaming uses a signal message routing based upon the SCCP global title. According to one embodiment of the present invention, if a received signal message is routed according to the global title, the required global title translation is for global roaming is determined by detecting whether a local global title has been defined in the received signal message. If the translation is to be made for global roaming, then the types of global title translations to be conducted are determined among the country code global title translation, the network code global title translation and the mobile subscriber identification number global title translation based upon whether the country code and/or the network code of the local global code are identical with those of the global code to be translated. In this manner, the present invention may implement the efficient SCCP global title translation while supporting the global roaming.
    Type: Grant
    Filed: December 18, 2002
    Date of Patent: June 19, 2007
    Assignee: LG Nortel Co., Ltd.
    Inventor: Seung Hee Yi
  • Patent number: 7227873
    Abstract: A method and an apparatus for negotiating the used communication mode in a telecommunications system, wherein a connection is arranged between at least two system elements. The system elements exchange messages and check whether a first in-band signalling protocol is supported. The communication mode is selected according to the first signalling protocol if the system elements support the first signalling protocol. If the first signalling protocol is not supported, support for a tandem free operation (TFO) protocol is checked and communication between the system elements is continued according to TFO procedures if the system elements support TFO. If the first signalling protocol and TFO are not supported, the communication mode between the system elements may be selected according to a second in-band signalling protocol.
    Type: Grant
    Filed: July 26, 2002
    Date of Patent: June 5, 2007
    Assignee: Nokia Corporation
    Inventor: Matti Lehtimäki
  • Patent number: 7224686
    Abstract: A communication network includes an SS7 Security Gatekeeper that authenticates and validates network control messages within, transiting, entering and leaving an overlying control fabric such as an SS7 network. The SS7 Security Gatekeeper incorporates several levels of checks to ensure that messages are properly authenticated, valid, and consistent with call progress and system status. In addition to message format, message content is checked to ensure that the originating node has the proper authority to send the message and to invoke the related functions. Predefined sets of templates may be used to check the messages, each set of templates being associated with respective originating point codes and/or calling party addresses. The templates may also be associated with various system states such that messages corresponding to a particular template cause a state transition along a particular edge to a next state node at which another set of templates are defined. Thus, system and call state is maintained.
    Type: Grant
    Filed: January 18, 2001
    Date of Patent: May 29, 2007
    Assignee: Verizon Services Corp.
    Inventors: Arthur Doskow, Harry A. Hetz, Kathleen F. Jarosinski
  • Patent number: 7221669
    Abstract: An inband signaling modem communicates digital data over a voice channel of a wireless telecommunications network. An input receives digital data. An encoder converts the digital data into audio tones that synthesize frequency characteristics of human speech. The digital data is also encoded to prevent voice encoding circuitry in the telecommunications network from corrupting the synthesized audio tones representing the digital data. An output then outputs the synthesized audio tones to a voice channel of a digital wireless telecommunications network.
    Type: Grant
    Filed: March 6, 2002
    Date of Patent: May 22, 2007
    Assignee: Airbiquity, Inc.
    Inventors: Dan A. Preston, Joseph Preston, Robert Leyendecker, Wayne Eatherly, Rod L. Proctor
  • Patent number: 7218611
    Abstract: A broadcast system BS includes a broadcast apparatus 1 and a reception apparatus 2. The broadcast apparatus 1 first receives and stores therein a proxy request PR including at least an identifier assigned to the reception apparatus 2 and a command to be transmitted to the reception apparatus 2. Moreover, the broadcast apparatus 1 extracts the set of the identifier of the reception apparatus 2 and the command for the reception apparatus 2 from the proxy request PR stored therein, and assembles a command packet from the set of the identifier and the command. Then, the broadcast apparatus 1 generates a stream in which the assembled command packet is multiplexed, and sends it out to a broadcast channel. The reception apparatus 2 separates the command packet from the stream sent out to the broadcast channel, and restores the set of the identifier and the command of the reception apparatus 2.
    Type: Grant
    Filed: July 3, 2002
    Date of Patent: May 15, 2007
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Yoshihiro Mimura, Shigeaki Watanabe, Tadao Kusudo, Tomonori Nakamura
  • Patent number: 7218604
    Abstract: A wireless transmitter (TX1). The transmitter comprises circuitry for providing a plurality of control (CONTROL) bits and circuitry for providing a plurality of user (USER) bits. The transmitter also comprises circuitry for modulating (16) the plurality of control bits and the plurality of user bits into a stream of complex symbols and circuitry (18) for converting the stream of complex symbols into a parallel plurality of complex symbol streams. The transmitter also comprises circuitry (20) for performing an inverse fast Fourier transform on the parallel plurality of complex symbol streams to form a parallel plurality of OFDM symbols and circuitry (22) for converting the parallel plurality of OFDM symbols into a serial stream of OFDM symbols. Each OFDM symbol in the serial stream of OFDM symbols comprises a plurality of data points, and selected (SF2.x) OFDM symbols in the serial stream of OFDM symbols carry modulation information (AMOD).
    Type: Grant
    Filed: January 30, 2002
    Date of Patent: May 15, 2007
    Assignee: Texas Instruments Incorporated
    Inventors: Srinath Hosur, Dennis Rauschmayer
  • Patent number: 7218648
    Abstract: A communication system communicates control data in unused segments in the data stream of an asynchronous channel. The communication system includes a transmitting unit and a receiving unit. The transmitting unit transmits communications data to the receiving unit via the asynchronous channel, in compliance with the channel's asynchronous protocol. However, the transmitting unit transmits control data to the receiving unit in unused segments of the data stream.
    Type: Grant
    Filed: March 1, 2002
    Date of Patent: May 15, 2007
    Assignee: Terabeam Corporation
    Inventor: J. Timothy Jackson
  • Patent number: 7206305
    Abstract: An inband signaling modem communicates digital data over a voice channel of a wireless telecommunications network. An input receives digital data. An encoder converts the digital data into audio tones that synthesize frequency characteristics of human speech. The digital data is also encoded to prevent voice encoding circuitry in the telecommunications network from corrupting the synthesized audio tones representing the digital data. An output then outputs the synthesized audio tones to a voice channel of a digital wireless telecommunications network.
    Type: Grant
    Filed: March 11, 2002
    Date of Patent: April 17, 2007
    Assignee: Airbiquity, Inc.
    Inventors: Dan A. Preston, Joseph Preston, Robert Leyendecker, Wayne Eatherly, Rod L. Proctor
  • Patent number: 7203180
    Abstract: A method, telecommunication system, and a service control point is provided for monitoring the load situation of the service control point during the initiation of a service logic controlling the connection, particularly when the control point cannot restrict the service requests. The load situation may be monitored by maintaining a first data item in the control point, which indicates if the control point is overloaded. When an operation requesting the initiation of a service logic is received, a check is made to determine if the control point is overloaded. The service logic is initiated if the control point is not overloaded.
    Type: Grant
    Filed: November 12, 2002
    Date of Patent: April 10, 2007
    Assignee: Nokia Corporation
    Inventors: Paulius Meskauskas, Ossi Tervonen, Jukka Ahonen
  • Patent number: 7203159
    Abstract: A back-up channel line card-installed ESF framing mechanism independently sources an FDL signaling channel for the transport of protection switch signaling information, taking advantage of the fact that DSL multiplexer equipment is capable of accepting and processing ESF framed digital data, including embedded FDL-based signaling information. Upon completion of transport of the FDL-based signaling information, the back-up channel is used for data transport in place of a faulty channel.
    Type: Grant
    Filed: June 11, 2002
    Date of Patent: April 10, 2007
    Assignee: Adtran, Inc.
    Inventors: Dennis B. McMahan, Bradley D. Tidwell
  • Patent number: 7200129
    Abstract: In a time division multiple access system, a subscriber listens to an assigned channel (300) and an alternate channel (302) until a location of reverse channel signaling is determined for the assigned channel. The subscriber also obtains a fixed periodic rate (304) for the reverse channel signaling. Based on the fixed periodic rate, the subscriber selectively listens to the alternate channel to receive reverse channel signaling while transmitting information on the assigned channel. The base repeater, however, selects the fixed periodic rate for reverse channel signaling and transmits the reverse channel signaling at the fixed periodic rate to the transmitting subscriber. If the base repeater receives a burst belonging to a superframe and determines that any burst in the superframe will collide with the reverse channel signaling, the base repeater buffers any received burst in the superframe and transmits the buffered bursts at a subsequent time.
    Type: Grant
    Filed: March 12, 2004
    Date of Patent: April 3, 2007
    Assignee: Motorola, Inc.
    Inventor: Robert A. Biggs
  • Patent number: RE40254
    Abstract: Signalling information is conveyed from a transmitting device (101) to a receiving device (102) in a cellular radio network where user data transmission takes place on a traffic channel in discrete transmission bursts (111-120; 211-220; 310-313) consisting of consecutive symbols. A piece of signalling information is formatted into symbols which are transmitted as a block of consecutive symbols (FACCH) in a certain transmission burst of a traffic channel. It is also indicated within said certain transmission burst that it contains symbols carrying signalling information.
    Type: Grant
    Filed: November 3, 2006
    Date of Patent: April 22, 2008
    Assignee: Nokia Corporation
    Inventors: Eero Nikula, Harri Jokinen, Hannu Vilpponen