Patents
Sitemap › H04 - Electric communication technique › H04M - Telephonic communication › H04M 9 - Arrangements for interconnection not involving centralised switching
Patents for H04M 9 - Arrangements for interconnection not involving centralised switching (8,105)
06/2007
06/28/2007US20070147602 Network interface device, apparatus, and methods
06/28/2007US20070147229 Ranging and round trip delay timing adjustment in a multi-point to point bidirectional communication system
06/27/2007CN2917118Y Multiple channel interphone device
06/27/2007CN1988401A System and method for preventing misreceiving number echo
06/26/2007US7236765 Data communication over power lines
06/26/2007US7236586 Synchronization of echo cancellers in a voice processing system
06/26/2007US7236487 System for and method of exchanging server data in packet unit
06/26/2007US7236463 Transceiver for echo and near-end crosstalk cancellation without loop timing configuration
06/26/2007CA2451417C Method of capturing constant echo path information in a full duplex speakerphone using default coefficients
06/21/2007US20070142023 Telephone having power frequency carrier
06/21/2007US20070140476 Protective sleeve for telephone handsets
06/21/2007US20070140475 Hospital meter system
06/21/2007US20070140474 Load coil detection and localization
06/21/2007US20070140473 Bidirectional transmission device and bidirectional transmission method
06/21/2007US20070140472 xDSL MODEM AND METHOD FOR STABILIZING CONNECTION OF xDSL MODEM
06/21/2007US20070140471 Enhanced usage of telephone in noisy surroundings
06/20/2007EP1685697A4 Method and apparatus for adaptive echo and noise control
06/20/2007CN1984102A Device and method for eliminating electric echo
06/14/2007US20070135155 Power Control Subsystem with a Plurality of Current Limit Values
06/14/2007US20070135086 Providing detailed information on powered device in system for supplying power over communication link
06/14/2007US20070135085 System and method for providing access in powerline communications (PLC) network
06/14/2007US20070133787 Method and apparatus for identifying crosstalk sources
06/14/2007US20070133786 System for conditioning echo response of loop start trunk line
06/14/2007US20070133442 Two-way communications device having a single transducer
06/13/2007EP1502417B1 Managing power in a line powered network element
06/13/2007CN2912133Y Internal communicating system having selectivity communicating function
06/12/2007US7231234 Method and apparatus for reducing echo in a communication system
06/12/2007US7231037 Active audio compressing in telecommunication
06/09/2007CA2570547A1 System for conditioning echo response of loop start trunk line
06/07/2007WO2007062634A1 Method for controlling the adaptive behavior of acoustic echo compensation
06/07/2007WO2007021595A3 Receiver adc clock delay based on echo signals
06/07/2007US20070127715 Method and system for providing DC power on local telephone lines
06/07/2007US20070127714 Voice-telephone-line multi-point remote access system
06/07/2007US20070127713 Methods and apparatuses to provide fault monitoring for a network interface device
06/07/2007US20070127712 Methods and apparatuses to provide a back up power supply for a network interface device
06/07/2007US20070127711 Adaptive gain control based on echo canceller performance information
06/07/2007US20070127710 Advanced ADSL splitter
06/07/2007US20070127709 Terminal apparatus
06/07/2007US20070127708 IP telephone apparatus and method of controlling the same
06/06/2007CN1320782C Echo processing apparatus
06/05/2007US7228158 Portable terminal capable of providing stereo sound
05/2007
05/31/2007WO2007062287A2 Method and apparatus for double-talk detection in a hands-free communication system
05/31/2007WO2007060753A1 Voice information processing device, and wiring system using the same device
05/31/2007US20070123321 Telephone apparatus
05/31/2007US20070123312 Multi-use acoustic leak path system
05/31/2007US20070123283 System and method for obscuring unwanted ambient noise and a mobile communications device and central office equipment incorporating the same
05/31/2007US20070121932 Telephone with a Receiver Operated Reed Hook Switch
05/31/2007US20070121931 Quick shift jack panel
05/31/2007US20070121930 Communication apparatus and communication method
05/31/2007US20070121929 Multiple Current Limits for Power Over Ethernet Controller
05/31/2007US20070121928 Anti-howling structure
05/31/2007US20070121927 Device and method for suppressing dsl signal echo induced by bridgetap
05/31/2007US20070121926 Double-talk detector for an acoustic echo canceller
05/31/2007US20070121925 Method and apparatus for double-talk detection in a hands-free communication system
05/31/2007US20070121924 DSL modem and a method of providing operating power for same
05/31/2007US20070121923 Telephone line communication interface
05/31/2007US20070121922 Method for playing a personalized clip
05/30/2007CN1973484A Methods and apparatus for provisioning phantom power to remote devices based on admission control
05/24/2007WO2005041348A3 Distributed cell balancing
05/24/2007US20070116262 Systems and methods for an electronic hook switch for customer premises equipment
05/24/2007US20070116260 Termination circuit for broadband signal lines
05/24/2007US20070116259 Terminal block for adsl
05/24/2007US20070116258 Switch module for computer service line
05/24/2007US20070116257 Sealing current terminator for inhibiting oxidation and methods therefor
05/24/2007US20070116256 Method and apparatus for powering electronics associated with a telephone line twisted pair
05/24/2007US20070116255 Echo canceller having a series arrangement of adaptive filters with individual update control strategy
05/24/2007US20070116254 Configuration of echo cancellation
05/24/2007US20070116209 Multipoint-to-point communication using orthogonal frequency division multiplexing
05/24/2007US20070115803 Multipoint-to-point communication using orthogonal frequency division multiplexing
05/24/2007US20070115390 Television broadcast receiving apparatus, door phone apparatus, and interphone system
05/23/2007CN1968010A Apparatus and method to control volume of received sound signals
05/22/2007US7221755 Method of capturing constant echo path information in a full duplex speakerphone
05/18/2007WO2007056230A2 Methods and apparatuses to provide fault monitoring for a network interface device
05/18/2007WO2007056197A2 Methods and apparatuses to provide a back up power supply for a network interface device
05/17/2007US20070110221 Internet Facilitated Emergency and General Paging System
05/17/2007US20070110220 Distributed control of carrier frequency in multipoint-to-point orthogonal frequency division multiplexing communication
05/17/2007US20070110096 Contention-based access to tones in orthogonal frequency division multiplexing (ofdm) waveform
05/16/2007EP1786191A1 Acoustic echo canceller
05/16/2007CN1964405A A method to eliminate echo number-receiving and conference system
05/15/2007US7218957 Bluetooth terminal
05/15/2007US7218730 System and method for analysis and filtering of signals in a telecommunications network
05/15/2007US7218729 Subscriber line interface circuitry with current drivers for downstream voice and data signals
05/15/2007US7218713 Telephone line interface for DAA circuitry
05/15/2007US7218708 Internet facilitated emergency and general paging system
05/10/2007DE102005035397B4 Hausanlage und Verfahren zum Betreiben einer Hausanlage Heating system and method of operating a house plant
05/09/2007EP1783923A1 Double-talk detector for acoustic echo cancellation
05/09/2007CN1960298A Network diagnostic method
05/08/2007US7215767 Fixed base assembly of mobile phone
05/08/2007US7215765 Method and apparatus for pure delay estimation in a communication system
05/08/2007US7215764 Current sensing echo cancellation device
05/08/2007US7215762 Method of selecting impedance setting for loop start trunk line
05/03/2007DE102005051391A1 Türsprechanlage Door Phone
05/02/2007EP1779644A2 Systems and methods for echo cancellation and noise reduction
05/02/2007EP1042903A4 Echo canceller employing dual-h architecture having improved non-linear echo path detection
05/02/2007CN1957592A 会议系统 Conference System
05/02/2007CN1956480A Acoustic echo removing method
05/01/2007US7213073 Call management system
05/01/2007US7212841 Telephone apparatus and a communication method using such apparatus
05/01/2007US7212628 Echo cancellation/suppression and double-talk detection in communication paths
05/01/2007US7212627 Line interface with analog echo cancellation
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