H04M 9 - Arrangements for interconnection not involving centralised switching

Patents for H04M 9 - Arrangements for interconnection not involving centralised switching (8,105)
09/2002
09/11/2002	EP1238528A1 Real time processing and management method for canceling out the echo between a loudspeaker and a microphone of a computer terminal
09/11/2002	CN1369173A Symmetry based subband acoustic echo cancellation
09/10/2002	US6449361 Control method and device for echo canceller
09/06/2002	WO2002069611A1 Dve system with customized equalization
09/05/2002	US20020124267 MTA intercom feature
09/04/2002	EP1236340A1 Echo canceller in a communication system at a terminal
09/04/2002	CN1367978A Adaptability to multiple hands-free communication accessories
09/04/2002	CN1367977A Methods and apparatus for improved sub-band adaptive filtering in echo cancellation systems
09/04/2002	CN1367976A Methods and apparatus for improving adaptive filter performance by inclusion of inaudible information
09/04/2002	CN1367602A Echo signal suppressor
08/2002
08/29/2002	US20020118822 Method and apparatus for echo cancellation
08/29/2002	US20020118283 Electronic digital door opener
08/27/2002	US6442275 Echo canceler including subband echo suppressor
08/22/2002	WO2002065662A2 Line interface a matching impedance coupled ro a feedback path
08/22/2002	US20020116719 Controlling service units in a communication system
08/21/2002	EP1232645A2 Echo canceller
08/21/2002	EP1232632A1 Band pass and notch filters for echo reduction with less phase distortion
08/14/2002	EP1230784A1 Echo attenuating method and device
08/13/2002	US6434583 Fast fourier transform apparatus and method
08/13/2002	US6434235 Acoustic echo canceler
08/13/2002	US6434234 Process for improving the echo suppression in a telecommunications system
08/13/2002	US6434110 Full-duplex speakerphone circuit including a double-talk detector
08/08/2002	US20020107979 Computer data transmission over a telecommunictions network
08/08/2002	US20020106077 Use of handset microphone to enhance speakerphone loudspeaker performance
08/08/2002	US20020106060 Communication system with multicarrier telephony transport
08/08/2002	US20020105950 Computer data transmission over a telecommunications network
08/07/2002	EP1229709A2 Echo sound signal suppressing apparatus
08/06/2002	US6430295 Methods and apparatus for measuring signal level and delay at multiple sensors
08/06/2002	CA2249825C Howling controller
08/01/2002	WO2002060156A2 Narrow band shadow encoder
08/01/2002	US20020102937 Communication system with multicarrier telephony transport
08/01/2002	US20020101981 Method and apparatus for cancelling mult-channel echo
07/2002
07/31/2002	CN1361972A Enhancement of near-end voice signals in an echo suppression system
07/30/2002	CA2250809C Double-talk insensitive nlms algorithm
07/30/2002	CA2201505C Switching network for a mobile telecommunication system
07/25/2002	US20020098798 Communication system with multicarrier telephony transport
07/25/2002	US20020098797 Acquisition and tracking in communication system with multicarrier telephony transport
07/25/2002	US20020098796 Hybrid/fiber coax video and telephony communication system with poly-phase filtering
07/25/2002	US20020098795 Communicating errors in a telecommunications system
07/25/2002	US20020097864 Method for echo cancellation
07/25/2002	US20020097861 Narrow band shadow encoder
07/23/2002	US6424888 Call response method for vehicle
07/23/2002	US6424720 Method and device for reducing multi-channel acoustic echo and adapting sound to space conditions
07/18/2002	US20020094071 Key telephone system and interface unit for key telephone
07/17/2002	EP0856221B1 A telecommunications switch
07/11/2002	WO2002054719A2 Method and apparatus for active reduction of speakerphone echo
07/11/2002	US20020090909 Hybrid/fiber coax video and telephony communication system with poly-phase filtering
07/11/2002	US20020090079 Method and apparatus for setting a step size for an adaptive filter coefficient of an echo canceller
07/11/2002	DE10062342A1 Verfahren und Vorrichtung zur Realisierung von Sprachkonferenzen Method and apparatus for the realization of voice conferences
07/09/2002	US6418558 Hybrid fiber/coax video and telephony communication
07/04/2002	US20020087305 Method and apparatus for active reduction of speakerphone singing
07/04/2002	US20020085707 Control of echo return loss on a PC based IP telephone
07/04/2002	US20020085695 Automatic phone line re-allocation
07/03/2002	EP1219102A1 Tagging echoes with low frequency noise
07/03/2002	EP0951798B1 Acoustic feedback correction
07/02/2002	US6415133 Acquisition and tracking in communication system with multicarrier telephony transport
06/2002
06/27/2002	WO2002051016A2 Bidirectional signal repeater
06/27/2002	US20020080865 Bidirectional signal repeater
06/26/2002	EP1216518A2 Echo cancelling process with improved phase control
06/20/2002	WO2002049336A1 Method and device for setting up voice conferences
06/20/2002	US20020076037 Echo canceler with automatic gain control of echo cancellation signal
06/20/2002	US20020075818 Echo canceling system
06/19/2002	CN1354949A Loudspeaker volume range control
06/19/2002	CN1354616A Preventive oscillating circuit
06/18/2002	US6408070 Method and apparatus for echo control in a communication system
06/18/2002	US6408060 Digital key telephone system and extension terminal device thereof
06/18/2002	US6408008 Circuit for attenuation of echos caused by line variations and an interfacing system for capacitively coupling a plurality of sources to a two-wire communication line
06/18/2002	US6407996 Processing device network
06/13/2002	US20020071573 DVE system with customized equalization
06/12/2002	CN1353904A Method and apparatus for space-time echo cancellation
06/12/2002	CN1353512A Message equipment
06/11/2002	US6404886 Method and apparatus for echo cancelling with multiple microphones
06/06/2002	WO2002023755A3 Residual echo estimation for echo cancellation
06/06/2002	WO2001026339A8 Band pass and notch filters for echo reduction with less phase distortion
06/06/2002	US20020067824 Two-step algorithm for training an echo cancellation filter
06/05/2002	EP1211815A2 Oscillation prevention circuit
06/05/2002	EP1210814A2 Methods and apparatus for improving adaptive filter performance by inclusion of inaudible information
06/05/2002	EP1046128A4 Method and apparatus for image capture, compression and transmission of a visual image
06/05/2002	EP0962091A4 An electronic voice mail message handling system
05/2002
05/30/2002	WO2002043350A2 Call management system
05/30/2002	US20020064286 Echo canceller
05/29/2002	EP1208689A2 Acoustical echo cancellation device
05/29/2002	EP1208413A2 Coded domain noise control
05/29/2002	CN1351795A Acoustic echo cancellation
05/29/2002	CN1351782A Sound communication device and echo processor
05/28/2002	US6396918 Method for forwarding a call to a telephone behind a key telephone system
05/23/2002	WO2002032356A8 Transient processing for communication system
05/23/2002	WO2001035603A3 Echo canceller
05/23/2002	US20020061732 Oscillation prevention circuit
05/22/2002	CN1085481C Telephone having a speech band limiting function
05/21/2002	US6392760 Multimedia communications network
05/21/2002	CA2363193A1 Oscillation prevention circuit
05/16/2002	WO2002039709A1 Control system of acoustic echo cancellers for telephone terminals with handset or handsfree
05/16/2002	WO2002021807A3 Echo reduction in two-way communication
05/16/2002	US20020059064 Speech communication apparatus
05/15/2002	CN1085033C Apparatus for embodying combined time switching and conference calling functions
05/15/2002	CN1085026C Telecommunicaltion system and exchange network used for the telecommunicaltion system
05/14/2002	US6389440 Acoustic feedback correction
05/09/2002	US20020054685 System for suppressing acoustic echoes and interferences in multi-channel audio systems
05/07/2002	US6385176 Communication system based on echo canceler tap profile

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