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)
10/2007
10/25/2007US20070249317 Methods and systems for providing wireless network communications
10/25/2007US20070248223 Communication channel activation switch apparatus
10/25/2007US20070248146 Methods and systems for tone hopping
10/25/2007US20070248001 Method and system for forward-looking tone allocation
10/25/2007DE102006018719A1 Videosprechstelle einer Türsprechanlage Video intercom door intercom system
10/25/2007DE102006017244B3 House intercom inner station, has recess provided at handset, retainer engaged in recess for retaining handset, and stopper provided within recess for retaining handset at predetermined distance from housing
10/24/2007EP1848243A1 Multi-channel echo compensation system and method
10/23/2007US7286812 Coupling between power line and customer in power line communication system
10/23/2007US7286663 Asymmetric digital subscriber line system capable of automatically controlling receipt gain and method thereof
10/18/2007WO2007117311A2 A dsl modem and a method of providing operating power for same
10/18/2007US20070245394 Training premable in multipoint-to-point communication using orthogonal frequency division multiplexing
10/18/2007US20070242597 Scanning by remotes in multipoint-to-point communication using orthogonal frequency division multiplexing
10/17/2007EP1845699A1 Audio signal decorrelator
10/17/2007EP1053628A4 Echo canceller having improved non-linear processor
10/17/2007CN101056343A Method and call terminal for multiple users to use the same call terminal
10/17/2007CN100344074C Plate card type echo eliminator
10/16/2007US7283585 Multiple data rate communication system
10/11/2007US20070237322 Power over ethernet connector with integrated power source equipment (PSE) controller
10/11/2007US20070237182 Contention-based access in multipoint-to-point communication using orthogonal frequency division multiplexing
10/11/2007US20070237070 Methods for contention-based bandwidth requests in orthogonal frequency division multiplexing systems
10/11/2007US20070237066 Systems for contention-based bandwidth requests in orthogonal frequency division multiplexing systems
10/11/2007DE102006016593A1 Vehicle-internal communication device for passengers of vehicle, has rear microphone directing backward, and rear loudspeaker fitted locally before rear passenger within upper region of backrest, preferably head support of front seat
10/09/2007US7280857 Mobile communications device having rotating display and camera
10/09/2007US7280845 Method for simplifying the exchange of a SIM card of subscribers of a digital mobile communications network
10/09/2007US7280655 DSL protector having a detachable wire interface
10/09/2007US7280654 Modified affine projection algorithm for non-stationary signal
10/04/2007WO2007109949A1 A method and a device for generating comfort noise in echo cancellation
10/04/2007US20070230686 Method and Devices for Providing Wetting Current
10/04/2007US20070230325 Method and system for training sequences
10/04/2007US20070229305 Data Communication Over Power Lines
10/04/2007DE202007009264U1 Briefkasten und Briefkastenanlage mit Kommunikationsmodul Mailbox and mailbox system with communication module
10/04/2007DE202007009263U1 Briefkasten und Briefkastenanlage mit Kommunikationsmodul Mailbox and mailbox system with communication module
10/03/2007EP1841193A1 Electrical device, in particular door intercom for a domestic intercom facility
10/03/2007CN101047439A Radio communication apparatus and radio communication method
10/03/2007CN101046965A Method for generating comfortable noise in echo removing
10/03/2007CN101046955A PCM code flow voice detection method
10/02/2007US7277691 Method and system for management of call tones
10/02/2007US7277538 Distortion compensation in an acoustic echo canceler
09/2007
09/27/2007WO2007108850A2 Cache-based echo canceller
09/27/2007US20070225050 Bluetooth® Enabled Hearing Aid
09/27/2007US20070223363 Control modulation in multipoint-to-point communication using orthogonal frequency division multiplexing
09/27/2007US20070223362 System for orderwire modulation
09/27/2007US20070223361 Method for orderwire modulation
09/26/2007CN101043560A Echo eliminator and echo cancellation method
09/25/2007US7274688 Telephone communication system over a single telephone line
09/20/2007WO2006105055A3 Sound event processing with echo analysis
09/20/2007US20070217600 Apparatus and method for controlling acoustic echo cancellation in mobile communication terminal
09/20/2007US20070217599 Cache-based echo canceller
09/20/2007US20070217325 Distributed control in synchronizing remote units to host unit
09/20/2007US20070217324 Distributed control in synchronizing remote units to host unit
09/20/2007DE202005021327U1 System zum Steuern und/oder Auslösen der Abgabe oder Wiedergabe von Botschaften, Mitteilungen und/oder Signalen System for controlling and / or trigger the delivery or reproduction of messages, announcements and / or signals
09/19/2007EP1835708A2 Output phase modulation entrainment containment for digital filters
09/19/2007CN200950619Y Intercom keys
09/19/2007CN101040512A Echo cancellation
09/19/2007CN100338829C Switching communication socket capable of changing angle
09/18/2007US7272215 Automatic rapid switching between DSL service and POTS over loaded loops
09/13/2007WO2007102325A1 Recording apparatus
09/13/2007WO2007047219A3 Sealing current terminator for inhibiting oxidation and methods therefor
09/13/2007US20070211888 Power line communications module and method
09/13/2007US20070211887 Method and system for controlling an operation of an electrical power network
09/13/2007US20070211886 Phone converter system
09/13/2007US20070211885 System and method for detecting a connection condition of a phone jack
09/13/2007US20070211617 Variable error correction in multipoint-to-point communication using orthogonal frequency division multiplexing
09/12/2007EP1832104A1 Audio system and method for acoustic echo cancellation
09/12/2007EP1832003A2 Hands-free push-to-talk radio
09/11/2007US7269450 Sliding/swing-type portable digital communication apparatus
09/11/2007US7269403 Dual-mode wireless and wired power line communications
09/11/2007US7269255 Portable terminal device
09/11/2007US7269254 Integrated driver circuitry
09/11/2007US7269211 Residual echo reduction for a full duplex transceiver
09/06/2007US20070206817 Audio processor
09/06/2007US20070206782 Handset for mobile phone
09/06/2007US20070206781 Semiconductor device
09/06/2007US20070206780 Network termination apparatus
09/06/2007US20070206779 Echo cancellation
09/06/2007US20070206778 Audio communication system
09/06/2007US20070206777 Method of controlling an adaptation of a filter
09/06/2007US20070206776 Maintaining line voltage during reset
09/06/2007US20070206775 Programmable plain old telephone line impedance matching circuits
09/06/2007US20070206693 Adaptive modulation in multipoint-to-point communication using orthogonal frequency division multiplexing
09/06/2007US20070206491 Distributed control of power in multipoint-to-point orthogonal frequency division multiplexing communication
09/06/2007DE102006010002A1 House installation for use in pharmacy, has controller controlling two interfaces for connecting house installation with telephone and personal computer depending on data set that contains information about identity
09/06/2007DE102006010001A1 Signal exchange method for in-building station and communication device in pharmacist circuit by establishing communication over data exchange network based on configuration of communication device and kind of signals that may be exchanged
09/05/2007EP1830550A2 Echo prevention circuit, filter coefficient setting method, and recording medium with program recorded
09/05/2007EP1829351A2 Isolation of transmit and receive signals
09/04/2007US7266591 Providing content delivery during a call hold condition
09/04/2007US7266196 Telephone mouthpiece and earpiece cover system
09/04/2007US7266092 Adaptive frequency duplexing system and method
08/2007
08/30/2007US20070204317 Symbol alignment in multipoint-to-point orthogonal frequency division multiplexing communication
08/30/2007US20070202930 Method and system for testing embedded echo canceller in wireless network
08/30/2007US20070202839 System and method for data transmission over a power line of a switch mode power supply by frequency modulating the switch frequency thereof
08/30/2007US20070201688 Cable telephony network supporting roaming VoIP terminals
08/30/2007US20070201687 Subscriber Line Interface Circuitry
08/30/2007US20070201628 Distributed control of power in multipoint-to-point orthogonal frequency division multiplexing communication
08/30/2007US20070201573 System for variable forward error correction in a multipoint to point orthogonal frequency division multiplexing system
08/30/2007US20070201352 Ranging and round trip delay timing adjustment in a multi-point to point bidirectional communication system
08/30/2007US20070201348 Use of identifier of remote unit for downstream signals
08/30/2007US20070201347 Use of guard bands in multipoint-to-point orthgonal frequency division multiplexing communication
08/30/2007US20070201346 Multipoint-to-point communication using orthgonal frequency division multiplexing and identification codes
08/30/2007US20070201345 Distributed control of carrier frequency in multipoint-to-point orthogonal frequency division multiplexing communication
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