| Patent No. | Patent Title: |
| 7072465 | Adaptive filter for network echo cancellation |
| 7068793 | Method of automatically fitting hearing aid |
| 7065207 | Controlling attenuation during echo suppression |
| 6990196 | Crosstalk identification in xDSL systems |
| 6978007 | Communications systems |
| 6978009 | Microprocessor-controlled full-duplex speakerphone using automati... |
| 6978014 | Apparatus for providing power to line drivers in a communication ... |
| 6973184 | System and method for stereo conferencing over low-bandwidth link... |
| 6968055 | DC holding circuit |
| 6959083 | Loop current monitor circuitry and method for a communication sys... |
| 6950512 | Circuit arrangement for forming the termination of an analogous s... |
| 6950515 | Telecommunication system using digital-subscriber lines coexistin... |
| 6947554 | Least mean power consumption in telecommunications systems |
| 6947529 | DSL compatible load coil |
| 6947530 | Adaptive pilot tone location in a transmission system |
| 6944284 | Pulsed volume control of a magnetic ringer |
| 6944282 | Arrangement for using a number of modifiable settings |
| 6940964 | Push-button signal receiving circuit and a method of detecting a ... |
| 6940968 | Telephone terminal apparatus and method |
| 6937720 | xDSL class C-AB driver |
| 6937719 | Multiplexing and demultiplexing of narrowband and broadband servi... |
| 6931101 | Method and apparatus for inband testing of an echo canceller |
| 6928160 | Estimating bulk delay in a telephone system |
| 6928161 | Echo cancellation apparatus, systems, and methods |
| 6928159 | Telephone for connection to a public telephone network |
| 6925177 | Echo canceler compensating for amplifier saturation and echo ampl... |
| 6920217 | Method and apparatus for transient suppression in an integrated P... |
| 6917688 | Adaptive noise cancelling microphone system |
| 6909781 | DSL line tester |
| 6891955 | Audio volume control for computer systems |
| 6873701 | System and method for DTMF detection using likelihood ratios |
| 6873705 | Combine audio and ringing mode |
| 6865271 | Constant current line circuit with class features |
| 6856682 | System and method for processing an input signal communicated on ... |
| 6842519 | Communication with current detection |
| 6836543 | Operating surface for class functions in a telephone |
| 6831976 | Telephone line-powered power supply for ancillary equipment and m... |
| 6829336 | System and method for active filtering in a telecommunications ne... |
| 6826265 | DSL-ready pots device and method |
| 6826277 | Method for registering and searching dialing information in a com... |