Metallic current limiter

Method and an arrangement for securing an ADSL connection

Method and apparatus for a differential feedback in an...

Method and apparatus for a high efficiency line driver

Method and apparatus for a high efficiency line driver

Method and apparatus for a single power supply for dual...

Method and apparatus for adapting a phone for use in network...

Method and apparatus for adaptive DC level control

Method and apparatus for applying multiple speech processing fea

Method and apparatus for calculating DC offset in a digital...

Method and apparatus for canceling echo accounting for delay var

Method and apparatus for cancelling echo originating from a...

Method and apparatus for connecting broadband voice and data...

Method and apparatus for controlling the input impedance of...

Method and apparatus for DC feed

Method and apparatus for DC feed control

Method and apparatus for deriving power from a clock signal...

Method and apparatus for detecting a compatible phantom...

Method and apparatus for detecting a compatible phantom...

Method and apparatus for detecting data port usage