A device for lifting a handset

A device for transparent interaction between an ic card and...

A digital line card for interfacing a remotely located...

A double talk activity detector and method for an echo...

A downlink activity and double talk probability detector and...

A dsl-compatible pots line card

A dynamically customizable smart phonebook

A facilitating fault tolerance in a rf amplifier system

A fraud control system for processing calls with an...

A handset port interface including dc measurement and...

A hybrid balance and combination codec filter circuit

A line interface module

A line powered coder/decoder (codec)

A low insertion loss current sense circuit

A low insertion loss current sense circuit for line cards

A mass-scale, user-independent, device-independent, voice...

A message arrangement and method for implementing a digital...

A method and a device for telecommunication

A method and an apparatus for exchanging information between...

A method and an apparatus for requesting a service in a network