Message and ringing signaling device for a telephone installatio

Method and apparatus enabling a calling telephone handset to...

Method and apparatus for controlling the ring volume of a teleph

Method and apparatus for customizing an audio file in a...

Method and apparatus for implementing a bandlimited ringing...

Method and apparatus for processing an incoming telephone call s

Method and apparatus for producing ringing tones in a...

Method and apparatus for providing customized ringbacks

Method and apparatus for selecting an alert mode based on...

Method and circuit for detecting ring and caller-ID signals

Method and system for audibly announcing an indication of an...

Method and system for called party to provide indication...

Method and system for event notifications

Method for audible caller name announcement with call list featu

Method for communicating

Method for monitoring telephone call progress

Method for ring signal detection

Method for triggering content download during call setup

Method of automatically changing a calling mode of telephone...

Method of calling up called party, communication equipment,...