Method and apparatus for dynamic abbreviated dialing assignment

Method and apparatus for programming guestroom telephones

Method and apparatus for pulse/tone detection and selection

Method and apparatus for registering multiple phone numbers...

Method and apparatus for remote doorbell answering

Method and apparatus for returning a false special...

Method and apparatus for routing a dialed telephone number

Method and apparatus for searching a database

Method and apparatus for speed dialing via one-touch and two-tou

Method and apparatus for the secure communication of data

Method and apparatus for transmitting address changes

Method and system for detecting the state of dialing a...

Method and system for generation of tone signals over a transmis

Method and system for implementing an intelligent redial system

Method and system for routing calls to desire discount...

Method and system for telephone number change notification...

Method for accessing a country code or an area code stored...

Method for adapting supplementary equipment to an analog...

Method for automatic input and transmission of pass word in...

Method for automatically composing a telephone dialing string