Intelligent call screening in a virtual communications network

Intelligent multifunction device for analog telephone subscriber

Interfacing a communication switch to a non-embedded device...

Line information security interface for TAPI service provider

Line selection method and line selection system for private...

Lockout apparatus for controlling communications on a single...

Lockout telephone

Managing access to resources and services utilizing call...

Mechanism for rejecting collect calls

Message-based interface for phone fraud system

Method and apparatus for controlling outgoing calls on a telepho

Method and apparatus for controlling telephone line access

Method and apparatus for defeating predictive telemarketing...

Method and apparatus for detecting a secondary destination of a

Method and apparatus for detecting a secondary destination...

Method and apparatus for detecting an attempted three-way confer

Method and apparatus for detecting and responding to hook flash

Method and apparatus for detecting the number of speakers on...

Method and apparatus for intelligent network call handling in a

Method and apparatus for intercepting potentially fraudulent