Call notification service for use with call waiting
Call on-hold improvements
Call parking and paging system and method of operation
Call path resource allocation in a wireless telecommunications s
Call processing and subscriber registration systems and methods
Call processing method for delivering promotional messages
Call processing system and method for providing a variety of mes
Call processing system with call screening
Call processing system with call screening
Call processing system with call screening
Call processing system with call screening
Call processing system with call screening
Call processing system with call screening
Call processing system with facsimile processing
Call processor for facilitating call completions
Call routing based on the caller's mood
Call routing device employing continuous speech
Call routing system and method
Call screening apparatus and method
Call screening method