Call control strategy for high capacity telecommunication servic

Call conversion process for a business system for a global telec

Call data collection and modification of received call distribut

Call handling method for credit and fraud management

Call management service

Call message recording for telephone systems

Call pacing method

Call pacing method

Call patterns in a communications network

Call redirection feature for relay services

Call toll processing method and call toll processing apparatus

Call tracker

Call transfer and conference with separate billing records...

Call-accounting system

Call-connecting device, call-connecting method,...

Call-disposition analyzer

Call-processing system and method

Called party response detecting apparatus

Calling card validation system and method therefor

Calling line identification adjunct for use with a communication