Method and apparatus for comparing communication service...

Method and apparatus for controlling rating of calls to pay...

Method and apparatus for detecting modem tones for...

Method and apparatus for detection and prevention of calling...

Method and apparatus for efficiently utilizing a...

Method and apparatus for efficiently utilizing a...

Method and apparatus for evaluating possible 3-way call events

Method and apparatus for facilitating the completing of telephon

Method and apparatus for facilitating the making of card calls

Method and apparatus for forwarding a caller identification...

Method and apparatus for forwarding caller identification for a

Method and apparatus for generating a metering pulse

Method and apparatus for generating and/or updating an...

Method and apparatus for identifying a rate center using a...

Method and apparatus for implementing a pre-paid card service

Method and apparatus for interfacing computers to exchange telep

Method and apparatus for issuing a credit

Method and apparatus for making a long distance telephone call

Method and apparatus for management of remotely-deployed station

Method and apparatus for managing signaling links in a...