Method and apparatus for altering the access format of telephone

Method and apparatus for altering the access format of telephone

Method and apparatus for automated billing and crediting of...

Method and apparatus for automated provisioning and billing of c

Method and apparatus for automating telecommunications class cha

Method and apparatus for billing a fee to a party initiating...

Method and apparatus for charging a fee to a party...

Method and apparatus for communicating with one of plural...

Method and apparatus for comparing communication service...

Method and apparatus for conservation of switching exchange...

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

Method and apparatus for detecting modem tones for...

Method and apparatus for detecting service anomalies in...

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

Method and apparatus for disallowing the extension of a call thr

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