Method and apparatus for processing charges for a communication

Method and apparatus for providing answer supervision and an aut

Method and apparatus for providing multi-network virtual service

Method and apparatus for providing pre-pay and post-pay...

Method and apparatus for providing prepaid local telephone...

Method and apparatus for providing prepaid local telephone...

Method and apparatus for providing prepaid local telephone...

Method and apparatus for providing prepaid...

Method and apparatus for providing prepaid...

Method and apparatus for providing telephone billing and authent

Method and apparatus for providing telephone calling card valida

Method and apparatus for real-time billing account query

Method and apparatus for retroactively updating a...

Method and apparatus for screening telephone calls

Method and apparatus for selective post-call audio logo/message

Method and apparatus for storing call feature data

Method and apparatus for telephone call sub-billing

Method and apparatus for the billing of value-added communicatio

Method and apparatus for the billing of value-added communicatio

Method and apparatus for tracing a specific communication