Management system for public and private switched networks

Marketing control program

Mass call defense

Method and apparatus for administration of circuit...

Method and apparatus for administration of circuit...

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

Method and apparatus for conservation of switching exchange...

Method and apparatus for disallowing the extension of a call thr

Method and apparatus for monitoring blocked calls in a...

Method and apparatus for monitoring blocked calls in a...

Method and apparatus for prepayment of telecommunication connect

Method and apparatus for producing information regarding the...

Method and apparatus for providing answer supervision and an aut

Method and apparatus for providing subscribers with...

Method and apparatus for providing user access via multiple...

Method and apparatus for reducing inbound traffic congestion...

Method and apparatus for telecommunications having automatic...

Method and apparatus for the billing of value-added communicatio

Method and apparatus of detection of inter-carrier looping

Method and apparatus of detection of inter-carrier looping