Method for determining concurrent voice over IP calls

Method for determining concurrrent voice over IP calls

Method for divisional billing and device thereof

Method for enabling a transaction between a terminal user and a

Method for enabling communications between calling an called mul

Method for establishing customized billing arrangements for a ca

Method for estimating traffic density in mobile telephone networ

Method for flexible charging of fees for services and...

Method for flexible charging of IP multimedia communication...

Method for flexible formatting of call detail records and switch

Method for identifying the originating network at the terminatin

Method for implementing transaction-based billing for...

Method for improved automatic message accounting in telephony

Method for indicating a communicating duration of an office line

Method for mapping call detail data into a database for...

Method for measuring quality of service in a...

Method for monitoring telephone completion data

Method for network traffic regulation and management at a mediat

Method for obtaining billing validation of directory number acco

Method for overload control in a telecommunications network...