Telephonic communications – With usage measurement – Call charge metering or monitoring
Reexamination Certificate
2005-08-09
2005-08-09
Tran, Quoc (Department: 2643)
Telephonic communications
With usage measurement
Call charge metering or monitoring
C379S114050, C379S114210, C370S495000
Reexamination Certificate
active
06928150
ABSTRACT:
An approach for providing charging information of a call established over a data network is disclosed. A communications system includes a user agent that initiates a call to another user agent according to an application layer protocol. The system also includes a network element that assists in establishing the call and forwards information indicating that the call is chargeable to the user agent. The present invention has particular applicability to SIP (Session Initiation Protocol) IP (Internet Protocol) telephony services.
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MCI Inc.
Tran Quoc
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