| 摘要 |
The present invention relates to a method and system for inspecting a session in a packet data network, wherein a set-up message is selectively routed to a predetermined server node ( 4001, 4002 ) and processed there. A media resource function ( 3021, 3022 ) is controlled based on the processing so as to bind incoming and outgoing data streams in order to relay the session via the media resource function. Thereby, a mechanism for providing charging, filtering and logging services for sessions, such as peer-to-peer chat sessions, is provided without requiring any new network entity or modification of existing network specifications.
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