| 摘要 |
<p>A system and a method for choosing an outgoing path for a media flow in a Next Generation Network (NGN) are disclosed. First, an application layer signalling resolving module in a Service Control Function (SCF) resolves an application layer signalling to determine requirement of a media flow on forwarding and provides determined requirement to a Policy Decision Function (PDF); then, the PDF determines identification (ID) of an outgoing path for the media flow according to requirement of the media flow on forwarding and a policy stored by itself, and provides determined ID to a traffic forwarding control module in a Border Gateway Function (BGF); finally, the traffic forwarding control module in the BGF controls the forwarding of the media flow, and steering the media flow to the outgoing path according to the ID of the outgoing path.</p> |
