METHOD, DEVICE AND SYSTEM FOR MEDIA FLOW TRAVERSING NAT

摘要

A method for media flow traversing NAT is provided to solve the problem that the BGF cannot correctly forward media flow in the network because of the overlap of different user addresses. In the method, a first network entity obtains the address information of the media flow and the identifier of the user network, then sends said address information and identifier to the BGF, which will then build the media mapping relation for media flow forwarding based on the address information, and bind said identifier in the mapping relation. The corresponding device and system are also given in the invention.