A method of sip traversing symmetric NAT devices based on ice
A device and technology of both parties, applied in the field of ICE-based SIP traversal SymmetricNAT devices, can solve the problems of clients ignoring network topology, instability, increase delay overhead, etc., to ensure service quality, improve the probability of direct connection, and solve flexible problems Effects of Sex and Effectiveness
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[0030] For a better understanding of the present invention, some terms are explained as follows:
[0031] STUN (Session Traversal Utilities for NAT): NAT session penetration utility;
[0032] TURN (Traversal Using Relay NAT): traverse NAT through Relay;
[0033] Agent: It is related to the protocol implementation in the request / response exchange. In a request / response exchange, there are two related Agents;
[0034] Peer: From the point of view of an Agent in a session, its peer is another Agent. Further, from the point of view of the requester, its peer is the responder. From the point of view of the responder, its peer is requester;
[0035]nominated pair: finally select the address pair for audio and video transmission;
[0036] valid pair: A valid address pair that enables the communication parties to communicate with each other, and select the one with the highest priority as the nominated pair;
[0037] Hole punching: the internal host ip and port access the destinat...
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