NETWORK ADDRESS TRANSLATION ADDRESS MAPPING TABLE MAINTAINING METHOD, MEDIA GATEWAY AND ITS CONTROLLER

摘要

A network address translation address mapping table maintaining method, media gateway and its controller are provided. The network address translation address mapping table maintaining method includes that: the media gateway establishes the network address translation address mapping table context according to the indication of the media gateway controller, and the network address translation address mapping table context saves the network address translation address mapping items; the operation is made on the network address translation address mapping table context so as to maintain the network address translation address mapping items saved in the network address translation address mapping table context. Embodiments of the present invention realizes to be capable of maintaining the network address translation address mapping table on the media gateway by operating on the established network address translation address mapping table context.