Patent ID: 8605728

Claim:
A method for implementing traversal of multimedia protocols to enable a terminal in a private network to access a public network with a common address, the method comprising: acquiring, by the terminal in the private network, an address of a terminal in a public network for sending media streams; sending, by the terminal in the private network, a redirect packet to the terminal in the public network, in which a destination address of the redirect packet is the address of the terminal in the public network for sending media streams; wherein a source address in the redirect packet is replaced with the common address and a mapping relationship is established between the source address in the redirect packet before the replacement and the common address in the redirect packet after the replacement; wherein the terminal in the private network is operable for receiving the media streams from the terminal in the public network; wherein a destination address of the media streams is the common address which is replaced with the source address of the terminal in the private network in accordance with the mapping relationship; and wherein the terminal in the private network sends redirect packets periodically to the terminal in the public network via an address translating device, to make the address translating device refresh timeout time for the mapping relationship.