| 摘要 |
A communication method and device for preventing the media stream circuity. The method includes the following steps: a signaling layer control function entity at the calling party side obtains the called party side information; the signaling layer control function entity routes the session signaling and controls the establishment of the media stream path, and when the signaling layer control function entity determines that the network where it is located can be inter-connected directly with the network where the called party is located according to the called party side information, it gives up the interaction with the media layer gateway function entity for the network address port translation. The present invention also provides a network device for guaranteeing that the communication between media layers of the calling and called party communication entities can be performed in the shortest path. |
