| 摘要 |
Systems and methods for ensuring that control protocols can be used between Media Gateways 130, 140 and Media Gateway Controllers 110 that reside on separate IP networks 120, 150 . Network Address Translation (NAT) is strategically implemented to inspect and translate control protocol messages exchanged between nodes on separate IP networks. One method is to add NAT intelligence to a firewall/router 160 giving it the ability to inspect and translate the IP addresses within control protocol messages. Another method is to have a firewall/router 160 forward control protocol messages to a separate NAT server 170 to inspect and translate the IP addresses within control protocol messages. The former implementation places a significant amount of real-time work on the firewall/router which can affect its performance in its core duties. The latter implementation does not affect performance but requires deploying additional hardware.
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