Which describes what could done on the Expressway-E to successfully route calls from Expressway-C on the internal network to the Internet?
Click on the arrows to vote for the correct answer
A. B. C. D.C.
In order to successfully route calls from Expressway-C on the internal network to the internet, the following solutions could be implemented on Expressway-E:
A. Application layer gateway (ALG) could be enabled to bridge the media traffic: Expressway-E could be configured with ALG which can help in the traversal of firewall and NAT devices by allowing the inspection and modification of application layer traffic. Enabling ALG for certain protocols such as SIP, H.323, and RTP can help in the successful traversal of media and signaling traffic. This solution would be effective if there is a firewall or NAT device between the Expressway-C and the internet.
B. A static NAT route could be added to the firewall to bridge the two networks: If there is a firewall between the internal network and the internet, a static NAT route could be added to the firewall to bridge the two networks. This would enable the firewall to translate the IP addresses and allow the traffic to flow between the internal network and the internet. This solution would be effective if there is a firewall in place that is blocking the traffic between the internal network and the internet.
C. The Expressway-E could be enabled for Dual-NIC capability: Enabling Dual-NIC capability on the Expressway-E would allow it to be connected to both the internal and external networks. This would allow the Expressway-E to act as a bridge between the internal network and the internet. This solution would be effective if there is no firewall between the internal network and the internet, and the Expressway-E has two network interfaces that can be used.
D. The Expressway-E could be enabled for interworking: Interworking allows for the conversion of protocols and codecs between different endpoints. By enabling interworking on the Expressway-E, it can convert the protocols and codecs between the internal network and the internet. This solution would be effective if there are different protocols and codecs being used between the internal network and the internet.
Overall, the most effective solution would depend on the specific network architecture and requirements. It is important to carefully evaluate the network design and choose the appropriate solution for the specific scenario.