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The article has been updated successfully but requires approval before it is published.VoIP NAT Test Tool Configuration
10/2016: This article is outdated. Refer to article 1167 for instructions. Click here to open that article.This guide explains how to use AltiGen's VoIP/NAT test tool to assess whether a customer's NAT device is compatible with the MaxCS system's NAT Traversal scheme.
MaxCS will support IP phones behind NAT with most NAT/Firewall devices. If an IP phone does not work on a
particular NAT, one of the following issues is likely the cause of the conflict:
MaxCS will support IP phones behind NAT with most NAT/Firewall devices. If an IP phone does not work on a particular NAT, one of the following issues is likely the cause of the conflict:
- The NAT device is blocking outbound traffic (in this scenario, check the NAT device settings and firewall settings)
- The NAT device is interpreting the SIP REGISTER and other SIP messages as an attack (in this scenario, check the NAT device settings, firewall settings, and security settings)
- The NAT device is performing SIP ALG on port 10060 and is causing a conflict with the MaxCS system’s SIP ALG (Currently, only the EdgeMarc implementation SIP ALG is certified and supported)
- The NAT device’s UDP session expires within 60 seconds (Check for "consistent NAT" on SonicWall firewalls)
- The NAT device has some other issues with users browsing the Internet
This test tool can be used both before deployment, to check for potential NAT traversal conflicts, and as a troubleshooting tool post-deployment.
The tool is located here:
http://nat.atgncloud.com:8080/NatTest/test.htm
Attachments
- NAT Test Tool.pdf (573,770 bytes)
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Last Updated
21st of October, 2016
