Max 410/420/430 User’s Guide – Chapter 5

NOTE: The TCP start port and UDP start port parameters in the Network Configuration table must match the open firewall ports. If there are multiple Max gateways behind a firewall, this process must be repeated with different UDPPORT & TCPPORTs for each unit.

NOTE: If you have more than one Max behind the same firewall you must repeat the process for each unit opening a different UDPPORT and TCPPORT for each.

In Max-to-Max calling (when you call a Max unit from another Max), if either Max is connected to a LAN that employs a firewall, you will need to configure settings on both the Max and the firewall before Max-to-Max calls can be placed. This section will explain how to make the necessary adjustments.

1.On the Firewall:

a.Open UDP Port 6801.

b.Open an additional UDP Port in the range of 21000-65535.

c.Open a TCP Port in the range of 4000 – 4015 for 8 ports and 4000 – 4031 for 16 ports. This must not be the same number port you opened in the previous step. (The maximum number in the range is determined by the following formula: Maximum = 4000 + (number of ports * 2) – 1.)

2.Access the Network Configuration Table on Max’s Network and Voice Configuration page.

After opening the appropriate UDPPORT and TCPPORT on the firewall (or having your Broadband Service Provider open a port on the

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Net2Phone Max 420, Max 430 manual Max 410/420/430 User’s Guide Chapter