Max 8/16 and T1/E1 User’s Guide – Chapter 4
Page 24
In this example, the range to be opened is 7000 to 7015. The range
is determined by the following formula:
Max Default Start Port + (Number of Max Ports * 2) – 1
or in this example:
7000 + (8*2) – 1 = 7015
The table shows the firewall port assignments based on the default
start port. If the Max gateway default start ports noted above are in
conflict with your corporate firewall settings, you may assign port
numbers in the range of 4000 to 65000 by applying the same
principle illustrated in the table.
The TCP Port and UDP Port start parameters in the Network
Configuration table must match the open firewall ports.
NOTE: If you have more than one Max behind the same
firewall, you must repeat the process for each unit,
opening a different UDP PORT and TCP PORT for each.
NOTE: The Max 8/16 and T1/E1 gateway will not work
behind a proxy server.
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. In the Network Configuration Table on Max’s Network and
Voice Configuration page:
After opening the appropriate UDP Port and TCP Port on the
firewall, you must specify these open ports on the Max
device(s):
a. Change the TCP Start Port to the port you opened in
step 1-c above. For example, if you opened TCP Port
21057 in step 1-c, enter
21057
for the TCP Start Port
