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3CX Phone System for Windows System for Windows
Page 17
Screenshot 1 - Activating your license
Enter your license key, Company, Contact Name, E-mail, Telephone and Country and
click on “Activate” to activate your license. This information will be sent to our license key
server and your license key and installation will be activated. You will need to do this
each time you re-install 3CX Phone System or install an upgrade.
Firewall configuration
There are 2 scenarios in which you will need to update your firewall configuration:
1.
If your PBX server is behind a NAT / firewall and you intend to use a VOIP provider
2.
If you are using a firewall on the PBX server itself, for example Windows Firewall
3CX Phone System behind a NAT / firewall
The best place for 3CX Phone System is on a machine behind the firewall. This
configuration is easier and more secure. If you will just use PSTN lines, you don’t even
need to make any changes to your firewall configuration.
If you intend to use a VOIP Provider, then you will need to open the following ports to
allow 3CX Phone System to communicate with the VOIP Provider: