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Chapter 4. How To Configure SIP
Here are the settings needed for this. It is assumed that the Telecommuting Module already has a network
configuration. Only the additional SIP settings are listed.
Networks and Computers
The Telecommuting Module must know the network structure to be able to function properly. On the Networks
and Computers page, you define all networks which the Telecommuting Module should serve and which are not
reached through the default gateway of the firewall. All computers that can reach each other without having to go
through the firewall connected to the Telecommuting Module should be grouped in one network.
You can also define networks and parts of networks for other configuration purposes.
Surroundings
To make the Telecommuting Module aware of the network structure, the networks defined above should be listed on
the Surroundings page.
One effect of this is that traffic between two users on different networks, or between one of the listed networks and
a network not listed here, is NAT:ed.
Another effect is that for connections between two users on the same network, or on networks where neither is
listed in Surroundings, no ports for RTP sessions will be opened, since the Telecommuting Module assumes that
they are both on the same side of the firewall.
Normally, at least one network should be listed here. If no networks are listed, the Telecommuting Module will not
perform NAT for any traffic.
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