2009
EUROTECH USER MANUAL
VoIP
2
All
™
Series: 8
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16
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24 Channel Gateway User Manual
37
Using the 'Secondary IP'
If the gateway is on another LAN, you must access the SIM Server through the external IP
address. In this situation you need to set up the 'secondary IP' so the gateway will contact the
SIM Server on the external IP address and not on the internal IP address.
To setup the 'Secondary IP' do the following:
1. Go to the 'Virtual SIM' window, 'SIM Server Settings', 'General' settings.
2. Set the external IP address of the SIM Server in 'IP Address2'.
3. Press the 'Save Settings' button.
Fig: Example of SIM Server with private IP and external IP.
4. Go to the time table in the 'Ports' window. Select a SIM and mark it on the time table.
5. Mark the 'Secondary IP' checkbox
6. Save the table.
Fig: Same time slot using the Secondary IP.
Now the time table will be saved with the 'Secondary IP' address and the gateway will use this IP
address when connecting the SIM Server.
Note: Do not forget to configure the NAT (of your LAN) to forward ports 2008 and 2009 to the SIM
Server.
Chapter 6.3: Prefixes
Under the basic setting, an incoming call from a port will receive a dial tone. The Gateway will
route the call according to the prefix of the dialed number. Each port has a 200 prefixes table.
Press the Prefixes tab to see:
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