Before starting the configuration, we assume:

• Kerio Operator is up and running.
• You have at least one other SIP phone that allows you to place a test call.
• Your NeoGate TB400 is connected to your LAN and you have access to its web configuration interface.
• You have one EuroISDN line connected to the 1st BRI port on the NeoGate.
• You have two external phone numbers assigned to your EuroISDN line.
• You know the signaling type for your ISDN line (point-to-point or point-to-multipoint).

In the example below:

• The Kerio Operator IP address is 10.1.2.95.
• The NeoGate TB400 IP address is 10.1.2.200.
• The two external phone numbers are 300123456 and 300123457.

Connect to the web administration interface of your TB400 and do the following steps:

1. Go to the BRI Settings > Module List screen and open the edit dialog for module BRI1.
2. Set Signaling to BRI-CPECustomer-premises equipment - Provider's devices that are physically located on the customer's premises. or BRI-CPE-PTMP depending on whether your line uses point-to-point or point to multi-point signaling, respectively.
3. Switch to the DOD Settings section in the edit dialog and key in the first external phone number (300123456) in both the DOD start from and Associated number start from fields.
4. Click Add DOD and add your second external number (300123457) as done in the previous step.
5. Click Save to close the edit dialog.

Configuring external numbers

6. Go to the SIP Settings > Trunk screen.
7. Select VoIPVoice over Internet protocol - A digital telephone system that uses the internet as the transmission medium, rather than the PSTN. Account.
8. Set the Type field to SIP and Transport to UDPUser Datagram Protocol - Ensures packet transmission..
9. Type your first external phone number (300123456) into the Account field.
10. Type some complex password into the Password field.
11. Click Save.

Configuring VoIP account in TB400

12. Click Apply Changes.

1. Connect to your Kerio Operator administration GUI and go to the Call Routing screen.
2. Create a new SIP interface. Enter your external numbers separated with comma in the first screen of the Add SIP Interface wizard. For example, 300123456,300123457.
3. In the second screen of the Add SIP Interface wizard, select an extension to receive calls from this interface and set a dial-out prefixCountry codes, area codes, a number, or a set of numbers that are dialed before the telephone numbers. (in our example, let’s use 9 as the prefix).
4. Enter the following values in the third screen:

1. Key in the gateway’s IP address (10.1.2.200) in the Hostname or IP address field.
2. Port number should be 5060.
3. The Username should be your phone number (300123456).
4. Key in your TB400 VoIP account password.
5. Must register with the Registrar or Proxy should remain checked.