Go to the System section, and under the SIP tab do the following:
Go to SIP accounts.
Click create a new account.
Select Active.
Select Make Default.
In the Name field, enter a name to identify the account.
Note: The display name has no impact on the registration with Sipelia.
In the User ID, Authentication ID, and the Caller ID fields, type the extension number that was assigned when you added the SIP intercom in Security Center.
In the Domain and Registrar fields, enter the IP address of the Sipelia Server.
In the Password field, enter the password that was set when you added the SIP intercom in Security Center.
(Optional) Select Answer automatically to enable the intercom to auto-answer calls.
If the device is properly registered with Sipelia, there should be an OK (200) message in the Status column.