Once you enter a domain, select the "Trunks" tab.
From the "Trunks" tab, select "SIP Trunks" from the drop-down menu.
Click on the "+ | Add" button.
Create service provider trunk (SIP trunks):
Notes:
You are able to add multiple DIDs, for example: 7019299797 7019299798
Voxtelesys also supports IP authentication.