From the "Dialplan" tab, click on "Destinations" from the drop-down menu.
Click on "+ ADD" to begin your inbound numbers configuration.
Voxtelesys supports National, E164 No Plus, and E164 calling formats for 3CX dialing, these can be adjusted in the portal if you want to change your calling format.
Click on "Save" to add the inbound number. Inbound destinations are the DID/DDI, DNIS, or Alias for inbound calls.