Log in through an internet browser application.  From a computer connected to the same LAN as the PBX, type the PBX IP address into the address bar of a web browser. We recommend using Chrome, Firefox or Opera, not Internet Explorer or Edge. 

Log in with the credentials supplied with your PBX.  If the PBX has an active internet connection, and this is the first time you have logged in, you will probably be taken first to the End User Licensing Agreement and the supplemental Support Agreement.  These forms must be completed and electronically signed before you can access the PBX.  Once you reach the PBX home screen, the server will automatically check for and download any recent software updates.  If the PBX cannot connect to the internet, you can still access the UI, but you will see an alert that the PBX is unable to contact the nexMatrix licensing server.

The Protel-LTS home screen looks like this: