Before you select SuiteCRM as your CRM on the PBX, you should install the module on SuiteCRM following this guide





Now, you must match your users from the PBX to SugarCRM/SuiteCRM users.

Go to Admin > User Management > Edit the user you want to match, go to CRM tab and match your PBX user with your SugarCRM/SuiteCRM user.

Additionally, if you use Zulu, you can choose to use "On Call Popup" option under your Inbound route or your queues.

Go to Connectivity > Inbound Routes > Select your route > Zulu Tab

Or Applications > Queues > Edit your Queue > Zulu Tab