To add a PBX object to the system, drill-down to the Directory level where you want to add the PBX and click on the New object tab, as shown below:
In the new window that opens, select the PBX object from the Other object list, enter a relevant name and click on the button. The name given to the PBX is usually its make or model ID. In the example below, a Cisco UCM PBX is being added in the UK \ London site.
The PBX object will appear in the Directory as follows: