Door Box

[MBA786]

Our ATA Poly 400 is provisioned and registered with Zoom. I connected the ATA's phone port to the door box after provisioning. I press the button on the door box after connecting, but nothing happens. The receptionist should be able to hear it, but it's not. I believe that in order for the receptionist's phone to ring, the ATA must be set up for Ring Down.

Could someone please tell me how to set up the Ring feature on the receptionist's phone?