In an example embodiment, a cloud-based unified communications solution and collaboration platform is provided that includes private branch exchange (PBX) business phone service, among other services, in one interface. Furthermore, in an example embodiment, this cloud-based unified communications solution enables a feature called “call flip,” which allows a user to transfer an active phone call from one device of the user to another device of the same user, without disconnecting the phone call, and despite both devices sharing a common extension or phone number. More particularly, the system is able to detect that a user wishes to perform a “call flip”, identify the device from which the user is attempting to perform the call flip, identify the other devices associated with the user, and then ring only the other devices and not the device from which the user is attempting to perform the call flip.