Two users both on iOS. When a call comes through and it rings into iOS ringcentral completely takes over the phone. Rejecting the call just causes ringcentral to ring through a moment later. Ideally if both users reject the call the call should go to voicemail.
Hi Matt - this is because the two users are in the same call queue for a particular phone number (the flow is managed by the RingCentral admin at service.ringcentral.com - so be sure to check it if you're an admin).
In general, the functionality works more like an ignore case on a user by user basis by design. We're making some enhancements to the call queue use cases in Q3.