Using Ring Groups in lieu of Park and Page is a viable option.
- Set up a Ring Group including everyone that is expected to answer transferred calls.
- Set "Display ring group name to members in incoming calls?" to YES
- Set the Failover of the Ring Group to the receptionist.
Transfer the outside caller to the Ring Group giving everyone in the group the opportunity to answer the call. If the call goes unanswered it rings back to the receptionist. The name of the Ring Group is displayed to the receptionist allowing him to respond accordingly.