A system for processing phone calls comprising a network of servers positionable in communication with telephonic communication devices and each comprising a memory and a processor and a distributed database system comprising an ordered set of PBX Feature definitions. Each server may execute at least one PBX Feature definition of the ordered set of PBX Feature definitions comprised by the distributed database system. The ordered set of PBX Feature definitions may evaluate the current state of a phone call to generate an evaluated state of the phone call. A PBX Feature definition of the ordered set of PBX Feature definitions may perform a respective PBX Feature task responsive to the evaluated state of the phone call. Each PBX Feature definition of the ordered set of PBX Feature definitions may define and store a new state of the phone call upon performance of the PBX Feature task.