This product is a replacement for: Digium - Switchvox AA305 Appliance, North America (V2) (1AS3050010LF) Switchvox 310 is ideal for medium-sized businesses with shelf space or a computer rack, that want the power of a server-class PBX. Each Switchvox Unified Communications (UC) system supports VoIP and traditional calling while also incorporating many key features to enable your business communications.