The BlackBerry Mobile Voice System (MVS) is a server-based product designed to sit between your existing BES and your IP-capable PBX, effectively turning your BlackBerry handheld device into a remote extension of the corporate telephone system: if you are out of the office, or just not at your desk, incoming calls to your desk DDI can be forwarded automatically to your mobile; and similarly any calls you make from your handheld can be routed out through the remote PBX so that calls appear as having originated from your office (and can be billed accordingly using the PBX’s least-cost routing ca