D-Link DVX-2000MS-5 VoiceCenter IP Phone System 5-Phone Kit for Response Point DVX-2000MS-5 VoiceCenter IP Phone System includes one DVX-2000MS PBX/Base Unit, one DVG-3104MS PSTN Gateway, five DPH-125MS IP Phones, and the Microsoft Response Point phone system software The DVX-2000MS PBX/Base Unit is the heart of VoiceCenter that runs the Microsoft Response Point phone system software The DVG-3104MS PSTN Gateway enables SMBs to connect PSTN lines* to a VoiceCenter IP-based phone system on a network The DPH-125MS IP Phone includes many standard and advanced features not found in analog phone systems By building a solid, dependable hardware platform to run a powerful yet easy to use, install, and manage phone software, D-Link and Microsoft have accomplished creating the next-generation SMB phone system