Polycom VVX 300 Business Edition for Skype - 2200-46135-019 Polycom Skype for Business 2200-46135-019. Corded Voice Over IP Phone / SIP Voice Over Internet Protocol (VoIP) / 6-Line Operation. Acoustic Fence / Remote Missed Call Notification. Optional AC Adapter (Not Included). Includes a single license for compatibility with Skype for Business.