This list highlights the vendors that support native registration to a Lync server:
• Polycom HDX—The Polycom HDX codec series supports native Lync registration out-of-the-box. The RTV license key can be added to any of these devices.
• LifeSize Team and Passport—The Team 220, Unity Series, and LifeSize Passport all support native Lync registration, SRTP for media encryption, and Edge Server traversal.