The 6725ip and 6721ip IP phones, Optimized for Microsoft Communicator, are Aastraâ€™s latest additions to its award winning line of IP phones. These new models feature embedded Microsoft Communicator Phone Edition software offering access and interop- erability with Microsoft Communications Server â€œ14â€ features and capabilities. Both models support Gigabit Ethernet interfaces while the 6725ip also includes USB interfaces. When connected to Microsoft Communications Server â€œ14â€, they become power- ful Unified Communications (UC) devices. These new IP phones enjoy the same exceptional voice quality and proven Aastra reliability in a stylish global design.