Download Microsoft Lync Phone Edition for Aastra 6721ip and Aastra 6725ip from Official Microsoft Download Center

A woman uses a Surface Pro and Surface Pen

This is your 365

Discover what's possible every day with Office 365

Person using Power BI Desktop

Power BI

Transform data into actionable insights with dashboards and reports

Microsoft Lync Phone Edition for Aastra 6721ip and Aastra 6725ip

Important! Selecting a language below will dynamically change the complete page content to that language.

Select Language:
Microsoft® Lync™ Phone Edition for Aastra 6721ip and Aastra 6725ip is the first generation of software designed specifically for the phones from Aastra to interoperate with Microsoft® Lync™ Server 2010 or Microsoft® Lync™ Server 2013. Lync Phone Edition provides traditional and advanced telephony features, integrated security, manageability and much more.