Upgrading to Lync
Microsoft Lync Server 2010 includes several new features not available in Office Communications Server. Upgrade now to take advantage of a more unified experience, easier connection and collaboration capabilities, richer conferencing, complete Enterprise Voice features, powerful deployment and management tools, and added extensibility.
Lync can also work in tandem with Office Communications Server, so that you can run both platforms simultaneously without creating system conflicts.
Forefront Security for Office Communications Server
provides fast and effective protection against IM-based malware by including multiple scanning engines from industry-leading security partners and helps reduce corporate liability by blocking instant messaging containing inappropriate content. The estimated annual subscription price for an organization with at least five users is $6.92 U.S. per user, per year.