The Cisco Unified Communications 500 Series, part of the Cisco Smart Business Communications System, is an all-in-one, simple, smart, and affordable unified communications platform designed specifically for growing businesses with fewer than 50 employees. It takes advantage of industry-leading, business-class, proven unified communications technologies (voice, data, security and wireless) integrated into one platform, and enables integration with commonly used desktop applications such as Microsoft Outlook, Internet Explorer, and customer relationship management (CRM) software.