The Cisco Unified Communications 520 for Small Business, a critical part of the Cisco Smart Business Communications System, is an affordable unified communications appliance that provides voice, data, voicemail, Automated Attendant, video, security, and wireless capabilities while integrating with existing desktop applications such as calendar, email, and customer relationship management (CRM) programs. This easy-to-manage platform supports up to 64 phones and voice mailboxes and provides flexible deployment options based on your needs - a wide array of IP phones, public switched telephone network (PSTN) interfaces, and Internet connectivity (Figures 1 through 3).