Communicate effectively by reaching the right resource the first time. Now your small business can deploy an affordable, easy-to-manage communications system with the industry-leading Cisco Unified Communications 500 Series for Small Business. Simple to manage, the 500 Series supports up to 50 users (with expansion capabilities up to 64 users) in flexible deployment models based on your needs. It supports a wide array of IP phone models, public switched telephone network (PSTN) interfaces, and Internet connectivity. The 500 Series solution eliminates the need for multiple servers and combines voice, data, video, security, and wireless capabilities. It also integrates with existing desktop applications such as calendar, e-mail, and customer relationship management (CRM) programs.