DESC: The Cisco SR 520 T1 Secure Router provides simple, secure, affordable T1 data connectivity for small businesses. As part of the Cisco Small Business Pro Series, the SR 520 T1 is easy to deploy and manage. The SR 520 T1 can also be combined with other Pro Series products in powerful, integrated systems that a small business can build over time. The SR 520 T1 is supported by Cisco Small Business Support Center locations worldwide, an online support community, and with the available Cisco Small Business Pro Service, which delivers 3-year peace of mind support, including next-business-day replacement, if necessary.