Cisco 2651 XM Series, Modular Access Router P/N: 800-20059-02The Cisco 2600 Series is an award winning series of modular multiservice access routers, providing flexible LAN and WAN configurations, multiple security options, voice and data integration, and a range of high performance processors. The wide range of features and interfaces and the flexibility of adding more than 50 modules makes the Cisco 2600 Series the ideal branch office router for today's and tomorrow's customer requirements.