The Cisco 7600 SIP-400 helps enable high-performance, intelligent wide- and metropolitan-area network (WAN/MAN) services. Enterprises and service providers can take full advantage of the increased scalability, performance, and rich features offered by the Cisco 7600 SIP-400, along with the many options for WAN aggregation and connectivity offered in the SPA/SIP portfolio. The Cisco 7600 SIP-400 accepts up to four Cisco SPAs, including OC-3 ATM, OC-12 ATM, OC-3 packet over SONET/SDH (POS), and OC-12 POS, for MAN and WAN connectivity.The Cisco 7600 SIP-400 simplifies network design and deployment by allowing consolidation of LAN, WAN, and MAN interfaces into a single, highly scalable platform. The Cisco 7600 Series delivers advanced flexibility, supporting any mix of media or traffic within a common system, software, and chassis, thereby easing and simplifying network configuration and installation tasks and speeding service delivery. Converged data, voice, and video traffic can be transported transparently from end to end across an interconnected LAN, WAN, or MAN, with the ability to manage thousands of simultaneous traffic flows at wire speed with granular QoS and security control.The Cisco 7600 SIP-400 helps enable the Cisco 7600 Series to perform high-end WAN aggregation based on Ethernet, point-to-point circuits, Frame Relay, ATM, or POS. The rich QoS features and distributed processing attributes of the Cisco 7600 SIP-400 make it a cornerstone of a highly scalable WAN aggregation solution. Higher-layer applications can easily be supported on this end-to-end network to allow intelligent data, voice, video, and security services - all on the same platform - for integrated, easy-to-use application delivery and control.