The FlexWAN module for the Catalyst 6000 family of switches enables high-performance, intelligent LAN/WAN/MAN service scalability. The FlexWAN module supports a wide variety of WAN interfaces, including T1/E1, HSSI, T3/E3, T3/E3 ATM, OC-3 ATM, and OC-3 Packet over SONET (PoS) with the ability to directly interface with high-speed Synchronous Optical Network (SONET) equipment for metropolitan-area networking.The FlexWAN module accepts up to two Cisco 7200/7500 series WAN port adapters with an innovative architecture designed to deliver distributed, wire-speed network services. The flexible media and technology support provides scalable bandwidth with intelligent network services to enable delivery of next-generation applications, while providing an easy migration path for existing WAN and MAN networks.