Serial and asynchronous high-speed WAN interface cards (HWICs) provide highly flexible connections for Cisco ® 1800, 1900, 2800, 2900, 3800, and 3900 Series Integrated Services Routers. These HWICs help customers enable applications such as WAN access, legacy protocol transport, console server, and dial access server. The HWIC-1DSU-T1 facilitates several important applications such as WAN access and aggregation. legacy protocol transport, and Dial access server.
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