Used Cisco, 1-Port T1/Fractional T1 DSU/CSU WAN Interface Card for Cisco 1800, 1900, 2800, 2900, 3800, and 3900 Series Integrated Services Routers
The 1-port Cisco EtherSwitch 10/100 high-speed WAN interface card (HWIC) supported on various Cisco series integrated services routers offer small-to-large-size businesses and enterprise branch office customers the option to integrate switching and routing in one device. The HWIC-1DSU-T1 operates at 1.544 Mbps and has synchronous support. This combination offers ease of configuration, deployment, and management while using the powerful characteristics of Cisco routing and Cisco Catalyst switching features.
Compatible with the following Cisco routers:
CISCO2811, 2821and 2851
CISCO2901, 2911, 2921and 2951
CISCO3825 and 3845
CISCO3925 and 3945