Cisco 1601 Hardware Installation Guide - Page 90
/64-kbps DSU/CSU WICs Overview, Prerequisites for Connecting 56/64-kbps DSU/CSU WICs to a Network
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56/64-kbps DSU/CSU WAN Interface Card DSU/CSU WAN Interface Cards 56/64-kbps DSU/CSU WICs Overview The 1-port 56/64-kbps DSU/CSU WIC (WIC-1DSU-56K4) includes an integral DSU/CSU and can be configured to provide circuit-switched, dedicated, or leased-line service at 56 kbps. This WIC also supports 64-kbps dedicated lines. (See Figure 56.) Figure 56 WIC-1DSU-56K4 Front Panel 56- or 64-kbps port LEDs LED TD RD LP AL CD 41224 SEE MANUAL BEFORE INSTALLATION DSU 56K 56/64-kbps DSU/CSU WIC LEDs The 56/64-kbps DSU/CSU WIC LEDs, are shown in Figure 56. The functions of the LEDs are described in Table 12. Table 12 56/64-kbps DSU/CSU WIC LEDs LED Description TD Data is being transmitted to the DTE interface. RD Data is being received from the DTE interface. LP Internal DSU/CSU is in loopback mode. AL One of these alarm conditions is present: no receive signal, loss of frame signal from the remote station, or out of service signal from the remote station. This LED is off during normal operation. CD Internal DSU/CSU in the WIC is communicating with another DSU/CSU. Prerequisites for Connecting 56/64-kbps DSU/CSU WICs to a Network Before connecting a WIC to the network, ensure that the WIC is installed in the router, the equipment is properly grounded, and you have the proper cables for connecting the WIC to the network. This section describes the preparation necessary before connecting a 56/64-kbps DSU/CSU WIC to the network. Installing a Cisco Serial WAN Interface Card Install the Cisco serial wan interface card according to the instructions in Installing Cisco Interface Cards in Cisco Access Routers. Grounding Ensure that the equipment you are working with is properly grounded. For instructions on grounding your serial WIC, refer to Installing Cisco Interface Cards in Cisco Access Routers. OL-12845-01 2