Cisco 16OC3/POS-SM Hardware Installation Guide - Page 70
Installing a Cisco Serial High Speed WAN Interface Card, Grounding, Cables
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Serial High Speed WICs Serial Interface Cards Installing a Cisco Serial High Speed WAN Interface Card Install the Cisco serial HWIC 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 HWIC, refer to Installing Cisco Interface Cards in Cisco Access Routers. Cables After you install the serial HWIC, use the appropriate serial cable to connect the HWIC ports to the following types of equipment: • Asynchronous modems, if connecting to analog telephone lines • Synchronous modems, data service units/channel service units (DSUs/CSUs), or other DCEs, if connecting to digital WAN lines The 4-port serial HWICs have 26-pin 12-in-1 Cisco smart serial ports, whereas the 8- and 16-port serial HWICs have 68-pin serial ports. Use the correct cable for your serial HWIC. Cables for 4-Port Serial HWICs The 4-port serial HWICs use Cisco smart serial cables. Six types of smart serial cables are available: • EIA/TIA-232 serial cable assembly • EIA/TIA-449 serial cable assembly • V.35 serial cable assembly • X.21 serial cable assembly • EIA-530 serial cable assembly • EIA-530A serial cable assembly All of these serial cables provide a 26-pin plug at the interface card end. The network end of each cable provides the physical connectors most commonly used for the interface. For example, the network end of the EIA/TIA-232 serial cable is a DB-25 connector, the most widely used EIA/TIA-232 connector. Refer to the Cisco Modular Access Router Cable Specifications for network end connectors and pinouts of these cables. The EIA-530 and EIA-530A serial cables are available in DTE format only. All other cables are available in either DTE or DCE format. OL-12843-01 10