Cisco 3825 Hardware Installation Guide - Page 104
About Serial Cables Used with Cisco2600 Series, Cisco3600Series, and Cisco ..., Device Type - cable modem
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About Serial Connections Chapter 5 Connecting Serial Network Modules Table 5-1 Identifying the Device Type Device Type DTE Typical Connector Typical Devices Male1 Terminal DCE Female2 PC Modem CSU/DSU Multiplexer 1. If pins protrude from the base of the connector, the connector is male. 2. If the connector has holes to accept pins, the connector is female. Note Serial ports configured as synchronous DTE require external clocking from a channel service unit/data service unit (CSU/DSU) WAN interface card or other DCE device. About Serial Cables Used with Cisco 2600 Series, Cisco 3600 Series, Cisco 3700 Series, and Cisco MWR 1941-DC Routers Cisco Systems offers 10 types of serial cables (also called serial adapter cables or transition cables) as listed in Table 5-2. Table 5-2 Serial Cables and Cisco Smart Serial Cables Standard Serial Cables EIA/TIA-232 serial cable EIA/TIA-449 serial cable V.35 serial cable X.21 serial cable EIA/TIA-530 serial cable Cisco Smart Serial Cables EIA/TIA-232 Smart Serial cable EIA/TIA-449 Smart Serial cable V.35 Smart Serial cable X.21 Smart Serial cable EIA/TIA-530 Smart Serial cable EIA/TIA-530A Smart Serial cable The documentation for the device you plan to connect to the serial port should indicate which interface is used. You can then order a serial transition cable of the correct type. Tip A cable providing surge protection (CAB-SS-SURGE) is also available from Cisco Systems for use with the NM-16A/S network module. See the "12-in-1 Smart Serial Cables" section on page 5-4 for instructions on connecting the surge protector cable. A standard serial cable uses a universal 60-pin plug at the network module or WAN interface card end. The Smart Serial cable uses a 12-in-1 Smart Serial connector designed by Cisco. 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. Cisco Network Modules Hardware Installation Guide 5-2 OL-2485-20