Cisco CISCO2650 - 2650 Router Hardware Installation Manual page 104

About Serial Connections
Table 5-1
Device Type
DTE
DCE
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
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
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.
A cable providing surge protection (CAB-SS-SURGE) is also available from Cisco Systems for use with
Tip
the NM-16A/S network module. See the
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
Identifying the Device Type
Typical Connector
1
Male
2
Female
Table 5-2.
Serial Cables and Cisco Smart Serial Cables
Chapter 5
Typical Devices
Terminal
PC
Modem
CSU/DSU
Multiplexer
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
"12-in-1 Smart Serial Cables" section on page 5-4
Connecting Serial Network Modules
for
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