Cisco WS-X3011 Hinweis zur Konfiguration - Seite 10

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Installing the Router Card

X.21 Connections

The X.21 connector uses a 15-pin connector for balanced circuits and is commonly used in the

United Kingdom to connect to the public data network. X.21 relocates some of the logic functions

to the DTE and DCE interfaces and, as a result, requires fewer circuits and a smaller connector than

EIA/TIA-232.

The network end of the X.21 serial transition cable (not included) is a standard DB-15 connector, as

shown in Figure 6. The end that connects to the serial port on the router card has a DB-60 connector.

X.21 cables are available with a plug or receptacle in either DTE or DCE mode. To order a cable,

refer to the section "Obtaining Service and Support" at the end of this document.

Figure 6

EIA-530 Connections

The EIA-530 standard, which supports balanced transmission, provides the increased functionality,

speed, and distance of EIA/TIA-449 on the smaller, DB-25 connector used for EIA/TIA-232, instead

of the 37-pin connector used for EIA/TIA-449. Like EIA/TIA-449, EIA-530 refers to the electrical

speciﬁcations of EIA/TIA-422 and EIA/TIA-423. Although the speciﬁcation recommends a

maximum speed of 2 Mbps, EIA-530 is used successfully at 4 Mbps or faster speeds over short

distances.

The EIA-530 serial transition cable (not included) is available in DTE mode only. The network end

of the EIA-530 adapter cable is a standard DB-25 plug commonly used for EIA/TIA-232

connections, as shown in Figure 7. The end that connects to the serial port on the router card has a

DB-60 connector. To order a cable, refer to the section "Obtaining Service and Support" at the end

of this document.

Figure 7

Installing the Router Card

This section guides you through the installation of the router card and includes the following

subsections:

•

10 Router Card (WS-X3011) Conﬁguration Note

X.21 Serial Transition Cable Connectors, Network End

EIA-530 Serial Transition Cable Connector, Network End

Required Tools and Equipment

Connecting the Console Terminal

Connecting to a Network

DTE

DCE

DTE