Cisco Cisco Catalyst 4000 Supervisor Engine II Guía De Instalación
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Connecting Cisco Serial Network Modules to the
Network
Network
Revised: May 1, 2008, OL-12809-01
This guide describes how to connect Cisco serial network modules to your network. It contains the
following sections:
following sections:
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About Serial Connections
Before you connect a device to a serial port, you need to know the following:
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Type of device—data terminal equipment (DTE) or data communications equipment (DCE)—you
are connecting to
are connecting to
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Type of connector, male or female, needed to connect to the device
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Signaling standard required by the device
About DTE and DCE Devices
A device that communicates over a synchronous serial interface is either a DTE or a DCE device. A DCE
device provides a clock signal between the device and the router. A DTE device does not provide a clock
signal. DTE devices usually connect to DCE devices. The documentation that accompanied the device
device provides a clock signal between the device and the router. A DTE device does not provide a clock
signal. DTE devices usually connect to DCE devices. The documentation that accompanied the device