HP AdvanceStack Internet Router manual Synchronous Serial Connections, Typical DTE and DCE Devices

Installation

Installing the HP AdvanceStack Internet Router

Preparing to Connect to a Network

Synchronous Serial Connections

Before you connect a device to the synchronous serial port, you will need to know the following:

■The type of device, DTE or DCE, you are connecting to the synchronous serial interface

■The type of connector, male or female, required to connect to the device.

■The signaling standard required by the device.

DTE or DCE

A device that communicates over a synchronous serial interface is either a DTE or DCE device. A DCE device provides a clock signal that paces the communications between the devices and the router. A DTE device does not provide a clock signal. DTE devices usually connect to DCE devices. The documentation that came with the device should indicate whether it is a DTE or DCE device. (Some devices have a jumper to select either mode.) If you cannot find the information in the documentation, refer to table 2-2 to help you select the proper device type.

Table 2-2. Typical DTE and DCE Devices

Device Type	Gender	Typical Devices
DTE	Male1	* Terminal
		* PC
DCE	Female2	* Modem
		* CSU/DSU3
		* 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.

3.Channel service unit/data service unit.

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