[nilesh]

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Hello sir, please show me here examples of Data Communications Equipment terminal? And also tell me which pins are used in Data Communications Equipment terminal?

[prince karak]

The Data Communications Equipment can be classified as equipment that transmits or receives analogue or digital signals through a network.

The DCE is works at the physical layer of the OSI model taking data generated by Data Terminal Equipment (DTE) and converting it into a signal that can then be transmitted over a communications link.

A common DCE example is a modem which works as a translator of digital and analogue signals.

Common DCE examples include:

ISDN adapters
Satellites (including base stations)
Microwave stations
NIC (network interface cards)
DCE is sometimes said to stand for Data Circuit-terminating Equipment.

D-sub connectors follow another rule for pin assignment.

25 pin DTE devices transmit on pin 2 and receive on pin 3.
25 pin DCE devices transmit on pin 3 and receive on pin 2.
9 pin DTE devices transmit on pin 3 and receive on pin 2.
9 pin DCE devices transmit on pin 2 and receive on pin 3.

Data Communications Equipment terminal:



Usage:

Federal Standard 1037C, MIL-STD-188
RS-232
Certain ITU-T standards in the V series (notably V.24 and V.35)
Certain ITU-T standards in the X series (notably X.21 and X.25)