Standard x.25 specify DTE / DCE Interface - Networking

Q.  What does the Standard x.25 specify?
- Published on 26 Aug 15

a. DTE / DCE Interface
b. Data bit rate
c. Start - Stop Data
d. Dial Access

ANSWER: DTE / DCE Interface

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    Discussion

  • Prajakta Pandit   -Posted on 23 Oct 15

    - X.25 is an ITU-T standard protocol, which is mostly used for packet switched wide area network (WAN) communication.

    - X.25 was developed before the OSI reference model, X.25 supports functionality which is not found in the OSI network layer.

    - It is designed as three layers, which correspond closely to the lower three layers of the seven-layer OSI model.

    - X.25 standard specify DTE / DCE interface which is allowed to establish virtual calls and permanent virtual circuits.

    - X.25 network has a logical channel identifiers that identify a specific logical channel between a DTE (subscriber appliance) and DCE (network).

    - It has only local significance on the link between the subscriber and the network.

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