Data Link Protocol

  • William J. Barksdale
Part of the Applications of Communications Theory book series (ACTH)


In the preceding chapter the mechanical and electrical, i.e., physical, interface between DTE and DCE was considered, but such an interface alone is usually insufficient to handle conventional digital telecommunications between remotely located terminals. The reason is that the physical level, along with the accompanying modem, only passes bits blindly without any regard for what the bits mean or how they are grouped together. There is no indication, for example, as to where characters and data fields begin and end unless some convention is agreed on beforehand between the users of the physical link. Clearly, it is desirable to have a well-defined set of rules for communicating over point-to-point links that can be used by a wide range of different terminal users. In general, such a formal set of rules is called a protocol, and so the set of rules for link operation is a data link protocol.


Control Field Cyclic Redundancy Check Secondary Station Error Check Control Frame 


Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.


  1. 1.
    General Information—Binary Synchronous Communications (3rd ed.), Manual No. GA273004–2, IBM, Research Triangle, North Carolina (1970).Google Scholar
  2. 2.
    Basic Data Communications—Line Control Procedure (Vol. 2), Burroughs Corporation, Detroit, Michigan (1976).Google Scholar
  3. 3.
    IBM Synchronous Data Link Control—General Information (3rd ed.), Manual No. GA273093–2, IBM, Research Triangle, North Carolina (1979).Google Scholar
  4. 4.
    R. W. Hamming, Error detecting and correcting codes, Bell Syst. Tech. J. 29 (2), 147–160 (1950).MathSciNetGoogle Scholar

Suggested Readings

  1. D. E. Carlson, Bit-oriented data link control procedures, IEEE Trans. Commun. 28 (4), 455–467 (1980).CrossRefGoogle Scholar
  2. E. R. Berlekamp (ed.), The Development of Coding Theory, IEEE Press, New York (1974).MATHGoogle Scholar
  3. W. W. Peterson and D. T. Brown, Cyclic codes for error detection, Proc. IRE 49 (1), 228–235 (1961).MathSciNetCrossRefGoogle Scholar
  4. A. Goldberger, A designer’s review of data communications, Computer Design 20, 103–112 (1981).Google Scholar

Copyright information

© Plenum Press, New York 1986

Authors and Affiliations

  • William J. Barksdale
    • 1
  1. 1.South TEC AssociatesHuntsvilleUSA

Personalised recommendations