Summation check

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In telecommunication, the term summation check (sum check) has the following meanings:

  • A checksum based on the formation of the sum of the digits of a numeral.
    • Note: The sum of the individual digits is usually compared with a previously computed value.
  • A comparison of checksums on the same data on different occasions or on different representations of the data in order to verify data integrity.


  •  This article incorporates public domain material from the General Services Administration document: "Federal Standard 1037C".