In telecommunications, 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.
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- This article incorporates public domain material from Federal Standard 1037C. General Services Administration. Archived from the original on 2022-01-22.