NAK (Negative Acknowledgement): Difference between revisions
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[https://www.nena.org/page/E911_PSAP_Eqpt NENA-STA-027, NENA E9-1-1 PSAP Equipment Standards]
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Revision as of 16:43, 3 September 2021
A NAK (Negative Acknowledgement) character indicates that a message, block, or frame has been received in errored condition across a communications circuit, and that it must be retransmitted.
Also known as:
NACK
Relevant NENA Documents
Note: To find and download the document, copy the document number (like NENA-STA-010) from below and search the NENA Standards and Documents page.