What does X.21 stand for?

Page/Link

Page URL:

HTML link: <a href="https://www.acronymattic.com/standard-containing-physical_layer-specification-(X.21).html">X.21</a>

Citations

• MLA style: "X.21." Acronym Attic. 2019. AcronymAttic.com 23 Feb. 2019 https://www.acronymattic.com/standard-containing-physical_layer-specification-(X.21).html
• Chicago style: Acronym Attic. S.v. "X.21." Retrieved February 23 2019 from https://www.acronymattic.com/standard-containing-physical_layer-specification-(X.21).html
• APA style: X.21. (n.d.) Acronym Attic. (2019). Retrieved February 23 2019 from https://www.acronymattic.com/standard-containing-physical_layer-specification-(X.21).html