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ITU-T A.12 (10/2000) عربي | 中文 | English | Español | Français | Русский Identification and layout of ITU-T Recommendations This Recommendation provides information on the means on assigning the letter series designations for ITU-T Recommendations. Approval date: 2000-10-06 Provisional name: A.res4 Approval process: WTSA Status: Superseded Maintenance responsibility: TSAG Further detail(s): Patent statement(s) EditionsRelated supplement(s) Ed. ITU-T Recommendation Status Summary Table of Contents Download 3 A.12 (10/2008) In force - here here 2 A.12 (10/2004) Superseded here here here 1 A.12 (10/2000) Superseded here here here ITU-T Supplement Title Status Summary Table of contents Download A Suppl. 2 (06/2000) Guidelines on interoperability experiments In force here here here A Suppl. 3 (07/2012) IETF and ITU-T collaboration guidelines In force here here here A Suppl. 1 (09/1998) Guidelines on quality aspects of protocol related Recommendations Superseded here here here A Suppl. 3 (11/2001) IETF and ITU-T collaboration guidelines Superseded here here here