ITU Operational Bulletin
Messages complement to ITU-T Recommendation
ITU-T Recommendation G.709/Y.1331
G.709/Y.1331
Last approved: 31.I.2012
Referenced in 3 issues of the Bulletin.
2020
1 amendmentDate / Message
Messages complement to ITU-T Recommendation
Last approved: 31.I.2012
Referenced in 3 issues of the Bulletin.