ITU Operational Bulletin
Messages complement to ITU-T Recommendation
ITU-T Recommendation Q.3919
Q.3919
Last approved: 31.XII.2025
Referenced in 1 issue of the Bulletin.
2026
1 amendmentDate / Message
Messages complement to ITU-T Recommendation
Last approved: 31.XII.2025
Referenced in 1 issue of the Bulletin.