ITU Operational Bulletin
Messages complement to ITU-T Recommendation
ITU-T Recommendation F.1
F.1
Five-letter code groups for the use of the international public telegram service
Last approved: 1.III.1998
Referenced in 0 issues of the Bulletin.
About this Recommendation
This Recommendation mandates one or more Service Publication registers annexed to the Operational Bulletin. See the linked register(s) for current entries and amendment history.