We have to convert these OB Annexes into data (publicly accessible):
13 OB Annex 1154: Status of Radiocommunications between Amateur Stations of different Countries (In accordance with optional provision No. 25.1 of the Radio Regulations) and Form of Call Signs assigned by each Administration to its Amateur and Experimental Stations RR 25.1
12 OB Annex 1002: List of Country or Geographical Area Codes for non standard facilities in telematic services 15/04/2012 T.35
11 OB Annex 1001: List of the national authorities designated to assign ITU-T Recommendation T.35 terminal provider codes 01/04/2012 T.35
10 OB Annex 1000: Service restrictions 15/03/2012
9 OB Annex 991: Call-Back and alternative calling procedures (Res. 21 Rev. PP-2006) 01/11/2011 Res. 21 PP-2006
8 OB Annex 980: List of telegram destination indicators 15/05/2011 F.32
7 OB Annex 978: List of Telex Destination Codes (TDC) and Telex Network Identification Codes (TNIC) 15/04/2011 F.68 / F.69
6 OB Annex 977: List of Data Network Identification Codes (DNIC) 01/04/2011 X.121
5 OB Annex 976: List of Data Country or Geographical Area Codes 15/03/2011 X.121
4 OB Annex 974: List of Names of Administration Management Domains (ADMD) 15/02/2011 F.400 / X.400
3 OB Annex 955: Various tones used in national networks (According to ITU-T Recommendation E.180) (03/1998) 01/05/2010 E.180
2 OB Annex 669: Five-letter Code Groups for the use of the International Public Telegram Service 01/06/1998 F.1
Specifically, we want to normalize the data provided at T-SP1 and show them on the OB site: https://www.itu.int/en/publications/ITU-T/Pages/publications.aspx?parent=T-SP&view=T-SP1
We have to convert these OB Annexes into data (publicly accessible):
13 OB Annex 1154: Status of Radiocommunications between Amateur Stations of different Countries (In accordance with optional provision No. 25.1 of the Radio Regulations) and Form of Call Signs assigned by each Administration to its Amateur and Experimental Stations RR 25.1
12 OB Annex 1002: List of Country or Geographical Area Codes for non standard facilities in telematic services 15/04/2012 T.35
11 OB Annex 1001: List of the national authorities designated to assign ITU-T Recommendation T.35 terminal provider codes 01/04/2012 T.35
10 OB Annex 1000: Service restrictions 15/03/2012
9 OB Annex 991: Call-Back and alternative calling procedures (Res. 21 Rev. PP-2006) 01/11/2011 Res. 21 PP-2006
8 OB Annex 980: List of telegram destination indicators 15/05/2011 F.32
7 OB Annex 978: List of Telex Destination Codes (TDC) and Telex Network Identification Codes (TNIC) 15/04/2011 F.68 / F.69
6 OB Annex 977: List of Data Network Identification Codes (DNIC) 01/04/2011 X.121
5 OB Annex 976: List of Data Country or Geographical Area Codes 15/03/2011 X.121
4 OB Annex 974: List of Names of Administration Management Domains (ADMD) 15/02/2011 F.400 / X.400
3 OB Annex 955: Various tones used in national networks (According to ITU-T Recommendation E.180) (03/1998) 01/05/2010 E.180
2 OB Annex 669: Five-letter Code Groups for the use of the International Public Telegram Service 01/06/1998 F.1
14 List of ITU Carrier Codes (ICCs) (https://www.itu.int/oth/T0201/en)
15 List of Recognized Operating Agencies (ROAs) (https://www.itu.int/oth/T0204)
16 Bureaufax Table (https://www.itu.int/en/ITU-T/inr/Pages/bureaufax.aspx)
These data are available in the INR database, and ITU-T will provide them (consider that they may be privately accessible only for now):