Telegraph Regulations, 1865-1973
The Telegraph Regulations contained provisions which dealt with the international telegraph network and matters such as charging systems and the routing, transmission and delivery of telegrams.
Telephone Regulations, 1885-1973
The Telephone Regulations contained provisions which dealt with the international telephone network and matters such as methods of charging and international accounting.
Radio Regulations, 1906-present (and Additional Radio Regulations, 1927-1979)
The purpose of the Radio Regulations is to ensure interference-free operations of radiocommunication systems and to provide ITU Member States with equitable access to the radio spectrum. The Additional Radio Regulations, in place from 1927 to 1979, contained supplementary instructions for radiotelegraph and radiotelephone communications.
A note on Radio Regulations publication type:
- Complete Edition: constitutes a full publication of the Radio Regulations
- Appendix: some appendices were published as separate booklets and are intended to be used with specific editions of the Radio Regulations.
- Update pages: update pages were issued between the publication of complete editions of the Radio Regulations and replace some pages in a specific edition.
International Telecommunication Regulations (ITRs), 1988-present
In 1988, the Telegraph and Telephone Regulations were merged into a single set of regulations, the International Telecommunication Regulations (ITRs). The ITRs define the general principles for the provision and operation of international telecommunications today.