ITU E.120:1988
ITU E.120:1988 Instructions For Users Of The International Telephone Service
Table of Contents
Preamble1Generalprinciples
2Instructions
3Publictelephonedirectories
4Publictelephonebooths
5Instructionalinformationforspecificpurposes
6Instructionsbyoperatorsorrecordedannouncements
7Specializedinstructions