ITU I.250:1988
ITU I.250:1988 Definition Of Supplementary Services
Table of Contents
1General2Listofsupplementaryservices
3Associationofsupplementaryservicestobearer
servicesandteleservices
4Definitionsofsupplementaryservices
4.1NumberIdentificationsupplementaryservices
4.2CallOfferingsupplementaryservices
4.3CallCompletionsupplementaryservices
4.4Multipartysupplementaryservices
4.5CommunityofInterestsupplementaryservices
4.6Chargingsupplementaryservices
4.7Additionalinformationtransfersupplementary
service