ITU-T I.251. 1 (REV 1)-1992
Direct-Dialling-in (Study Group I) 7 pp

Standard No.

ITU-T I.251. 1 (REV 1)-1992

Release Date

1992

Published By

International Telecommunication Union (ITU)

Status

Withdraw

Latest

ITU-T I.251. 1 (REV 1)-1992

Scope

This supplementary service shail be based on the use of the ISDN number. At least the significant part of the ISDN number shalí be passed to the private ISDN, in order to progress the call to the destination. Direct-Dialling-In @DI) shail apply to publi

ITU-T I.251. 1 (REV 1)-1992 history

• 1992 ITU-T I.251. 1 (REV 1)-1992 Direct-Dialling-in (Study Group I) 7 pp