ITU-T E.230-1989
Charging (Determination of Collection Charges) in the International Telephone Service - Telephone Network and ISDN - Operation@ Numbering@ Routing and Mobile Service (Study Group II) 1 pp

Standard No.

ITU-T E.230-1989

Release Date

1989

Published By

ITU-T - International Telecommunication Union/ITU Telcommunication Sector