ITU-T E.277-1989
Conventional Transmission of Information Necessary for the Collection of Charges and the Accounting Regarding Collect and Credit Card Calls - Telephone Network and ISDN - Operation@ Numbering@ Routing and Mobile Service (Study Group II; 1 pp; Same as Recm

Standard No.

ITU-T E.277-1989

Release Date

1989

Published By

ITU-T - International Telecommunication Union/ITU Telcommunication Sector