ITU-T E.146-1989
Division of Circuits into Outgoing and Incoming Circuits - Telephone Network and ISDN - Operation@ Numbering@ Routing and Mobile Service (Study Group II; 1 pp; Cancelled)

Standard No.

ITU-T E.146-1989

Release Date

1989

Published By

ITU-T - International Telecommunication Union/ITU Telcommunication Sector