ITU-T R.75-1989
Maintenance Measurements on Code-Independent International Sections of International Telegraph Circuits - Telegraph Transmission Study Group IX; 1 pp

Standard No.

ITU-T R.75-1989

Release Date

1989

Published By

International Telecommunication Union (ITU)

Status

Withdraw

Latest

ITU-T R.75-1989

Scope

that, for the technical supervision of international telegraph circuits, it is necessary to make periodic measurements of distortion on their international sections when they are made up of two or more channels

ITU-T R.75-1989 history

• 1989 ITU-T R.75-1989 Maintenance Measurements on Code-Independent International Sections of International Telegraph Circuits - Telegraph Transmission Study Group IX; 1 pp