ITU-T R.70-1989
Designation of International Telegraph Circuits - Telegraph Transmission Study Group IX; 1 pp

Standard No.

ITU-T R.70-1989

Release Date

1989

Published By

International Telecommunication Union (ITU)

Status

Withdraw

Latest

ITU-T R.70-1989

Scope

that international telegraph circuits should be designated

ITU-T R.70-1989 history

• 1989 ITU-T R.70-1989 Designation of International Telegraph Circuits - Telegraph Transmission Study Group IX; 1 pp