ITU-T R.57-1989
Standard Limits of Transmission Quality for Planning Code-Independent International Point-to-Point Telegraph Communications and Switched Networks Using 50-Baud Start-Stop Equipment - Telegraph Transmission (Study Group IX) 2 pp

Standard No.

ITU-T R.57-1989

Release Date

1989

Published By

International Telecommunication Union (ITU)

Status

Withdraw

Latest

ITU-T R.57-1989

Scope

that Administrations must agree on the composition of the international section and the national sections before setting up an international point-to-point telegraph circuit

ITU-T R.57-1989 history

• 1989 ITU-T R.57-1989 Standard Limits of Transmission Quality for Planning Code-Independent International Point-to-Point Telegraph Communications and Switched Networks Using 50-Baud Start-Stop Equipment - Telegraph Transmission (Study Group IX) 2 pp