ITU-T M.580-1989
Setting up and Lining up an International Circuit for Public Telephony - - General Maintenance Principles - Maintenance of International Transmission Systems and Telephone Circuits (Study Group IV) 15 pp

Standard No.

ITU-T M.580-1989

Release Date

1989

Published By

International Telecommunication Union (ITU)

Status

Withdraw

Latest

ITU-T M.580-1989

Scope

This Recommendation applies to all circuits operated on a manual, semi-automatic or fully automatic basis, whether provided solely by analogue transmission and switching systems or by a mixture of analogue and digital systems.

ITU-T M.580-1989 history

• 1989 ITU-T M.580-1989 Setting up and Lining up an International Circuit for Public Telephony - - General Maintenance Principles - Maintenance of International Transmission Systems and Telephone Circuits (Study Group IV) 15 pp