ITU-T E.421-1989
Service Quality Observations on a Statistical Basis - Telephone Network and ISDN - Quality of Service, Network Management and Traffic Engineering (Study Group II) 5 pp

Standard No.

ITU-T E.421-1989

Release Date

1989

Published By

International Telecommunication Union (ITU)

Status

Withdraw

Latest

ITU-T E.421-1989

Scope

According to the studies carried out by the CCIT? in 1964-1968, the quantities shown below are considered the minimum quantities to provide a general indication of the quality of service.

ITU-T E.421-1989 history

• 1989 ITU-T E.421-1989 Service Quality Observations on a Statistical Basis - Telephone Network and ISDN - Quality of Service, Network Management and Traffic Engineering (Study Group II) 5 pp