ITU-T E.422-1996 Observations on International Outgoing Telephone Calls for Quality of Service - Telephone Network and ISDN Quality of Service Network Management and Traffic Engineering (Study Group 2) 18 pp
In this Recommendation, the expression “Administration” is used for conciseness to indicate both a telecommunication
administration and a recognized operating agency.
ITU-T E.422-1996 history
1996ITU-T E.422-1996 Observations on International Outgoing Telephone Calls for Quality of Service - Telephone Network and ISDN Quality of Service Network Management and Traffic Engineering (Study Group 2) 18 pp