ITU-T E.550-1993
Grade-of-Service and New Performance Criteria under Failure Conditions in International Telephone Exchanges - Telephone Network and ISDN - Quality of Service Network Management and Traffic Engineering Study Group II; 12 pp

Standard No.

ITU-T E.550-1993

Release Date

1993

Published By

International Telecommunication Union (ITU)

Latest

ITU-T E.550-1993

Scope

This Recommendation is confined to failures in a single exchange and their impact on calls within thatexchange - network impacts are not covered in these Recommendations.

ITU-T E.550-1993 history

• 1993 ITU-T E.550-1993 Grade-of-Service and New Performance Criteria under Failure Conditions in International Telephone Exchanges - Telephone Network and ISDN - Quality of Service Network Management and Traffic Engineering Study Group II; 12 pp