NA 4 - Network Architecture, Operations, Maintenance, Principle & Performance

Broadband Integrated Services Digital Network (B-ISDN); Asynchronous Transfer Mode (ATM); Retainability performance for B-ISDN switched connections

Transmission and Multiplexing (TM); Management of Synchronous Digital Hierarchy (SDH) transmission equipment; Fault management and performance monitoring; Functional description

Network Aspects (NA); Availability performance of path elements of international digital paths

Telecommunications Management Network (TMN); Functional specification of usage metering information management on the Operations System/Network Element (OS/NE) interface

Network Aspects (NA); Functional specification of traffic management on the Network Element/Operations System (NE/OS) interface

Telecommunications Management Network (TMN); Generic managed objects

Telecommunications Management Network (TMN); Generic managed object class library for the network level view

Broadband Integrated Services Digital Network (B-ISDN); Asynchronous Transfer Mode (ATM); ATM layer cell transfer performance for B-ISDN connection types

Broadband Integrated Services Digital Network (B-ISDN); Availability and retainability performance for B-ISDN semi-permanent connections

Network Aspects (NA); Functional specification of Customer Administration (CA) on the Operations System/Network Element (OS/NE) interface

Network Aspects (NA); Functional specification of call routeing information management on the Operations System/Network Element (OS/NE) interface

Network Aspects (NA); Accessibility for 64 kbit/s circuit switched international end-to-end ISDN traffic relations