scope:

This draft European Telecommunication Standard (ETS) gives a network provider or service provider of an Asynchronous Transfer Mode (ATM) cross connected network a means to:

- get information about the configuration, the faults and the performance of the ATM network;

- control the configuration, the faults and the performance of the ATM network.

Therefore, this ETS:

- identifies the ATM Network Elements (NEs) and the functions within them, which are subject to management. Hereby, use is made of the TCR-TR 014 [5] for descriptions of the ATM transport network architecture and of the ETR 161 [4] for the descriptions of a functional model of an ATM cross-connected network;

- identifies the management services and functions needed to manage these ATM network elements. For this purpose, use is made of CCITT Recommendation M.3020 [16];

- defines the management architecture, to contain the management functions related to the network elements and the Network Management (NM) levels. For the definition of a management architecture use is made of CCITT Recommendation M.3010 [15], the Principles of the Telecommunications Management Network (TMN);

- identifies what management information is available to the TMN by means of layer management OAM flows. This layer management mechanism is defined in ITU-T Recommendation I.610 [14],

- specifies the management information exchanged at the q3 reference point related to the network Element Management (EM) level.

This management information specification is done in a formal way using managed object classes, packages, attributes, notifications, actions and behavior. For this purpose, use is made of the OSI management templates as a notation tool, defined in CCITT Recommendation X.722 [24]. Guidelines for is used, as defined in CCITT Recommendation X.208 [21], Specification of ASN.1. Reuse of the following standards is performed:

- CCITT Recommendation X.720 [22], for use of management information model concepts;

- CCITT Recommendation X.721 [23], for reuse of the OSI Management mechanism;

- ITU-T Recommendation Q.822 [20], performance management, for reuse of the performance data collection mechanisms;

- CCITT Recommendation M.3100 [17], generic network information model, for reuse of generic concepts, like trail, cross-connection, etc.

In this ETS it is assumed that the ATM cross connected network is used as a backbone network for the B-ISDN, so it is related to the Customer Access (CA) and public part of the B-ISDN.