scope:

The present document covers the emission, immunity and resistibility requirements for telecommunications equipment where higher performance is required by operators to guarantee enhanced availability of service in specific applications.

The environments considered in the present document are defined in ETSI TR 101 651 [i.5] and are:

• telecommunication centres (classes 1 and 2 of ETSI TR 101 651 [i.5]);

• locations other than telecommunication centres (classes 3 and 4 of ETSI TR 101 651 [i.5]).

Data centres and similar facilities are also considered telecommunication centres, where they are within a dedicated room with servers, storage devices and associated telecommunication equipment.

Considering that all kinds of equipment are not equally important, two equipment categories and associated EMC requirements are introduced and are designated as:

• level 1 (see tables in clauses 9.1.1.1 to 9.1.1.5 and 9.2.1.1 to 9.2.1.5);

• level 2 (see tables in clauses 9.1.2.1 to 9.1.2.5 and 9.2.2.1 to 9.2.2.5);

the latter containing the more demanding requirements.

The appropriate level should be chosen by the operator considering the consequences of failure of the equipment which may lead to impaired function, loss of service, failure to meet contractual obligations or bad publicity and loss of reputation.

The present document is applicable to all equipment types, examples of which are listed below:

• switching equipment which includes trunk and local telephone exchanges, remote switching concentrators, international switches, telex switches and network packet switches, base station controllers, radio network controllers, network servers and gateways;

• non-radio transmission equipment which includes multiplexers, line equipment and repeaters, Synchronous Digital Hierarchy (SDH), Digital Cross Connect (DXC), Asynchronous Transfer Mode (ATM) and network terminations, transmission equipment used in the access network like xDSL;

• power supply equipment which includes central power plant, end of suite power supplies, power management systems and other dedicated telecommunications network power supplies;

• supervisory equipment and dedicated Operation And Maintenance (OAM) equipment;

• tariff and billing equipment;

• data centre equipment which includes: Storage, Processor, Server intended to be used within telecommunication network infrastructure.