General

The present document defines classes of environmental conditions and their severities to which telecommunication 
equipment may be exposed. The severities specified are those which will have a low probability of being exceeded; 
generally less than 1 % of the operating time in a year. 
The present document applies to equipment mounted for stationary use including periods of erection work, down time, 
maintenance and repair at weatherprotected locations defined in clause 5. 

The purpose of the present document is to define a class of environmental conditions and their severities to which 
equipment may be exposed. Only severe conditions, which may be harmful to the equipment, are included. The 
severities specified are those which will have a low probability of being exceeded; generally less than 1 % of the 
operating time in a year. 
The present document applies to equipment mounted for stationary use including periods of erection work, down time, 
maintenance and repair at non-weatherprotected locations defined in clause 5.

The present document specifies accessibility and interoperability characteristics for the following types of products and 
services when used in emergency communications. They form together a chain of items involved in accessible 
emergency communications: 
• Communication terminals used in electronic communications 
• Electronic communication services 
• Emergency communications systems including PSAPs 
• Assisting services used in electronic communication services (relay services, language translation services, 
expert services) 
The present document addresses technical aspects of interoperability between user equipment, originating services and 
emergency communications systems, and the interoperability and functionality required to be able to route emergency 
communications to the most appropriate PSAP and include assisting services when required. It specifies interoperable 
and accessible emergency communications, which incorporates voice, video, and real-time text. 
Focus is on SIP and IMS technologies for user equipment and originating services, and SIP technology for the 
emergency communications systems. Brief information is provided on how to arrange emergency communications 
access also for other technologies. 
General accessibility requirements on emergency communications as well as everyday communications including 
media performance aspects, functional details of the accessible media and general user interface requirements for 
accessibility are specified in EN 301 549 [1]. 
NOTE: The relationship between the present document and essential requirements of 
Directive (EU) 2019/882 [i.3], Annex I and Annex V is given in Annex AA and Annex AB. 

The present document establishes a broadcasting standard for the Digital Audio Broadcasting (DAB) system designed 
for delivery of high-quality digital audio and video programmes and data services for mobile, portable and fixed 
reception from terrestrial transmitters in the Very High Frequency (VHF) frequency bands as well as for distribution 
through cable networks. The DAB system is designed to provide spectrum and power efficient techniques in terrestrial 
transmitter network planning, known as the Single Frequency Network (SFN) and the gap-filling technique. The DAB 
system meets the required sharing criteria with other radiocommunication services. 
The present document defines the DAB transmission signal. It includes the coding algorithms for multiplexing of audio 
and video programmes and data services, channel coding and modulation. Provision is also made for transmission of 
additional data services which may be programme related or not, within the limit of the total system capacity. The 
present document provides information on the system configuration which includes information about the ensembles, 
services, service components and linking of them. 
The present document describes the nominal characteristics of the emitted DAB signal. The aspects related to the 
receiver design are outside the scope of the present document. 

The present document specifies technical characteristics and methods of measurements for wireless microphones, 
similar RF audio link equipment, cordless audio (including low power Band II transmitters), in-ear monitoring, cochlear 
implant and assistive listening devices, intended for the transmission of music and speech including the associated 
ancillary equipment in respect of electromagnetic compatibility, as detailed in table 1. 
Technical specifications related to the antenna port and emissions from the enclosure port of the radio equipment are 
out of scope of the present document. Such technical specifications are found in the relevant product standards for the 
effective use of the radio spectrum, see table 1. 
The present document specifies the applicable test conditions, performance assessment and performance criteria for 
wireless microphones, similar RF audio link equipment, cordless audio, in-ear monitoring, ALD and Cochlear Implants 
and associated ancillary equipment. This equipment can use analogue or digital modulation techniques. 
Low quality speech applications as toy microphones, baby phones etc. operating at frequencies below 50 MHz, 
occupied bandwidth < 25 kHz and operating according to CEPT/ERC/REC 70-03 [i.2], Annex 1 are out of scope of the 
present document. 

For cochlear implants more stringent EMC standards exist and Annex E provides information on its relationship to the 
present document. 
NOTE 1: Technical specifications related to conducted emission EMC requirements below 9 kHz on the AC mains 
port of radio equipment are out of scope of the present document. Such technical specifications are 
normally found in the relevant product family standards for AC mains powered equipment (e.g. 
EN 61000-3-2 [i.6] and EN 61000-3-3 [i.7]). 
NOTE 2: The relationship between the present document and essential requirements of article 3.1(b) of 
Directive 2014/53/EU [i.1] is given in Annex A.

The present document provides a framework for standardized catalogue metadata in data spaces, in support of the 
publication and discovery of data products and to assure findability of data products within and across data spaces. 
The present document: 
a) sets out the common catalogue metadata, the minimum set to be applied across all common European data 
spaces; 
b) establishes rules on the setting out of catalogue metadata extensions, specific to a domain-specific data space 
or to a specific data spaces set.