General

The present document provides an overview of the Recommendation ITU-T X.509 | ISO/IEC 9594-8 [i.3] based 
certificate profiles and the statements for EU Qualified Certificates specified in other parts of ETSI EN 319 412 ([i.4] to 
[i.7]). It specifies common data structures that are referenced from other parts of ETSI EN 319 412 ([i.4] to [i.7]). 
The profiles specified in this multi-part deliverable aim to support both Regulation (EU) No 910/2014 [i.9] and the use 
of certificates in a wider international context. Within the European context, it aims to support both EU Qualified 
Certificates and other forms of certificate

The present document defines specific QCStatement for the qcStatements extension as defined in IETF RFC 3739 [2], 
clause 3.2.6, including requirements for their use in EU qualified certificates. Some of these QCStatements can be used 
for other forms of certificate. 
The QCStatements defined in the present document can be used in combination with any certificate profile, either 
defined in ETSI EN 319 412-2 [i.2], ETSI EN 319 412-3 [i.5] and ETSI EN 319 412-4 [i.6], or defined elsewhere. 
The QCStatements defined in clause 4.3 can be applied to regulatory environments outside the EU. Other requirements 
specified in clause 4 are specific to Regulation (EU) No 910/2014 [i.8] but may be adapted for other regulatory 
environments.

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.