and the choice of which parts of ETSs are made members consists of national representatives plus CEN, CENLEC mandatory is done by ACTE. and CEPT. For any specified area a Technical Support Service The process for development of a CTR is shown in Figure 22.8. (TSS) is set up which provides advice to the ECITC and national The European Commission initiates the proposal for a new CTR and members, and is responsible for definition and support of the test this is directed to ETSI by the Senior Officials Group on Telecom- methods, and for co-operating with other standard bodies in this munications (SOGT). The process within ETSI is as in Figure 22.7, area. the ETS finally going to ACTE for approval and conversion to a The national certification co-ordinating member organises certifi- CTR, and then to SOGT for enforcement. cation at the national level and confirms the certificates issued by ANET or CTR contains precise technical information, identifying other participating countries. It also accredits the test laboratories clearly any national differences, caused by historic network dif- and the certifying bodies in its country, and this is supervised by ferences. In addition it contains conformity test methods for all ACTE. It is usually a government or a recognised agency which requirements. represents the government on ECITC. The Test laboratory performs 22/20 Telecommunication standards ADVISORY REQUEST FOR STANDARD COMMITTEE EUROPEAN REQUIREMENT FOR A NEW CTR OF MEMBER COMMISSION STATES (SOGT) Figure 22.8 Process for development of a CTR tests and issues harmonised test reports. These reports are then CEN and CENELEC function separately, except in the area of passed by the equipment manufacturer to the certifying body, who information technology where they combine as the Joint European issues harmonised European certificates for the IT or telecommuni- Standards Institute (JESI). The secretariat for CEN/CENELEC is in cation product. Conforming products are able to carry the CE mark. Brussels and their membership is 