The Regulatory Agency for Electronic Communications and Postal Services is a member of the International Telecommunication Union – ITU, the European Conference of Postal and Telecommunications Administrations – CEPT, the European Telecommunications Standards Institute – ETSI and the Independent Regulators Group – IRG, with an observer's status in the Body of European Regulators for Electronic Communications – BEREC.
As part of the ITU activities, RATEL's representatives participate in the work of the group for numbering standardization (ITU-T SG2), transport networks group (ITU-T SG15) and the group for Internet of Things and its application (ITU-T SG 20).
Regarding the cooperation with CEPT, RATEL takes part in the activities of the Electronic Communications Committee – ECC, working group for spectrum monitoring (WGFM 22), working group for RF spectrum management technical guidelines (WG SE) and RF spectrum engineering project team (SE24).
As of 2012, RATEL is a member of the Independent Regulators Group (IRG), while in BEREC it has an observer's status, with its representatives attending the Board of Regulators – BoR and Contact Network – CN meetings. Since 2013, RATEL has actively participated in the activities of expert BEREC WGs. During 2018, director of RATEL acted as a Vice Chair of BEREC and IRG, representing non-EU countries, and also as a member of the BEREC Mini-Board.
In addition, RATEL takes part in the work of the expert Radio Spectrum Policy Group - RSPG, which is assisting the European Commission in the matters of RF management policy development. The Republic of Serbia has an observer's status in this body, but equally an opportunity to take a closer look into the strategy of RF spectrum use, both in short and long term.
RATEL is a member of REDCA (Radio Equipment Directive Compliance Association), an association gathering designated bodies, organizations assessing radio equipment conformity, consulting companies, manufacturers and administrations in the EEA and countries with signed mutual recognition agreement (MRA) with the EU. The significance of REDCA membership implies access to important informations on radio equipment and exchange of experiences in the implementation of the Directive on radio equipment 2014/53/EC.
As a measure to strengthen cooperation with the NRAs from other countries, RATEL concluded numerous memorandums of understanding in the area of electronic communications, providing for regular exchange of information on policy and strategy development in the field of electronic communications, expert meetings for the purpose of examining and comparing technical, legal, economic and other aspects of regulatory activities in the said area. Special attention has been laid on cooperation with regulatory bodies from the neighbouring countries, encouraging the exchange of experiences and opinions on important questions pertaining to electronic communications market regulation and development, namely through the activities of the regional Cooperation forum of electronic communications regulators of Bosnia and Herzegovina, Montenegro, North Macedonia and Serbia.
RATEL's representatives take part in the UPU working groups dealing with postal regulation, as well as in the activities of CERP WGs, with an observer's status in ERGP.
The Agency collaborates with all relevant international organizations in the field of postal regulation and particularily with postal regulators of the countries in the region.
The National CERT has been accredited on the international „Trusted Introducer“ CERT team list intended for support to the alert centers in case of compromised information systems security. Thanks to this membership, RATEL, i.e. National CERT, has been able to monitor, collect and exchange timely and reliable data on cyber security incidents and risks. RATEL's active participation in the international meetings and workshops contributes to the international community's efforts to improve the overall protection against security risks in ICT systems.
RATEL also cooperates with the European Union Agency for Cybersecurity (ENISA), within an expert group of electronic communications regulators dealing with network and service intergrity and security, whose activities are defined under Article 13a of the Directive 2009/140/EU of the European Parliament and of the Council.
Owing to the First Fellowship program, the National CERT of the Republic of Serbia became a priviledged FIRST (Forum of Incident and Response Security Teams) member in the beginning of 2019, setting off the procedure for full membership in this organization.