European Telecommunications Standards Institute (ETSI)
The European Telecommunications Standards Institute (ETSI) is one of several standards bodies that produce the standards applicable to information and communications technologies. Conforming to telecommunications standards ensures interoperability across different manufacturers’ products.
All equipment, including that which forms part of an assembly of components, should comply with the relevant ETSI or approved specifications and the Radio Equipment Directive (RED) - 2014/53/EU and should be appropriately CE marked.
Several different digital standards are available for conventional two-way radios and it is important to understand that these different technologies are not compatible with each other. The two main standards are Digital Mobile Radio (DMR) and Digital Private Mobile Radio (dPMR). Both are based on open digital radio standards produced by the European Telecommunication Standards Institute (ETSI).
For further information see: ETSI Standards: Digital Mobile Radio
For further information see: ETSI Standards: Private Mobile Radio
A few other digital technologies are used by manufacturers, such as NXDN. NXDN is an open standard common air interface (CAI) technical protocol for mobile communications developed jointly by Icom Incorporated and Kenwood Corporation.
For further information see: NXDN Forum