DMR is a digital radio communication standard first approved by ETSI in 2005 and designed for professional mobile radio users. The system was designed with low cost and simplicity of implementation in mind. It enables voice and data (such as Vehicle and Personnel Tracking Application, Database Query, Operator Console, Fault Tracking Software, etc.) communication. It is preferred in cases where frequency allocation needs to be used efficiently. It is generally preferred in cases where communication is needed in smooth areas.