Capable of implementing intermittent and low-speed communications, telemetry establishes a connection before communicating, exchanges data blocks in non-real-time (even over slow networks), also offering the ability to communicate with the same device through different media. Telemetry requires a reliable channel of communication, such as a telephone line, GSM or SMS. However, higher speed ADSL or fiber networks, through less reliable in terms of data transmission as such, may also become a possibility in the future. Traditionally based on PSTN or GSM technologies, the world of telemetry is undergoing a major transformation with the arrival of IoT.