Understanding EMPRESS: The Standard for Push-to-Talk Communication Over Cellular and Satellite Networks

EMPRESS (Enhanced Mobile Push-to-Talk over Cellular and Satellite) is a standard for push-to-talk (PTT) communication over cellular and satellite networks. It was developed by the European Telecommunications Standards Institute (ETSI) to provide a common framework for PTT services across different network technologies and devices.

EMPRESS supports both circuit-switched and packet-switched networks, and it provides a range of features such as group calling, call holding, and priority access. It also supports both voice and data messaging, and it can be used in a variety of applications, including public safety, transportation, and industrial communications.

One of the key benefits of EMPRESS is its ability to provide seamless roaming between different network technologies, such as from cellular to satellite or vice versa. This allows users to maintain their PTT connections even when they move out of range of one network and into range of another.

Overall, EMPRESS is an important standard for push-to-talk communication over cellular and satellite networks, and it provides a flexible and reliable platform for a wide range of applications.