Retranslation is used in Wialon Hosting to transmit data (messages from units) to other servers or systems in real time. It is possible to retransmit data to several servers simultaneously and at different protocols. The ID of a retranslated unit can be different from its ID in Wialon.
At this page you can find the list of protocols and retranslators, which can be used in Wialon system.