Translations:Modem-stretch/48/en

If the controller is normally connected to the Internet via Ethernet or Wi-Fi, and GPRS is to be used only in case of a main channel failure, this mode of operation is called failover. It usually works like this:

1. Work is organized through the main channel.
2. The availability of Internet access through the main channel is constantly checked.
3. In case of problems, a backup connection is started and the default gateway settings are changed.
4. The main connection is constantly checked, and if the internet access is restored through it, the system returns to work via it, changing the default gateway.