What is standby mode for WAN links in BBNA?

Each enabled WAN/Cellular port can be put in “Standby” mode if desired. In the Standby mode, a WAN port will not be normally used unless no other WAN connectivity is available.  This mode would be used if it is desired to use the WAN/Cellular resource only as a backup in case of failure of the primary WAN connection(s). In order to put a WAN/Cellular port in Standby mode, select the displayed check box.