%XSMSFALLBACK set command

The set command enables and disables immediate SMS only fallback in Narrowband Internet of Things (NB-IoT) if CS services are permanently unavailable via combined procedures.

The command configuration is stored to Non-volatile Memory (NVM) approximately every 48 hours and when the modem is set to minimum functionality mode with the +CFUN=0 command.

Active %XPOFWARN warning blocks the storing to NVM.v1.3.x≥2

Syntax:

%XSMSFALLBACK=<fallback_status>

The set command parameter and its defined values are the following:

<fallback_status>: 0 – Fallback is not performed; 1 – Fallback is performed

The following command example sets SMS fallback in NB-IoT:

AT%XSMSFALLBACK=1
OK

Set command