Modem sleep notifications can be subscribed and unsubscribed with the %XMODEMSLEEP AT command. T3412 notifications can be subscribed and unsubscribed with the %XT3412 command. The prewarning period and threshold for the shortest notified sleep or the timer T3412 period are specified when the notifications are subscribed.
Prewarning period 0 can be used if a prewarning is not wanted. In a long Power Saving Mode (PSM) sleep, the time value in the notifications can exceed the 32-bit integer value.
Syntax for subscribing modem sleep notifications:
%XMODEMSLEEP=1,<warning_time>,<threshold>Syntax for subscribing timer T3412 notifications:
%XT3412=1,<warning_time>,<threshold>Modem sleep notifications and timer T3412 notifications can be subscribed independently of each other.