RF inactivity sleep is usually caused by Extended Discontinuous Reception (eDRX). RF inactivity ranges typically from seconds to minutes. When an RF inactivity sleep ends, the modem continues to monitor the serving cell and can be reached by the network.
Synchronizing uplink data with RF inactivity sleep does not offer any power savings. The application can save power by deactivating hardware components during RF inactivity sleep and allocating resources used by the modem for other purposes.
The following notification example indicates the activation of RF inactivity sleep with a 20000 ms period:
%XMODEMSLEEP: 2,20000The following notification example is a prewarning of the end of the RF inactivity sleep 1500 ms before the sleep ends:
%XMODEMSLEEP: 2,1500%XMODEMSLEEP: 2,0