ME310G1/ME910G1/ML865G1 AT Commands Reference Guide
80617ST10991A Rev. 11 Page 305 of 1039 2021-09-23
3.3.46. AT#IRATTIMER - Inter RAT Timer Setting
Set command configures the IRAT timer and search alignment timer in dedicated EFS
file
IRAT timer to move to higher
priority RAT for CIoT device in
minutes. If the device camps
on the non-preferred system, it
performs periodic searches for
the priority system in the
foreground.
Foreground PLMN search:
NAS runs a dedicated timer to
search for a more preferable
RAT. Once the timer expires,
NAS reads the dedicated EFS
to establish if the UE is camped
on a less preferred system. If
so, a service request is sent to
search the relevant RAT.
Default value is usually 60, but
it could vary based on single
operator request. You should
check using read command.