> 3.7 | Summary of State Transitions (Except SLEEP Mode)

> The following table shows how to proceed from one mode to another (grey column = present mode, white columns = intended modes).

> Table 13: | State transitions of TC65 (except SLEEP mode)

> Intended mode --> | POWER DOWN | Normal mode1 | Charge-only mode2 | Airplane mode
> Present mode
> POWER DOWN mode | --- | If AT^SCFG=MeOpMode/Airplane/OnStart,off: IGT >400 ms at low level, then release IGT | Connect charger to VCHARGE | If AT^SCFG=MeOpMode/Airplane/OnStart,on: IGT >400 ms at low level, then release IGT. Regardless of AT^SCFG configuration: scheduled wake-up set with AT+CALA.
> Normal mode | AT^SMSO | --- | AT^SMSO if charger is connected | AT^SCFG=MeOpMode/Airplane,on. If AT^SCFG=MeOpMode/Airplane/OnStart,on: IGT >2s at low level, then release IGT
> Charge-only mode | Disconnect charger | Hardware driven: If AT^SCFG=MeOpMode/Airplane/OnStart,off: IGT >2s at low level, then release IGT AT command driven: AT^SCFG= MeOpMode/Airplane,off | --- | AT^SCFG=MeOpMode/Airplane,on. If AT^SCFG=MeOpMode/Airplane/OnStart,on: IGT >2s at low level, then release IGT
> Airplane mode | AT^SMSO | AT^SCFG=MeOpMode/Airplane,off | AT^SMSO if charger is connected | ---

> 1
> Normal mode covers TALK, DATA, GPRS, IDLE and SLEEP modes
> 2
> See Section 3.5.7 for details on the charging mode