@startuml



state "Reboot modem" as Reboot
Reboot: AT+CFUN=1,1 via SoftReset
Reboot: Init modem, MBN auto-setup IMS APN

state "IMS"  as IMS
IMS: AT+QCFG="ims",1


state "Set PS as preferred" as SetPS
SetPS:Set Packets Switching as preferred method for voice 
SetPS:AT+QNVFR="/nv/item_files/modem/mmode/voice_domain_pref"




SetPS --> IMS
IMS --> Reboot



@enduml