A.2 Emergency calls only mode

22.0223GPPMobile functionality specificationPersonalisation of Mobile Equipment (ME)Release 17TS

The expression "emergency calls only mode" is used in this TS to describe the state the MS (combined ME and SIM) or US (combined ME and USIM) enters when a personalisation check fails. In this mode, the state of the MS/UE is equivalent to the "limited service state" (see TS 23.122) [4]. Although the personalisation has failed, the ME will be able to access the TMSI and IMSI from the SIM/USIM, and therefore any emergency call request shall use these as the MS/UE identity.

Set up of emergency calls remains as usual dependent on the status of Access Class 10 being broadcast in the cell (see TS 22.011) [2].