7.4 Call Handling for an MSP subscriber

23.0973GPPMultiple Subscriber Profile (MSP) Phase 2Release 17Stage 2TS

The procedure for handling MSP calls can be divided into two areas: mobile originating call handling and mobile terminating call handling.

7.4.1 Mobile Originating (MO) call handling

The served subscriber may use the registered profile or explicitly select a provisioned profile to set up an MO call. If the profile is explicitly selected, the selection information will be included in the called party BCD number and transported to the gsmSCF. If the gsmSCF recognises that a profile has not been explicitly selected (there is no profile selection information in the called party BCD number) then the registered profile is used. The MMI for explicitly selecting a profile is defined in 3G TS 22.030.

The information flow for an MO call is shown in figure 28.

When the gsmSCF receives an Initial_DP message containing MO call parameters from the gsmSSF, the process MO_MSP_Call_gsmSCF will be invoked, see figure 5. All other call handling is described in 3G TS 23.018 and 3G TS 23.078.

7.4.2 Mobile Terminating (MT) call handling

The profile used for an MT call to the served subscriber is determined by the called MSISDN.

The information flow for an MT call is shown in figure 29.

When the gsmSCF receives an Initial_DP message containing MT call parameters from the gsmSSF, the process MT_MSP_Call_gsmSCF will be invoked, see figure 8. All other call handling is described in 3G TS 23.018 and 3G TS 23.078.