Sheet 1: The procedure Check_User_Error_In_Serving_Network_Entity is specific to Super-Charger; it is specified in
TS 23.116.
Sheet 1: A VLR supporting the MT Roaming Forwarding feature (see
TS 23.018) includes the
"MTRF supported" flag in the MAP Update Location message sent to the HLR. After sending this message, the VLR may receive at any time an MT Provide Roaming Number request including the MTRF Indicator from the old VLR in the WAIT_FOR_DATA state (not represented in the SDL).
The procedure Check_Parameters is specified in
TS 23.018.