04.143GPPIndividual equipment type requirements and interworkingSpecial conformance testing functionsTS
Activating EMMI requires the presence of a test SIM. EMMI shall be activated by any of the following:
– switching on the MS;
– inserting a test SIM;
– layer 3 message on the radio interface (ACT_EMMI_CMD).
When the MS is ready to receive frames, it shall send one XON message.
EMMI shall be deactivated by any of the following:
– switching off the MS;
– removing the test SIM;
– layer 3 message on the radio interface (DEACT_EMMI).
NOTE: No XOF shall be sent after deactivation.
The L3 message used on the radio interface to activate the EMMI is the activation command ACT_EMMI_CMD (see subclause 8.4). This message has to be acknowledged by the message ACT_EMMI_ACK on the radio interface sent by the MS (see subclause 8.5).
For deactivation of the EMMI in the MS through the radio interface, the message DEACT_EMMI is defined in subclause 8.6. An acknowledgement of this message is not required.