Question: What happens when a Mobile Equipment (ME) that supports SIM Application Toolkit sends a TERMINAL PROFILE, ENVELOPE, or TERMINAL RESPONSE command to a SIM that does not support SIM Application Toolkit?
Option 1: The SIM processes the command parameters based on the tag value and responds accordingly.
Option 2: The ME automatically switches to an alternative communication protocol to ensure compatibility.
Option 3: The command is ignored, but the ME continues to function normally for other SIM operations.
Option 4: The SIM does not need to support these commands, and the ME will not expect a response related to SIM Application Toolkit functionality.
Explanation: According to specifications, if a SIM or ME does not support SIM Application Toolkit, it is not required to support TERMINAL PROFILE, ENVELOPE, and TERMINAL RESPONSE commands. Thus, when an ME (supporting SIM Application Toolkit) sends one of these commands to a non-supporting SIM, the expectation is that the SIM won't process or respond in the context of SIM Application Toolkit, aligning with the lack of support requirement.