Question: In E-UTRAN and Satellite E-UTRAN, what information does the Extended Rejection Cause Code object contain in case of an EMM ATTACH REJECT or EMM TRACKING AREA UPDATE REJECT message, if available?
Option 1: The USIM Application Toolkit version
Option 2: The UE's (User Equipment) current location area
Option 3: A generic error code indicating network congestion
Option 4: The Extended EMM Cause as received in the reject message, coded according to standard specifications for EPS implementations
Explanation: In E-UTRAN and Satellite E-UTRAN scenarios, when an EMM ATTACH REJECT or EMM TRACKING AREA UPDATE REJECT message is sent and the Extended EMM Cause is available, the Extended Rejection Cause Code object contains this detailed cause information for diagnosing issues at a more granular level than generic error codes.