Question: What type of information is excluded from being used within Communication Related Intercept Related Information (IRI) on the HI2 interface port, according to 3GPP security standards for Lawful Interception?
Option 1: All non-standard network signalling procedures and location information.
Option 2: Information not part of standard network signalling procedures.
Option 3: Time stamps and cell IDs received over S1 Application Protocol (S1AP).
Option 4: Telecommunication service establishment and control signalling.
Explanation: According to the 3GPP security standards for Lawful Interception, only information that is part of standard network signalling procedures shall be used within communication related IRI on the HI2 interface port. Therefore, any information not meeting this criterion is excluded, making Option 2 the correct answer. This highlights the importance of adhering to standardized protocols in telecom networks for lawful interception purposes.