Question: In a 3GPP-compliant telecommunication system for Lawful Interception (LI), what is the primary guideline for buffering Intercept Related Information (IRI) if transmission fails or cannot be immediately sent over the Handover Interface (HI2)?
Option 1: Buffer IRI indefinitely until successful transmission.
Option 2: Discard IRI if initial transmission over HI2 fails to ensure minimal latency.
Option 3: Apply a standard 5-minute buffer time for all failed IRI transmissions.
Option 4: Buffer IRI for as short a time as possible, with potential retransmission or loss subject to national requirements.
Explanation: This approach balances between ensuring timely delivery and managing failed transmissions efficiently within the constraints of national requirements, aligning with general principles for handling Intercept Related Information (IRI) in telecommunication systems.