Question: What action does the Lawful Interception Management System Function (LMISF) take when receiving an IMS signalling message involving compression from the S-GW/BBIFF?
Option 1: The LMISF bypasses the compressed SIP message to maintain interception efficiency.
Option 2: The LMISF performs decompression of the SIP message before processing, as per defined protocols.
Option 3: The LMISF requests the S-GW/BBIFF to resend the uncompressed IMS signalling message.
Option 4: The LMISF stores the compressed message without examination for potential later analysis.
Explanation: This is correct because, according to telecom interception protocols, maintaining the integrity and usability of intercepted data is crucial. Decompressing the SIP message allows the LMISF to effectively examine and process the message, ensuring that any necessary interceptions can be accurately facilitated for inbound roaming users, aligning with lawful interception requirements in telecommunications.