Question: What happens to the CC link and Lawful Interception (LI) records when a served user is the target of an Explicit Call Transfer in a telecom network?
Option 1: The original CC link remains active, and an IRI-CONTINUE record is sent.
Option 2: The original CC link is temporarily suspended during the transfer process.
Option 3: The original CC link is terminated, causing an IRI-END record to be sent, and a new CC link (with new IRI records) may be generated for the transferred call.
Option 4: Lawful Interception is automatically disabled for the duration of the call transfer.
Explanation: During an Explicit Call Transfer where the served user is the target, the original call is released, which terminates the existing CC (Call Control) link. This termination triggers the sending of an IRI-END (Interception Related Information - End) record. Following the transfer, network procedures may initiate a new CC link for the transferred call, potentially generating new IRI records, similar to the handling of forwarded calls. This ensures continuity in lawful interception capabilities, if required, post-transfer.