Question: In Lawful Interception (LI) for 3G networks, when separating messaging services from all other services, what is a key requirement for Communication Service Providers (CSPs) upon detecting SMS events?
Option 1: To utilize new, dedicated intercept capabilities exclusively for messaging services.
Option 2: To leverage existing intercept capabilities, isolating delivery to only messaging services as specified by lawful authorization.
Option 3: To block all non-messaging services during the interception of messaging services.
Option 4: To notify the target user of the lawful interception of their messaging services.
Explanation: This is correct because, according to the specifications for Lawful Interception in 3G networks, when separating messaging services, CSPs are required to use existing intercept capabilities but ensure these are isolatable to deliver only messaging services when specified by a lawful authorization. This approach ensures targeted and privacy-compliant interception practices.