Question: In a VPLMN with Local Breakout (LBO) for Lawful Interception (LI), which network element generates the Charging Control (CC) for voice services?
Option 1: Serving and System Architecture Evolution (SAE) Gateway
Option 2: PDN-GW or IMS-AGW
Option 3: Mobility Management Entity (MME)
Option 4: Proxy-Call Session Control Function (P-CSCF)
Explanation: In the context of Lawful Interception for voice services in a Visited Public Land Mobile Network (VPLMN) with Local Breakout (LBO), the Charging Control (CC) is generated by either the Packet Data Network Gateway (PDN-GW) or the IP Multimedia Subsystem Access Gateway (IMS-AGW), as they manage data sessions and voice calls over IMS, making them the appropriate sources for charging information.