Question: Which of the following interfaces enables communication between the MSC Server and the Gateway Mobile Location Centre (GMLC) for Location Services (LCS) coordination?
Option 1: S1 Interface - Used for communication between LTE/EPC networks and non-LTE/SAE networks.
Option 2: Lh Interface - Typically used for roaming and inter-network handovers.
Option 3: Lg Interface - Dedicated for LCS-related communications.
Option 4: Gi Interface - Primarily used for internet access from the mobile network.
Explanation: The correct answer is Option 3, Lg Interface. This interface is specifically mentioned in the context of Location Services (LCS) as the communication link between the MSC Server and the GMLC, facilitating LCS coordination, location requests, and other related services. Understanding the role of specific interfaces in telecom networks highlights their importance in enabling various network functionalities, such as location services, which are crucial for emergency calls, tracking, and other value-added services.