Question: In a Voice Group Call Service (VGCS) utilizing A-interface link sharing, where is the conference bridge required for connecting transmission paths of nominated cells typically located?
Option 1: Within each Base Station Controller (BSC) serving nominated cells
Option 2: At the edge of the network, closest to User Equipment (UE)
Option 3: Within the Group Call Anchor Mobile Switching Center (MSC)
Option 4: Externally as a standalone entity, separate from MSC and BSC
Explanation: In the context of VGCS with A-interface link sharing, efficient management of group calls necessitates centralized control. Locating the conference bridge within the Group Call Anchor MSC enables streamlined setup and management of single A-interface links to each BSC and nominated cells, ensuring coordinated distribution of speech and signaling. This central location optimizes resource utilization and simplifies the complexity of managing multiple group call transmission paths.