Question: In the context of establishing a bearer towards a forwarded-to subscriber in a mobile network, what additional request does the MSC (Mobile Switching Center) server make to the MGW (Media Gateway) during bearer establishment?
Option 1: To only forward audio streams
Option 2: To both-way through-connect the bearer
Option 3: To split the bearer for simultaneous forwarding
Option 4: To delay the bearer establishment until handover
Explanation: During the establishment of a bearer towards a forwarded-to subscriber, the MSC server specifically requests the MGW to both-way through-connect the bearer. This ensures seamless and bidirectional communication flow for the call, crucial for maintaining call quality and functionality during forwarding scenarios.