Question: What are the two primary purposes of implementing Discontinuous Transmission (DTX) in a GSM system, as related to the Mobile Station (MS) and the air interface?
Option 1: To save power in the Mobile Station (MS) and to reduce the overall interference level over the air interface.
Option 2: To increase voice quality in the downlink and to enhance uplink transmission capacity.
Option 3: To facilitate handover between different base stations and to support multiparty calls.
Option 4: To prioritize data transmissions over voice calls and to reduce billing for idle time.
Explanation: DTX is specifically designed to take advantage of the pauses in speech to shut down the transmitter, thereby achieving two key benefits: conserving power in the Mobile Station (MS), which extends battery life, and reducing the overall interference on the air interface, which can improve the quality of service for all users on the network.