Question: What is the primary purpose of implementing Source Controlled Rate (SCR) operation in an Adaptive Multi-Rate speech codec within a telecommunications network?
Option 1: To enhance voice quality by allocating higher bit-rates for all transmissions.
Option 2: To facilitate simultaneous two-way conversations without interruption.
Option 3: To increase the capacity of the network by reducing peak transmission rates.
Option 4: To reduce the average required bit-rate, leading to increased network efficiency and prolonged UE battery life.
Explanation: The correct answer highlights the dual benefits of implementing SCR operation: reducing the average required bit-rate (leading to more efficient transmission with decreased load and hence increased capacity) and prolonging UE battery life (or allowing for a smaller battery for a given operational duration).