Which option is effective for reducing call dropout rates in IPO?

Implementing Quality of Service (QoS) measures on the network is effective for reducing call dropout rates in the IPO environment because QoS helps prioritize voice traffic over less critical data traffic. By doing so, it ensures that voice packets are transmitted with minimal delay and reduced jitter, which are essential for maintaining clear and stable voice calls.

In any network, particularly one handling voice over IP (VoIP) calls, congestion can lead to dropped calls if voice packets are not prioritized. QoS settings can reserve a portion of the bandwidth specifically for voice traffic, ensuring that it receives the appropriate level of service even during high traffic periods. This results in fewer interruptions and enhances overall call reliability.

In contrast, reducing the number of active users would likely lead to underutilization of resources rather than addressing the factors causing call dropout rates. Increasing front-end server response times would have the opposite effect, likely leading to more dropped calls due to slower processing and potential congestion. Likewise, using a single communication protocol might simplify management but could limit flexibility and effectiveness in maintaining call quality across diverse network conditions.