Which of the following is NOT a property of voice traffic?

Voice traffic is characterized by several key properties, one of which is that its required bandwidth typically falls within a specific range. For standard voice over IP (VoIP) calls, the bandwidth requirement is generally between 30 and 128 kbps. This range accounts for compressed voice streams using various codec types, such as G.711 or G.729.

The assertion that the required bandwidth is over 200 kbps exceeds the typical requirements for voice traffic, making it inconsistent with standard practices for voice communication. In fact, this higher bandwidth requirement is more aligned with uncompressed audio or video streams rather than VoIP.

Latency for voice traffic should ideally be below 150 ms to ensure good call quality. Latency affects the responsiveness of conversation, so maintaining low latency is crucial for effective voice communication. The characteristic of voice traffic being smooth pertains to the fact that voice packets need to be transmitted consistently and without abrupt changes in delay or jitter to maintain clarity in conversation.

Thus, the correct answer accurately identifies an incorrect property of voice traffic by highlighting the usual bandwidth requirements associated with it.