Refer to the exhibit. An employee is reviewing the logs from a Cisco TelePresence System unit due to reports of calls being dropped. Which log entry explains the reason for the call failure?

Question

Exhibit

Options

• AINFO Packet loss detected: 100% loss - no media stream received in the last 10 seconds
• BINFO Jitter buffers increased
• CINFO admin CLI login from 10.160.134.15:51151
• DINFO Main Video stream packet loss detected on the center codec

• A
  71% (34)
• B
  10% (5)
• C
  15% (7)
• D
  4% (2)

Explanation

The log entry 'Packet loss detected: 100% loss - no media stream received in the last 10 seconds' directly explains the call drop. 100% packet loss means the endpoint has received absolutely no audio or video media for 10 consecutive seconds, which will cause the system to terminate the call since there is nothing being transmitted. This is the definitive root cause. Entry B (jitter buffers increased) indicates mild network congestion but is an adaptive measure, not a failure. Entry C (admin CLI login) is a routine administrative access event entirely unrelated to call quality. Entry D (main video stream packet loss on the center codec) indicates partial video degradation but not total call failure. Only 100% packet loss with no media received represents a complete loss of the media stream, which is the direct cause of the dropped call.

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