Which Cisco Prime Infrastructure report does an engineer run to troubleshoot client connectivity issues for a VoWiFi network?

Up/Down Statistics track device reachability and availability over time and do not provide the per-stream latency or loss metrics needed for voice quality analysis.

Traffic Stream Metrics reports in Cisco Prime Infrastructure collect per-client, per-stream QoS data including uplink and downlink packet loss, average queuing delay, and roaming statistics for voice traffic admitted via TSPEC. This data directly reflects whether the wireless medium is meeting the QoS thresholds required by active voice streams. It is the primary diagnostic tool for isolating voice quality degradation in a VoWiFi deployment.

Airtime Fairness Statistics report on how transmission time is distributed across clients but do not expose the application-layer QoS metrics relevant to VoWiFi troubleshooting.

802.11 Counters provide low-level PHY and MAC statistics such as retransmissions and CRC errors but do not surface the voice stream-level delay and loss data needed to troubleshoot VoWiFi issues.