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Measure RTP interarrival jitter and call quality under load. That check cannot demonstrate the current HTTP endpoint and expected application response.

Optical transceiver compatibility and receive-light measurements diagnose the physical signal path before higher-layer work. That check cannot demonstrate the current HTTP endpoint and expected application response.

Compare RTT on the satellite and a terrestrial backup link. That check cannot demonstrate the current HTTP endpoint and expected application response.

VoIP is sensitive to variation in delay even without full link saturation.

Optical transceiver compatibility and receive-light measurements diagnose the physical signal path before higher-layer work. That does not establish the traffic rate exceeds available queue and link capacity.

QoS and capacity planning address congestion rather than bad cables.

Applying suitable queue management and bandwidth shaping at the egress bottleneck would not meet the need for latency-tolerant applications or lower-latency transport where required.

Applying supported QoS queueing and validating buffering for real-time traffic would not meet the need for latency-tolerant applications or lower-latency transport where required.

Configuring mutually compatible duplex and negotiation at both interfaces would not meet the need for latency-tolerant applications or lower-latency transport where required.

Lower loaded RTT validates active queue management. It does not compare RTT on the satellite and a terrestrial backup link.

Optical transceiver compatibility and receive-light measurements diagnose the physical signal path before higher-layer work. It does not compare RTT on the satellite and a terrestrial backup link.

An HTTP 404 after a successful TCP connection indicates an application resource or path mismatch. It does not compare RTT on the satellite and a terrestrial backup link.

Propagation latency cannot be removed by changing Ethernet duplex. That does not establish propagation delay is inherently high on that path.

Microbursts overwhelm small queues even with low interval averages. That does not establish propagation delay is inherently high on that path.

Optical transceiver compatibility and receive-light measurements diagnose the physical signal path before higher-layer work. That does not establish propagation delay is inherently high on that path.

Optimizing AP power, coverage overlap and supported roaming settings would not apply supported QoS queueing and validate buffering for real-time traffic.

Applying suitable queue management and bandwidth shaping at the egress bottleneck would not apply supported QoS queueing and validate buffering for real-time traffic.

Prioritizing latency-sensitive flows and managing capacity or scheduled bulk transfers would not apply supported QoS queueing and validate buffering for real-time traffic.

An HTTP 404 after a successful TCP connection indicates an application resource or path mismatch. It does not measure RTP interarrival jitter and call quality under load.

Walk a controlled path and record handoff timings and BSSIDs. It does not measure RTP interarrival jitter and call quality under load.

Lower loaded RTT validates active queue management. It does not measure RTP interarrival jitter and call quality under load.

The traffic rate exceeds available queue and link capacity. That does not establish variable packet delay disrupts real-time playout.

Client roaming thresholds and RF cell overlaps are poorly tuned. That does not establish variable packet delay disrupts real-time playout.

VoIP is sensitive to variation in delay even without full link saturation. The missing change involves variable packet delay disrupts real-time playout.

Survey spectrum and change channel or move affected clients to suitable 5GHz would not address the need for replan AP channels and steer capable clients to less-contended bands.

Upgrade or rebalance the constrained link after validating demand would not address the need for replan AP channels and steer capable clients to less-contended bands.

Reduce channel widths and replan nonoverlapping cells as needed would not address the need for replan AP channels and steer capable clients to less-contended bands.

Correlate spectrum spikes with retry rates before and after mitigation. It does not compare channel utilization and airtime wait after retuning.

Lower loaded RTT validates active queue management. It does not compare channel utilization and airtime wait after retuning.

Measure building-wide throughput and channel busy time. It does not compare channel utilization and airtime wait after retuning.

Overly wide channels increase contention and limit channel reuse. That does not establish too many devices contend for the same radio channel.

Both link ends disagree on duplex operation. That does not establish too many devices contend for the same radio channel.

The slowest shared link limits end-to-end throughput. That does not establish too many devices contend for the same radio channel.