Tablet video calls for remote building inspections freeze when retry rates soar and PHY rates collapse. What requirement is being violated?
Select an answer to reveal the explanation.
Short Explanation
High retries and crawl-speed rates are like a moving truck stuck in reverse gear—the video meeting is going nowhere useful. Healthy media wants fewer retries and higher working rates. Fix the RF/path problem; do not celebrate the retry counter.
Full Explanation
Tablet video calls for remote building inspections that freeze when retry rates soar and PHY rates collapse violate the requirement to keep client retries low and sustain higher data rates for healthy real-time media. High retries and collapsing rates indicate poor RF conditions or excessive contention, which real-time video cannot tolerate even if the tablet remains associated. Municipal inspection workflows need a healthy PHY path, not merely an SSID join.
Maximizing retries so every video frame is sent dozens of times by design increases airtime waste and worsens freezes. Forcing the lowest mandatory rate on every tablet to stabilize Zoom typically prolongs airtime per frame and harms capacity. Turning off WMM exclusively during video calls increases contention exposure for media queues rather than protecting them.
Exam caveat: correlate freezes with retry counters and negotiated rates before blaming only the collaboration application. Operational check: during a failing inspection call, capture retry percentage and PHY rate on the tablet, improve SNR or reduce utilization at that site, and confirm retries drop and rates rise when video stabilizes. Keep inspection tablets on known-good SSIDs and retest video after each RF change so crews do not carry a bad path into the next remote site visit.