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Is your network ready for a VoIP call? Live latency, jitter, loss & call-quality score with a traffic-light icon and alerts. Know your network is call-ready, at a glance. NQM lives in your toolbar and quietly checks your connection every 30 seconds — measuring the three things that actually make or break a VoIP or video call: 🚦 TRAFFIC-LIGHT ICON — green: good for calls · amber: usable, with hiccups · red: rough (robot-voice territory) · grey: offline. Signal bars make the state readable without colour, and an optional badge shows live latency in ms. 📈 THE METRICS THAT MATTER — latency (median round trip), jitter (the call-killer) and packet loss, measured with tiny HTTPS micro-bursts to Google and Cloudflare edge endpoints — including Google DNS at 8.8.8.8. ⭐ REAL CALL-QUALITY SCORE — an ITU-T G.107 E-model MOS estimate turns the raw numbers into a single 1–4.5★ "can I call?" verdict. 🔔 SMART ALERTS — a notification when quality drops, and another when it recovers. Hysteresis and cooldowns mean one blip never spams you. 📊 REALTIME DASHBOARD — open the popup and it streams once per second: emoji status face, metric chips and a live latency sparkline that labels its own timescale. Click the chart for the longer trend (30 min / 1 h / 6 h / 24 h) with median, jitter, worst-loss and "% time good" stats. 🔒 PRIVATE BY DESIGN — no accounts, no analytics, no servers of ours. Probes are empty requests; about 24 h of history stays in your browser. Why no bandwidth test? A voice call needs ~100 kbps — any line that passes the latency check has the throughput. Constant speed tests would saturate your connection and corrupt the numbers that matter.