On the morning of June 3rd, a customer on a live call sat through 1.4 seconds of dead air after she finished a sentence, long enough that she said "hello?" before the agent answered. I had the trace open in Honeycomb forty seconds later. Every span was green. End-to-end p95 read 980ms, comfortably under our budget, and not one span in that waterfall was longer than 400ms. The dashboard told me everything was fine while the customer was, in fact, talking to silence. TL;DR: End-to-end voice l...