For distributed teams the Internet RTT between a pair of call participants is frequently higher than 300ms, and that's unloaded -- if the connection is marginal then average RTT could be much higher.
Wi-Fi is also a huge contributor to latency. In congested areas or with problematic APs or end stations it's not uncommon to see packets delayed more than 500ms by retransmits. The average might be lower, but with frequent excursions to much higher than average latency.
Wi-Fi is also a huge contributor to latency. In congested areas or with problematic APs or end stations it's not uncommon to see packets delayed more than 500ms by retransmits. The average might be lower, but with frequent excursions to much higher than average latency.