The summary.
THE MEASUREMENT THAT MATTERS FOR CALLS AND VIDEO
Consistency, not speed. Jitter and packet loss degrade a call on a fast connection.
Your voice leaves via upload. A saturated upload degrades calls while downloads appear fine.
THE MOST COMMON UNSUSPECTED CAUSE OF POOR MEETINGS
A backup or synchronisation running during working hours.
FOR PAYMENT EQUIPMENT
Wired, segmented, with a tested fallback. A payment system that fails costs sales directly.
Never on guest wireless.
FOR CAMERAS AND CONNECTED EQUIPMENT
Separate network segment, changed credentials, restricted remote access.
Such equipment is rarely updated and should not reach business systems.
Ask before buying how long the manufacturer provides security updates.
FOR CLOUD DEPENDENCE
Test working for an hour with the connection disconnected. That reveals what you genuinely depend on.
Then arrange a fallback for it.
THE SETTING TO REVIEW PERIODICALLY
What files are shared, and with whom. Broadly shared and forgotten is extremely common.
