Phone cutovers have a reputation they don't entirely deserve. Yes, you're moving the most visible piece of office infrastructure, and yes, the failure mode is loud (it's literally silence). But the choreography is well-understood and the windows can be small if you front-load the planning.

We start with what we call a "ghost run" — the new system stands up in parallel with the old one, fully configured, with our team's numbers ported in first. We make and receive real calls through it for a week. Voicemail, ring groups, auto-attendants, the whole tree. The only thing the new system doesn't yet have is the client's numbers.

When that week is clean, we schedule the actual port for a Friday evening. The number range moves at the carrier in a tight window. Internally, we flip the routing in seconds. By Saturday morning, the only person who notices is the bookkeeper, who finds the new voicemail-to-email easier than she expected.

" A migration is a choreography problem first and a technology problem second.

— Your Tech Department, February 2026