Can a business phone system work without desk phones?
Yes. A modern business phone system runs as software on the laptop, mobile or tablet your team already carries, so there's no handset to provision and nothing to replace when someone moves desks.
The desk phone made sense when a phone line was physically wired into one socket in one building. That's what a PBX cabinet exists to manage: extensions tied to sockets, tied to desks. It's also why moving desks, hiring someone new or letting a team work from home used to mean an engineer visit.
Software changes what the number is attached to. Instead of a socket, the number lives with the person. It rings on whatever they're carrying, a new starter is reachable the same morning without anyone plugging in a handset, and someone working from home answers the same line they'd answer at a desk. The call itself doesn't change; where it can reach you does.
That doesn't rule out a physical handset entirely. A reception desk that wants something to pick up can still have one; it's just no longer the only way in. And the move is happening on a deadline whether a business chooses it or not: Openreach is retiring the old analogue and ISDN network, with the current cut-off at the end of January 2027. Read the full detail in the 2027 PSTN switch-off guide.
For the fuller picture of what else changes with a software-based system, see the modern business phone system.
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