How 3CX concurrent-call licensing works — and why it costs less
Most cloud phone systems charge per user, per month: 50 employees means 50 seats, even if 30 of them are part-time. 3CX licenses by concurrent calls instead — you size for peak simultaneous usage. If you typically have 8 calls happening at once, you license for 8 concurrent calls, not 50 seats. For most businesses, that's a meaningful saving over per-user pricing, and RingOffice manages the whole thing.
You don't overpay for part-time users
Pay for calls happening at once, not every headcount.
Add users without upgrading the licence
Only step up when peak concurrent calls actually rise.
Scale down without penalty
If usage drops, the licence can come down too.
Typically cheaper than per-seat UCaaS
Especially for teams with occasional or part-time phone use.
OpenAI
Grok
GooglePer-call vs per-seat: how to size concurrent-call licensing
A concurrent call is one conversation happening at the same time. If you have 50 employees but only 5 are ever on calls at once, you need a licence for 5 concurrent calls, not 50 users. To size it: count the maximum simultaneous calls during your busiest hour and add some growth headroom — and RingOffice does this sizing with you so you don't over- or under-buy.
Small office (5–10 staff)
Usually a few concurrent calls.
Growing SMB (20–50 staff)
Typically a handful to a dozen concurrent calls.
Mid-market (50–150 staff)
Often a couple of dozen concurrent calls.
Larger / multi-site
Sized to peak demand across locations — RingOffice scopes it.
Managed 3CX pricing tiers — the right licence, run for you
3CX offers several editions; RingOffice provides the ones that fit a managed cloud service, sized to your concurrent-call needs.
You never buy, size or manage a licence — RingOffice does
Buying 3CX licensing yourself means sizing concurrent calls, picking a tier, tracking renewals and planning upgrades. RingOffice does all of it: we size the right licence, include it in your managed plan, run it on North American cloud, and handle upgrades with zero downtime as your peak usage changes. And because you're on a managed plan, the AI layer on top runs on the engine you choose — not a single locked-in vendor.
Sizing and tier selection done for you
RingOffice scopes peak concurrent calls and the right tier.
Licensing included in your managed plan
No separate licence to buy, track or renew.
Upgrades handled with zero downtime
Step up (or down) as your usage changes, managed by RingOffice.
What changed in 3CX licensing for 2026
A few changes worth understanding — RingOffice plans around all of them so there are no surprises.
Questions buyers ask about 3CX licensing
What teams ask when sizing and buying a 3CX-based phone system.
Get sized right — and let RingOffice handle the licensing
Tell us your team size and how busy your phones get — RingOffice will size the right 3CX licence, include it in a managed plan, and show you exactly what it costs.
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