3CX Licensing Explained: Users, Editions and Simultaneous Calls

Turn licence sizing into a complete buying decision

Compare current ITC annual 3CX licence prices, then use our cloud-hosted versus on-premise PBX comparison to assign infrastructure and support responsibilities. Before committing, test the required calling journeys with the business phone-system selection guide.

3CX licensing should be sized around the current product edition, required features and call capacity rather than treating every extension as a separately billed telephone line. Product names and entitlements can change, so validate the current 3CX terms before ordering or renewal.

Users and extensions

A user or extension represents a person, room or function configured on the system. The number of configured users helps define administration and usage, but it is not the same as the maximum calls active at one moment.

Simultaneous calls

Simultaneous-call capacity covers calls in progress at the same time, including relevant call legs and system functions under the applicable licence rules. Estimate peak concurrency from call records and future plans rather than employee count alone.

Editions and features

3CX currently describes Basic, PRO and AI editions, with different features and licensing arrangements. Do not select an edition by name alone. Map required queues, reporting, integrations, contact-centre or AI functions against the current official comparison and 3CX licensing options.

Capacity planning

• Review peak inbound and outbound concurrency.
• Include conferences, queues and call flows.
• Allow for known recruitment and campaigns.
• Check whether the SIP service also has a channel limit.
• Monitor busy-hour usage after deployment.

Renewal and ownership

Record the licence owner, renewal date, edition, capacity and partner responsibilities. Confirm what happens if renewal is missed and who can access the customer portal. Keep the licence aligned with the deployed version and support plan.

Hosted costs are broader

The software licence is only part of a managed deployment. Hosting, SIP connectivity, numbers, support, hardware and migration can also affect total cost. If you want those responsibilities managed together, review our Hosted 3CX service and compare monthly packages, user limits and included services.

Ask I.T Communications to review your current call usage and required features before choosing or renewing a licence.

Example sizing exercise

A business with many extensions may have only a modest busy-hour call peak, while a smaller sales team running outbound campaigns can require greater concurrency. Review call records by fifteen-minute interval, then consider queues, conferences and future campaigns before selecting capacity.

Revisit the figures after deployment and before renewal. If busy events approach the selected limit, investigate whether the cause is normal growth, unusual routing or a configuration that creates additional call legs before purchasing an upgrade.