3CX Licences are priced as an annual licence/subscription which is based on the number of simultaneous calls required. As a rule of thumb, 1 sim. call per 3-4 extensions is sufficient, i.e. a company with 50 extensions would need a 16 sim. call licence. You can upgrade your subscription at any point in time by just paying the difference for the remaining period.
Standard 3CX Licence
The 3CX standard licence gives you a free licence for up to 4 simultaneous calls, but doesn’t provide some of the more advanced features.
Professional 3CX Licence
If you need advanced call reports and call center features for queue agents, a professional licence is the best option for your business.
Enterprise 3CX Licence
If you need additional resilience and phone branding, on top of the professional licence features then it’s best to choose an enterprise licence.