3CX: why this phone system is winning in SMBs
Licensing by simultaneous calls, mobile apps, CRM integration, flexible hosting: what makes 3CX our clients' most frequent choice, and where its limits are.
18 September 2026 · 2 min read · ALLSAFE SOLUTIONS
As a 3CX partner, we deploy this phone system at ten-person firms as well as groups with several hundred extensions. Here, plainly, is what explains its success and the cases where we recommend something else.
A licence that does not punish growth
Most phone systems are paid per user. 3CX is licensed by number of simultaneous calls. A 60-person company that never has more than 16 calls at once pays a 16 SC licence, however many extensions are created. For large teams with modest call volumes, the difference over three years is considerable.
The extension follows the person
iOS, Android, Windows, Mac and browser apps give every employee their business number on every device. A salesperson answers from the car, a technician from the client site, an assistant from home, all with the same number and the same call queues.
Business integration out of the box
3CX connects natively to Microsoft 365, Odoo, HubSpot, Zoho and most CRMs. The customer’s record opens when they call, every call is logged, and one click on a number in the CRM places the call. These are the details that save minutes every day.
Hosted or on premises, your choice
3CX can be hosted by us, in your cloud, or on a small machine in your server room. We recommend hosting for almost all SMBs: no machine to maintain, high availability, managed updates.
What you should know
- The network makes the quality. Voice VLAN, QoS on the firewall and, for multi-site companies, an SD-WAN that pins voice to a stable link. Without that, no IP phone system will keep its promises.
- The SIP trunk matters as much as the PBX. A reliable carrier and a 4G backup gateway make the difference the day the fibre is cut.
- Very specific needs (call centres with complex scripting, several hundred agents) may justify other platforms. We say so when that is the case.
Our approach
Audit of your call flows, licence sizing, handset selection, number porting, training and support included. A complete 3CX project for an SMB deploys in two to four weeks. Details on our IP telephony page.
Let’s talk about your project.
Free initial audit, reply within one business day.