Moving a client from 3CX to Yeastar is one of the most common migration conversations X2 handles with reseller partners. The commercial case is usually straightforward — 3CX’s pricing restructures have made the economics less favourable, and Yeastar P-Series provides strong feature parity at a more predictable cost. The questions that slow resellers down are practical ones: how long does it take, what happens to the client’s numbers, and do you need to understand PBX engineering to manage the process?
How Long Does a 3CX to Yeastar Migration Take?
For a typical SME client — 10 to 50 users, standard call flows, single site — X2 can provision and fully configure the Yeastar system within 48 to 72 hours of receiving the client’s requirements. The limiting factor in most migrations is the number port, not the system build. Porting from most UK carriers takes 5 to 10 working days. We plan migrations so the Yeastar system is live and tested before the port completes, giving the client a clean cutover with no last-minute configuration pressure.
Do Clients Lose Their Existing Phone Numbers?
No. Number portability is an Ofcom requirement, and all mainstream UK carriers support it. X2 manages the port coordination as part of the migration — we handle the gaining carrier paperwork, communicate port dates, and plan the cutover to minimise the window where calls could be affected. For most clients, the port is experienced as a seamless transition rather than a service disruption.
What Happens to the Client’s Existing Handsets?
Yeastar P-Series supports a wide range of SIP handsets from major manufacturers including Yealink, Fanvil, Snom, and Grandstream. In many cases, handsets already deployed on 3CX can be re-provisioned for Yeastar without replacement — we assess compatibility as part of the pre-migration review. Where handsets need replacing, X2 ships pre-configured devices directly to the client site, arriving plug-and-play ready.
Is There Downtime During the Migration?
We plan migrations specifically to minimise downtime. The standard approach is to build and test the Yeastar system in parallel with the live 3CX environment, then schedule the cutover during a low-traffic period — typically early morning or a confirmed maintenance window. The number port is coordinated to complete in the same window. For most clients, the switchover takes minutes rather than hours.
Do I Need Technical Knowledge to Manage the Migration?
No. X2 handles the technical elements end-to-end: system build, extension and IVR configuration, SIP trunk setup, handset provisioning, and number port coordination. Your role as the reseller is to gather the client’s requirements — call flows, extension list, working hours, any special routing — and manage the client relationship and timeline. We provide a simple requirements template that covers everything we need to get started.
If you have clients on 3CX approaching renewal, speak to the X2 team about migration planning. We can give you an indicative timeline and pricing for your specific client’s setup.