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Mitel alternative

Mitel alternative for UK SMEs: migrate off MiVoice on your own terms.

Book a free audit How the switch works

Three deadlines pushing you at once.

MiVoice is capable, mature kit. It has served UK offices well for years. The reason you are reading this is timing, not a fault in the engineering. Three separate clocks are running against on-premise MiVoice.

Put the three together and the conclusion is simple. You are moving off on-premise MiVoice in the next couple of years whatever you decide. The only real question is what you move to.

When to stay on Mitel.

Mitel's cloud answer is now Zoom-powered.

Mitel's cloud story has moved around. In 2021 it signed an exclusive partnership with RingCentral. That relationship had unwound by 2024, when Mitel sold its remaining cloud customers to RingCentral and named Zoom as its new exclusive UCaaS partner in September 2024.

So if you take Mitel's cloud route today, you are buying Zoom-powered, per-seat SaaS through Mitel. That can work. It also means your calling platform has changed underlying partner twice in a few years, and you pay a per-seat licence for every user every month.

Managed 3CX is a different shape. The 3CX licence is per system, sized by simultaneous calls, so you are not paying a per-seat SaaS tax on headcount. We bill per user per month for the managed service around it, we host it in the UK, and you deal directly with a named UK contact. No partner reshuffle sitting underneath your dial tone. If a stable platform and a direct relationship matter after the last few years, that is the case for 3CX.

Switching mechanics.

  1. Week 1, audit. We look at your MiVoice platform (MiVoice Business, Office 250, or Connect/ShoreTel), how it connects to the outside world, your handset estate, your dialplan, and your call flows. We price the telephony from that audit, not from a fixed per-seat rate.
  2. Week 2 to 4, 3CX provisioning. UK hosting stood up, Gamma SIP trunks ordered, and your MiVoice dialplan and IVR logic rebuilt in 3CX. Auto-attendants, hunt groups, and out-of-hours routing get carried across rather than reinvented.
  3. Week 4 to 6, number porting. Your numbers port to Gamma via LoA on the standard timeline. Where MiVoice sits on ISDN or analogue lines, this is also your PSTN switch-off migration done in one move.
  4. Week 6 to 7, cut-over. Handsets provisioned, a short training session for staff, and the switch flipped in a planned window. Mitel desk phones that cannot re-register cleanly are replaced with Yealink at this point.
  5. Contract position. We put you on a 12-month term that then continues monthly. No multi-year lock-in and no per-seat SaaS escalator on top.

What about your MiVoice handsets?

Mitel desk phones use Mitel-specific provisioning and firmware, so they do not re-register against 3CX cleanly. The practical approach is to replace them with Yealink handsets at cut-over. The Yealink UI is close enough to a standard desk phone that training is a short session, not a project.

We plan the handset swap in the audit so there are no surprises on the invoice. Because we price the whole thing from your actual estate rather than a blanket per-seat figure, you see exactly what the hardware and the managed service cost, itemised.

Common questions from Mitel leavers.

No. Mitel filed for Chapter 11 in March 2025 and exited through a pre-packaged restructuring in April 2025. The company is still operating and still supporting customers. The reason to plan ahead is the combination of MiVoice end-of-life dates and the PSTN switch-off, not any claim that Mitel has stopped.
On-premise MiVoice systems face real dates. MiVoice Connect security patches end on 31 December 2025 and MiVoice Office 250 technical support ends on 30 June 2026. Separately, the UK PSTN and ISDN network completes its switch-off in January 2027, so any ISDN or analogue-connected MiVoice needs a SIP migration regardless. Most UK MiVoice customers are moving inside that window.
Mitel's current cloud is per-seat SaaS built on Zoom, priced per user per month for the platform. The 3CX licence is per system and sized by simultaneous calls, so headcount does not carry a per-seat SaaS tax. We host it in the UK, bill per user per month for the managed service, put you on a 12-month-then-monthly contract, and give you a direct UK relationship rather than a platform whose underlying partner has changed twice recently.
No. We rebuild your MiVoice dialplan, IVR menus, hunt groups, and out-of-hours routing inside 3CX during provisioning. You keep the behaviour your callers and staff are used to, on a supported platform.
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