In May 2023 Mitel announced it was selling its on-premises business to RingCentral and going cloud-only. Premises customers — MiVoice Business 3300 ICP, MiVoice Office 250, SX-200 ICP, MX-One — face a much narrower long-term roadmap, and the SX-200 reached end-of-life in December 2024. Even where official EOL hasn't been published, many customers describe a "feels-like-EOL" stance from the channel.
Mitel announced in May 2023 that it was selling its on-premises CCaaS/UCaaS business to RingCentral — the Mitel cloud tech effectively becoming the underlying platform for Avaya Cloud Office and RingCentral's broader UC stack — and that Mitel itself would re-focus on a narrower set of cloud and contact-center offerings. The practical effect for premises customers is that the company you bought your MiVoice Business or SX-200 from is no longer prioritizing the product you own.
The SX-200 ICP officially reached end-of-life in December 2024. MiVoice Business 3300 ICP and MiVoice Office 250 are still supported, but channel partners report shrinking R&D investment, slower fix cadence, and a clear push toward MiCloud / RingCentral migrations on every renewal conversation. Several long-time Mitel resellers we work with have already pivoted their primary recommendation away from on-prem Mitel.
Mitel still ships an active cloud product, so this isn't the "scavenger hunt for parts" story you get with Nortel or Toshiba. But the trajectory is unmistakable, and the right move for most premises customers is to leave on their schedule — not on the schedule a forced cloud migration eventually picks for them.
If you're running one of these, we have a playbook for your migration.
Step-by-step. No surprises. Your existing Mitel system stays operational the entire time.
Send us a screenshot of System Administration Tool, MiCollab, or your MiVoice Business Manager. Tell us the model, user count, trunk type (SIP/PRI/analog), and which features you actually use. We size the migration from there.
Auto-attendant trees, hunt groups, ring groups, time-of-day routing, Embedded Voicemail and NuPoint voicemail boxes, ACD queues — we rebuild it all in voip.army before the cutover.
Every DID and main number currently on your Mitel system ports to voip.army for free. The cutover is sub-5-second — no calls lost.
Mitel 6900-series (6920, 6930, 6940) and most 6800-series SIP phones can be reflashed for voip.army — we help with the firmware swap and config push. Older MiNet handsets (Superset, early 5300-series) won't survive the move; we quote Yealink or Grandstream replacements at cost.
Decommission the MiVoice Business, SX-200, or MiVoice Office 250. Stop renewing software assurance. Recycle the equipment.
"We had a MiVoice Business 3300 running our law firm — 38 attorneys plus support staff, three offices on one cluster. After the 2023 announcement our reseller started pushing us to MiCloud and the pricing went sideways. voip.army migrated all three sites in under a month, kept our existing 6940 phones with a reflash, and rebuilt our hunt groups and after-hours routing exactly. We're saving roughly $1,850 a month versus what the renewed Mitel quote would have been."
The questions we get from Mitel customers considering the move. If yours isn't here, ask.
Talk to migration team30-day free trial. Free migration assistance from a team that's done this hundreds of times. Your Mitel stays running the entire time — no risky big-bang cutover.