Mitel MiVoice Business
Enterprise hybrid PBX from a vendor that went through Chapter 11 in 2025 and shut its own cloud service in 2026 — the legacy option, for estates that already own it.
How we testMiVoice Business still does what it always did: an enterprise PBX for 5 to 65,000 users on Mitel controllers, your own virtualised infrastructure (VMware, Hyper-V, Nutanix, Proxmox) or AWS/Azure, with MiCollab clients, 6900-series phones, CloudLink REST APIs and, since 2025, Zoom Workplace bundled in for collaboration.
What has changed is everything around it. Mitel filed for Chapter 11 in March 2025 and emerged in June owned by its lenders with a new CEO; MiCloud Connect was shut down permanently in June 2026 with customers pointed at RingCentral; MiVoice Office 250 support ended the same month; and MiVB 10.5 is the last release for several controller families. Pricing is quote-only through partners. Trustpilot has only two reviews — no signal. We have run Mitel in production — archaic, bloated and old-fashioned. That is our direct experience, and the reason it ranks last.
Pros
- +Genuine on-prem / sovereign deployment at large scale
- +Zoom Workplace integration for collaboration
- +CloudLink REST APIs
Cons
- −Archaic, bloated and old-fashioned (our direct experience)
- −Chapter 11 restructuring, MiCloud shutdown and controller end-of-life churn
- −Opaque quote-only pricing; no native Teams integration
Specifications
| Rating | 2.3 |
| Month-to-month (entry plan) | Quote |
| Annual commit, per month | Quote |
| Min seats | 5 |
| Deployment | Hybrid |
| Sales model | Partner only |
| Public API | No |
| MCP server | No |
| Emergency 911/999/112 | ✓ |
| Integrations | Zoom Workplace, MiCollab, Salesforce +1 |
| Commitment for annual rate (months) | 12 |
Researched and drafted with AI assistance; reviewed and approved by Tim Meredith. How we use AI