Zoom Certified Integrator
Retire your on-premise Mitel PBX or MiCloud Connect and move to Zoom Phone, with numbers ported with zero downtime, MiVoice extensions, auto-attendants, hunt groups and e911 rebuilt natively. One cloud platform for calls, meetings and chat.
Yes, you can migrate from Mitel to Zoom Phone. Codimite, a Zoom Certified Integrator, ports your numbers (LNP) with zero downtime and rebuilds your extensions, MiVoice auto-attendant trees, hunt groups, call queues, voicemail and e911 natively in Zoom Phone, running your existing Mitel system in parallel until each site is validated. The value is the disciplined config rebuild and porting plan, not a risky lift-and-shift off legacy hardware.
Why migrate
On-premise MiVoice Business / 3300 ICP means PBX servers, gateways, maintenance contracts and end-of-life roadmaps. Zoom Phone is fully cloud, with no boxes to patch or replace.
Mitel's portfolio has been through ownership and product-line changes; many estates are on platforms with limited investment ahead. Moving to Zoom Phone removes that risk.
If you already pay for Zoom Meetings or Zoom Team Chat, Zoom Phone lives in the same Zoom Workplace platform, so leaving Mitel removes a separate phone system and vendor.
Calls, meetings, chat and whiteboard under a single admin console, identity provider and security policy, instead of a standalone PBX bolted to your Zoom stack.
Call summaries, voicemail transcription and next-step prompts from the same AI assistant that summarizes your meetings and chats.
What we migrate
| Mitel element | Rebuilt in Zoom Phone | Notes |
|---|---|---|
| DIDs & main numbers | Ported via LNP | Carrier / SIP-trunk port in a scheduled window; zero downtime |
| Extensions & dial plan | Zoom Phone extensions | MiVoice numbering scheme preserved where possible |
| Auto-attendant / IVR | Native auto-attendant trees | Menus and business hours rebuilt and tested |
| Hunt groups & ring groups | Zoom Phone call queues | Routing, overflow and members reconstructed |
| Voicemail & greetings | Zoom voicemail | Greetings re-recorded/re-uploaded; boxes provisioned |
| e911 / emergency addresses | Dispatchable locations | Registered and tested per site |
| Mitel handsets / SIP devices | Zoom-certified devices | Proprietary Mitel phones swapped; certified SIP re-homed where viable |
| SIP trunks / PRI | Zoom Phone numbers / BYOC | Carrier services migrated or replaced |
| Users & identities | Zoom users | Mapped to your IdP / SSO |
Device strategy and carrier port timelines are the main schedule drivers, confirmed during the assessment.
Our process
We audit your Mitel platform (on-prem MiVoice or MiCloud), numbers, extensions, auto-attendant/hunt-group logic, devices, SIP trunks and e911 footprint, and confirm what ports and what gets rebuilt.
We map your dial plan, routing and locations to Zoom Phone, plan device swaps, and prepare the LNP porting paperwork with your carrier.
Zoom Phone is provisioned alongside Mitel (extensions, IVR, queues, voicemail and e911) so both systems run in parallel.
A pilot group validates call quality, routing and devices before any numbers move.
Numbers cut over in scheduled LNP windows with rollback ready; zero downtime per number. Mitel is decommissioned only after validation.
We test every route and e911 path, then provide adoption support and 24/7 cover through the cutover.
Why Codimite
Phone migrations are our core practice, delivered by a Zoom Certified Integrator who decommissions legacy MiVoice estates cleanly with zero-downtime porting.
Get a QuoteZoom Certified Integrator. Phone migrations are our core practice, not a side service.
Legacy-PBX experience. On-premise estates (MiVoice, ICP, PRI/SIP trunks) decommissioned cleanly with documented porting and rebuild runbooks.
Zero-downtime porting discipline. Parallel run, scheduled LNP windows and rollback plans so calls never drop.
e911 compliance built in. Dispatchable locations registered and tested per site before go-live.
24/7 support & clear reporting. Route-by-route validation and progress visibility through every wave.
FAQs
Yes, both on-premise Mitel (MiVoice Business, Office 250, 3300 ICP) and cloud Mitel (MiCloud Connect). We document your dial plan, port numbers via LNP and rebuild extensions, IVR and queues natively in Zoom Phone.
Mitel-proprietary handsets generally do not register to Zoom Phone, so we plan device strategy up front: Zoom-certified SIP handsets are provisioned, and reuse is confirmed where viable during assessment.
No. Zoom Phone runs in parallel with Mitel and numbers cut over in a scheduled LNP window, typically minutes per number, so there is no service gap.
One to two weeks for a single site; four to ten weeks for multi-site MiVoice estates, driven by carrier port timelines (often 7 to 15 business days), device swaps and IVR/queue rebuild.
They are rebuilt natively in Zoom Phone from documented MiVoice logic, then validated path-by-path before cutover, cleaner than a lossy lift-and-shift.
Pricing is scoped to user count, number of sites, device strategy, routing complexity and trunking. Start with a free assessment for a fixed quote.
Moving off a different phone system too? See our Zoom Phone migration services for every supported source platform.
Codimite ports your Mitel numbers with zero downtime and rebuilds your auto-attendants, hunt groups, voicemail and e911 natively in Zoom Phone, retiring legacy MiVoice hardware.
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