Find out what your voice environment may really be costing you.

Six questions show whether your Microsoft licensing already includes Teams Phone, and how many extensions you’d actually need.

  • Whether your Microsoft licensing already includes Teams Phone
  • How many extensions you’d likely license, in three scenarios
  • Where spend and hardware may overlap

Your result shows on screen. No email needed.

Your environment

Rough numbers are fine. That’s rather the point.

A rough count is fine.
Leave blank if you don’t know. The tool still works.
Handsets, not softphone users.

Your entitlement

How many users you’d actually license

Gartner’s 2026 UCaaS Magic Quadrant found enterprises cutting their telephony footprint by 10–50% of users on the way to cloud. Applied to your estate:

Users you’d license Phones likely unused

ScenarioReductionUsers licensedAnnual Teams Phone cost at list

Which one you are isn’t a guess. It’s in your call records.

Want the full breakdown?

Every finding, every assumption behind these numbers, and a PDF you can send to whoever owns the budget.

What you may be carrying twice

Hardware exposure

What this doesn’t include. PSTN connectivity (calling plans, carrier contracts, session border controllers), migration services, contact center, or compliance recording. All figures are list prices, not your negotiated rate. This is a sizing exercise, not a quote.
About ZIRO

Voice is the oldest system you own. We make it the smartest.

  1. 01

    Migrate

    Teams Phone migration at enterprise scale. Numbers ported, users provisioned, call flows tested.

  2. 02

    Manage

    Direct Routing as a Service and managed operations for the whole voice estate.

  3. 03

    Make intelligent

    Voice and meeting data made ready for Microsoft Copilot and Agents.

60,000 seats
migrated to Teams Phone in six nights
16 years
in enterprise voice
1 of ~50
Microsoft Teams Phone Accelerator partners worldwide