Best Microsoft Teams Phone Providers

The best Microsoft Teams Phone providers and Operator Connect alternatives compared — calling plans, direct routing and managed enablement.

Ivan Elias Researched by Ivan Elias, Founder & Principal Advisor · Last updated October 2026
No fee · the whole market competes

Microsoft Teams is where your people already work — giving it real phone capability (PSTN calling, auto-attendants, E911) requires a carrier layer: Microsoft Calling Plans, Operator Connect, or direct routing through a specialist provider. We rank the Teams phone providers we quote most.

The right choice depends on your Microsoft licensing, calling geography and appetite for managed service — specialist providers typically beat DIY direct routing on reliability and compliance.

1

CallTower Best for: Managed Teams Phone at scale

Contact Center & CX · Network & Voice · UC & Collaboration

Carrier-grade Teams phone delivery with global calling and 24/7 support for multi-site organizations.

2

UniVoIP Best for: Mid-market Teams enablement

UC & Collaboration

Teams phone specialist with white-glove migration and strong E911 compliance tooling.

3

Cloudli Best for: Legacy estates moving to Teams

UC & Collaboration

Practical Teams enablement plus POTS replacement for organizations modernizing old telephony.

4

AudioCodes Best for: Direct routing infrastructure

Contact Center & CX · UC & Collaboration

The SBC and session-management standard behind many Teams voice deployments — for IT teams running their own stack.

5

Sangoma Best for: Hybrid Teams + PBX estates

Contact Center & CX · Network & Voice · SD-WAN

Bridges Teams calling with existing FreePBX/on-prem systems during staged migrations.

6

Intermedia Best for: Managed everything else too

Contact Center & CX · Network & Voice · UC & Collaboration

Teams options plus workspace bundling under one partner-managed roof.

How we ranked these providers

Scored on Teams integration depth (30%), calling plan geography and value (25%), managed delivery and support (20%), E911/compliance (15%) and contract flexibility (10%). Teams Phone itself is licensed via Microsoft; provider pricing is quote-based. Editorial and independent.

The data behind this ranking: we track what businesses actually pay — negotiated pricing vs. list across 200+ providers, promo reverts and renewal drift — from live quote flow, not analyst estimates.

Frequently asked questions

What is Microsoft Teams Phone?
Microsoft's cloud calling add-on that gives Teams real phone numbers, PSTN calling, auto-attendants and PBX features — licensed through Microsoft plus a calling method (Calling Plans, Operator Connect or direct routing).
Operator Connect vs direct routing — which is better?
Operator Connect is simpler (carrier integrates natively with Microsoft); direct routing is more flexible and sometimes cheaper at scale, but needs SBC infrastructure and expertise. Most mid-market teams should compare both via quotes.
How much do Teams Phone providers cost?
Beyond Microsoft licensing, expect $10–35 per user/month for calling and managed services depending on geography and support level.

Put every provider on this list in competition

Competing quotes side by side — no fee for clients, with better-than-list pricing.

Speak with an advisor

Tell us what you need and an advisor will bring the whole market — 200+ providers — to your table.

No fee for clients — providers compensate us from their marketing budgets. No spam, no obligation.