Business voice cost comparison.
Legacy business voice is being sunset — major carriers are exiting analog and TDM voice, and organizations that haven't shopped their DIDs, toll-free numbers, and trunking in years are about to. Enter your current environment and the quotes you're weighing — SIP trunking, Teams Phone in its different forms, or UCaaS seats — and see the true monthly and per-user cost, side by side.
The true cost, side by side.
Estimates only. This tool produces estimates based on the numbers you enter. It is not a quote and not a guarantee of pricing. Voice migrations also involve porting timelines, E911 configuration, fax and analog dependencies, and — for government environments — cloud authorization requirements, none of which appear in a price comparison. Unravyl Advisors provides this tool for planning purposes.
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Why business voice is getting shopped right now.
Legacy voice is being sunset. Major carriers are exiting analog and TDM voice services, PRI-era contracts are aging out, and organizations that haven’t touched their voice environment in years are being forced to — which means DIDs, toll-free numbers, and trunking that renewed on autopilot for a decade are suddenly in play. That’s an opportunity, not just a disruption: voice re-procured deliberately almost always costs meaningfully less than voice that accumulated. The comparison is between models, not just vendors — SIP trunking priced per path, Teams Phone in its three forms, and full UCaaS seats are different cost structures for the same phone call.
The Teams Phone decision, plainly.
Most organizations comparing voice today have Microsoft Teams in the building already, which puts Teams Phone on every shortlist. It comes in three forms with different economics: Calling Plans (Microsoft is the carrier — simplest, usually priciest per user), Operator Connect (a certified operator delivers PSTN into Teams — operator pricing with Teams-native management), and Direct Routing (your SIP trunks connected through a border controller — the most flexible and usually the lowest per-user cost at scale, with the most moving parts). Government environments change the answer: GCC, GCC High, and DoD tenants have different pricing, fewer certified operators, and calling options that exist commercially but not there. A commercial quote does not carry over — which is exactly why the tool asks which environment you’re in.
Frequently Asked Questions
Is this a quote?
No — it's an estimate built from the quotes you enter. Voice pricing varies by provider, volume, and negotiation.
What's the difference between Calling Plans, Operator Connect, and Direct Routing?
All three put PSTN calling into Microsoft Teams. Calling Plans make Microsoft the carrier. Operator Connect brings a certified third-party operator into Teams natively. Direct Routing connects your own SIP trunks through a session border controller. Cost, flexibility, and management overhead differ meaningfully — that's the comparison the tool is built for.
We're a government contractor on GCC High — does this still apply?
The tool applies; the market is smaller. Government tenants have different pricing and fewer certified options, and some calling models available commercially aren't available there. Enter quotes that are actually valid for your environment — the tool flags this when you select a government cloud.
What happens to our fax lines and analog devices in a voice migration?
They need their own plan — analog dependencies are the most common thing left behind in voice migrations. Fax, alarm dialers, and elevator phones don't move to Teams; they move to analog adapters or dedicated replacement services. Our POTS replacement calculator covers that side.
