Your answer to Calling for Microsoft Teams.

Migrating your existing PBX or adding voice services to MS Teams shouldn’t be a pain.

Make decisions with confidence

Deploy, support, and manage your MS Phone System with a plan that clearly defines what recipe to follow and where to start.

Mitigate risk and complexity

Connect your existing PBX to MS Teams including all your third-party devices, analog, fax, call center, you name it. You’re covered!

Manage and support any system

We handle all the heavy lifting and provide simple self-service tools 24x7x365 so you can enjoy the smoothest experience around.

Crunching the numbers on Calling for Microsoft Teams? They should add up to ZIRO.

Fully supported
Partially managed and supported
No support
PSTN Calling in any Country
Telephony Redundancy & Surviability
Regulatory Compliance
Managed Dynamic E911
Analog Device Support
Hybrid System Migration Path
Help Desk Enablement – No Powershell
Microsoft Phone System Support
Network Issue identification Support
MACDs – Call Queue, Auto Attendants, Policies
Contact Center
Monthly Quality Reports and Quarterly Reviews

Empower your help desk.

License users, assign available phone numbers and the correct policies (like emergency calling) with a few clicks, including Direct Routing.

No PowerShell scripts. No complex templates. And no need to access the MS Teams Admin Center.


Provisioning for Microsoft


Voice Calling for Microsoft Teams. Solved.

Send and receive external calls from anywhere and keep all your locations connected without having to negotiate and manage multiple contracts, global providers and support processes.


“ZIRO took the hassle out of setting up calling in Microsoft Teams. Their Microsoft and Cisco expertise made the transition to Teams easy.”
Aarron Macias
Senior VoIP Engineer
Alliance Bernstein
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Ready to go from headache to hassle-free?

No throwing darts at proposals. No hidden-terms contracts. No battling through the back-end. No nonsense, no run-around.