Microsoft 365 Business Voice


You use Microsoft 365 for internal and external collaboration, to chat, hold meetings and share ideas.

Why not use it for phone communications too?

Microsoft 365 Business Voice is a modern, app-based telephony system that integrates into Teams



Modern communications

Contacts and calendar are connected across Teams and Outlook, and chat or share screen while on calls



Cost effective

Choose the most suitable pricing option for your business, remove third party conferencing charges and no need to maintain a PBX


Highly flexible

Call from any device with the Microsoft Teams app – laptop, mobile – and share the same number as your desk phone



Advanced features

Dial-in numbers for call conferencing, AI voicemail and inline chat transcription, and real-time captioning


Simpler management

Add users, phone numbers and calling plans easily via the Microsoft 365 admin console you are already using



High availability

Delivered from Microsoft Azure cloud – one of the most innovative, capable and resilient platforms available

How does it work?


Business Voice can be added to any Microsoft 365 subscription that includes Microsoft Teams and is suitable for companies of up to 300 users.

Simply choose the set-up most suitable for your needs:



Microsoft 365 Business Voice

  • Microsoft becomes your sole telephony and collaboration platform
  • Use generous default per user domestic and international calling plans, or choose alternative plans according to your users’ needs
  • Port existing numbers across, request new ones or mix and match


Microsoft 365 Business Voice with direct routing

  • Connect your existing telecoms provider to Teams if preferred or necessary
  • Keep your existing phone numbers without porting them
  • Use your telecoms providers’ calling plans

MicrosoftTeams-image (25)


How Calligo helps – a 30 second case study


   Client: 90+ user professional services firm across Germany, India, Canada and UK, all on Office 365 E3 subscriptions 


Problem: Disparate telephony systems, high management costs and high internal calling costs


Solution: Calligo helped choose the most suitable subscription for the business – Business Voice with default calling plans due to budget and simpler solution design – and deployed it to all users.  


Results: Removal of third–party conferencing system, global consistency, reduced costs and better user experience


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