One Business Number Across Devices
- Use a single number across mobile phones, desk phones, and the Teams app
- Present a consistent business identity on every call
One Number. Any Device. Total Flexibility
Teams Phone Mobile enables organisations to unify mobile calling directly within Microsoft Teams, allowing employees to stay reachable on a single business number across devices and locations. Pentagram delivers Teams Phone Mobile using the UK’s leading mobile networks, supporting modern, mobile-first workforces.
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What We Offer
Mobile Calling Built into Microsoft Teams
As hybrid and remote work become standard, organisations need calling solutions that move seamlessly between mobile networks and collaboration platforms. Traditional mobile and desk phone setups often create fragmented experiences and operational complexity.
Pentagram delivers Teams Phone Mobile by integrating mobile numbers directly into Microsoft Teams, allowing users to make and receive business calls through Teams or the native mobile dialer. This creates a single, consistent calling experience without compromising call quality, reliability, or enterprise control.
Unified Calling Across Devices and Networks
Businesses need simplified calling — we bring you exactly that, directly into Microsoft Teams. We support flexible, mobile and seamless collaboration by unifying mobile numbers, Teams calling and device access into a single experience.
Reliable Calling Anywhere
- Route calls over mobile networks or internet connectivity
- Maintain quality and availability across locations
Seamless Collaboration
- Escalate calls into Teams meetings or screen sharing
- Move between voice and collaboration without disruption
Unified Call History & Voicemail
- Access call logs and voicemails from Teams or mobile devices
- Keep a single record of business communications
Enterprise Policy Enforcement
- Apply Microsoft voice policies to mobile-originated calls
- Support compliance and governance requirements
Why Pentagram
Pentagram helps organisations transition to Teams Phone Mobile in a controlled and operationally aligned way. By integrating mobile calling directly into existing Microsoft environments, businesses can reduce reliance on legacy telephony while maintaining visibility and governance.
Pentagram ensures Teams Phone Mobile is configured to align with user roles, security policies, and organisational requirements. This approach simplifies voice management, supports hybrid working, and delivers a consistent calling experience across devices and locations.
Zero
Paperwork with fully digital onboarding and provisioning
1
Business number across mobile, Teams, and desk devices
Native
Teams integration for voice and collaboration
1
Management interface through Microsoft 365
Secure Call Routing
Billing & Fraud Management
Identity & Access Management
Security & Compliance Controls
Our Teams Phone Mobile includes built-in controls designed to protect voice communications while supporting your organisation's security and regulatory requirements.
We extend Microsoft's enterprise-grade security framework to ensure business communication remains compliant regardless of where calls are made from — with encrypted routing, identity controls, and policy enforcement via Microsoft 365.
Ready to Modernise Mobile Calling?
Work with Pentagram to deploy Teams Phone Mobile and deliver unified calling across devices, networks, and locations.
Contact us for a Demo GuideFrequently Asked Questions
What is Teams Phone Mobile?
Teams Phone Mobile allows a business mobile number to be natively integrated into Microsoft Teams, enabling users to make and receive calls through Teams or the mobile dialler using the same business number.
How is Teams Phone Mobile different from standard Teams Phone?
Teams Phone Mobile connects the mobile network directly to Microsoft Teams, removing the need for call forwarding or separate mobile and desk numbers.
Can users make calls using both the Teams app and their mobile phone?
Yes. Users can make and receive calls through the Teams app or the native mobile dialler, with calls appearing as business calls in both cases.
Does Teams Phone Mobile require an internet connection?
Calls can route over mobile networks or internet connectivity, ensuring call reliability even when data connectivity is limited.
Can existing mobile numbers be used?
In many cases, existing business mobile numbers can be migrated to Teams Phone Mobile, subject to eligibility and configuration.
How is Teams Phone Mobile managed?
User numbers, call policies, and reporting are managed centrally through Microsoft 365 administration tools.