Teams Phone Mobile | Pentagram

MS Teams Phone

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.

Professional using laptop and mobile phone for business calling
Smartphone and tablet displaying Microsoft Teams calling interface
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 and we bring you exactly that - directly into Microsoft Teams. We support flexible, mobile and seamless collaboration between workforces by unifying mobile numbers, Teams calling and device access into a single experience.

Core capabilities include:

One Business Number Across Devices

Use a single number across mobile phones, desk phones, and the Teams app.

Reliable Calling Anywhere

Route calls over mobile networks or internet connectivity to maintain quality and availability.

Seamless Collaboration

Escalate calls into Teams meetings, screen sharing, or group collaboration without disruption.

Unified Call History & Voicemail

Access call logs and voicemails from Teams or mobile devices.

Enterprise Policy Enforcement

Apply Microsoft voice policies and compliance controls to mobile-originated calls.

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.

We ensure 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.

0

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

Encrypted voice traffic with controlled routing across devices and networks.

Identity & Access Management

Ensure calls present organisational identities rather than personal numbers.

Compliance-Ready Architecture

Support logging, monitoring, and policy enforcement via Microsoft 365.

Security & Compliance Controls

Our Team Phone Mobile includes built-in controls that are 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 the calls are made from.

Additional Capabilities for Hybrid Work

Beyond core calling, Teams Phone Mobile supports broader communication and management requirements.

  • Seamless Microsoft Integration

    Connect voice services with Microsoft 365 applications and workflows.

  • Unified Administration

    Manage users, numbers, and call activity from a central platform.

  • Hybrid Work Enablement

    Support mobile, remote, and in-office teams with consistent calling experiences.

  • Enterprise-Grade Security

    Apply Microsoft security and policy controls across voice services.

Ready to Modernise Mobile Calling?

Work with Pentagram to deploy Teams Phone Mobile and deliver unified calling across devices, networks, and locations.

Contact us

FAQs

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.