Microsoft Teams Voice

Enterprise-grade telephony fully integrated into Microsoft Teams, managed by Claranet and supported 24x7x365.

Challenges we solve

Fragmented communication tools

Your team juggles separate systems for phone calls, video meetings, and instant messaging — creating friction, missed calls, and a disjointed user experience.

Legacy PBX reaching end of life

Your on-premise phone system is ageing, expensive to maintain, and unable to support modern hybrid working patterns across multiple locations.

Complex telephony migration

Moving to cloud-based voice feels daunting — number porting, SIP configuration, and user training require specialist expertise you may not have in-house.

Limited visibility of call activity

Without integrated analytics, you lack insight into call volumes, wait times, and agent performance across your organisation, making it hard to optimise resources.

What is Microsoft Teams Voice?

Claranet Teams Voice brings enterprise telephony directly into Microsoft Teams, allowing your people to make and receive external phone calls from the same application they use for chat, video, and collaboration. It eliminates the need for a separate phone system and a Microsoft Calling Plan licence.

The service works by connecting Microsoft Teams to the Claranet Hosted Voice platform and the global telephone network via SIP trunks and a Claranet-hosted Session Border Controller (SBC) using Microsoft's Direct Routing technology. This gives you carrier-grade voice with the flexibility and familiarity of Teams.

Teams Voice can be deployed as a standalone solution for Teams-only organisations or as part of a hybrid deployment where some users stay on traditional IP phones while others use Teams. Claranet handles the design, build, and ongoing management of the SBC platform, with 24x7x365 support.

Key Benefits

External calling directly from Microsoft Teams
No Microsoft Calling Plan required
Geo-redundant SBC with automatic failover
Integrated call analytics via Tollring iCall Suite
Hybrid deployment option with Hosted Voice users
24x7x365 managed support from Claranet

Why Claranet?

10,000+ Customers across Europe

Microsoft Cloud Solution Provider (CSP)

24/7 Support, 365 days a year

BT Voice platform partner

Service components

SBC Platform

Geo-redundant AudioCodes SBC pair managed by Claranet, bridging Hosted Voice and Teams.

Direct Routing

Microsoft's Direct Routing technology connects Teams to the PSTN via Claranet SIP trunks.

Hybrid Deployment

Mix Teams Voice and Hosted Voice users within the same tenant for maximum flexibility.

Call Recording

Cloud-based PCI DSS compliant recording with storage options of 30 days, 180 days, or 7 years.

Tollring Analytics

Integrated call analytics platform providing dashboards and reports on inbound and outbound activity.

Technical capabilities

Deployment flexibility

Choose from MPLS, Internet Only, or Hybrid deployment models. For hybrid environments with standard Hosted Voice users, Claranet MPLS is recommended to protect voice traffic quality across your estate.

Concurrent call licensing

SBC capacity is scaled using a 1:10 ratio of concurrent calls to users. Licences are purchased in packs of 10 as one-off setup costs. A 100-user deployment typically requires 10 concurrent call licences.

Site-level call features

Auto Attendants, ACD Call Queues, Hunt Groups, Call Director, and Holiday Schedules are all available at the site level. These features work across both Teams Voice and Hosted Voice users seamlessly.

Number management

Full support for UK geographic (01/02) and non-geographic (03xx) numbers. Port existing numbers into the platform or provision new ones. Emergency services database registration included for compliance.

User licence tiers

Choose from SIP Trunking (basic), Functional, Fixed, or Mobile user licences depending on feature requirements. Bolt-ons include CRM integration via Go Integrator, Office UC desktop softphone, and more.

Office 365 integration

Claranet is a Microsoft CSP and can provide Office 365 licences alongside Teams Voice. Optional managed administration of your entire Office 365 tenant, including Teams user configuration via PowerShell.