Microsoft Teams Calling

Accelerate your Microsoft Teams Phone adoption by connecting your existing PSTN lines to Teams without any additional infrastructure, carrier contracts, number porting needed.

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What is Microsoft Teams Calling?

Microsoft Teams Calling is the capability within Microsoft Teams that lets users make and receive traditional phone calls (PSTN) directly from the Teams app or connected devices. To enable this, Teams integrates with PSTN services, either through Microsoft Calling Plans, Operator Connect, or Direct Routing.

With Teams Calling, your Teams users can:

  • Call landlines and mobiles via PSTN
  • Answer calls across devices (desktop, mobile, desk phone)

  • Use Teams voicemail, call routing, call queues and auto attendants

  • Keep voice services integrated with collaboration and presence features

How Callroute Integrates with Microsoft Teams Calling

Callroute enhances Microsoft Teams Calling by acting as a cloud voice routing platform that connects your telephone infrastructure to Teams, letting you choose carriers and telephony equipment freely, without being locked to Microsoft’s own calling plans.

Connect Any Carrier

Get Microsoft Teams Calling with our Direct Routing solution for Microsoft Teams Phone.

PSTN Replacement

Get Microsoft Teams Calling with our Direct Routing solution for Microsoft Teams Phone.

SIP Phone Support

Connect Webex to the PSTN – bring your own carrier or use our fully managed voice services.

Call Recording

Get Microsoft Teams Calling with our Direct Routing solution for Microsoft Teams Phone.

Automated Provisioning

Get Microsoft Teams Calling with our Direct Routing solution for Microsoft Teams Phone.

Automated Failover

Connect Webex to the PSTN – bring your own carrier or use our fully managed voice services.

How Callroute Compares against other platforms

Direct Routing for Microsoft Teams enables external PSTN calling from Microsoft Teams — users can place and receive regular calls directly from the platform.

Direct Routing is an alternative to Microsoft Calling plans and Operator Connect and has been extensively adopted due to it being the most flexible way of connecting the PSTN to Microsoft Teams.

Features

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Microsoft Calling Plans

Operator Connect

Turnkey voice connectivity with Teams

Calling plans

Pay as you go calling

Voice grade network connectivity

Bring your own numbers

Buy DDI numbers

Global resilience & high availability (99.99%)

CDR Reporting

Number management

Shared number calling

Global coverage

Limited Availability

Use your existing carrier

Limited Availability

Integrate with your contact centre

Integrate with your other voice platforms

Connect on-premises PSTN services

Secondary destination failover

Extension dialing

Multiple private lines

Limited to 1

Call recording

via 3rd party

via 3rd party

Connect analog phones

Connect multiple Teams tenants

Automated user provisioning of phone numbers

Orto logo representing Microsoft Teams user management.

Simple, easy to use administration portal

Pricing Plans

Currency:

GBP
  • GBP
  • EUR
  • USD

Teams Phone Essentials

Everything you need for a small business phone system for a simple price.

Teams Phone Advanced

For businesses that make more outbound calls and require call recording.

Teams Phone Professional

Suitable for larger enterprises and those with complex environments.

Teams Phone BYOC

Bring your own SIP carrier and numbers to Callroute.

No. Users:

£4.95 monthly per user

£9.95 monthly per user

N/A

N/A

Minimum users

3+

3+

20+

100+

Domestic minutes (pooled)

500

1000

300

N/A

Inclusive phone number per user

Access to self service portal

Reporting & analytics

Call recording

Optional add-on

Optional add-on

Bring your own SIP carrier

* UC Connect (e.g. connect a PBX)

Yes – see notes below

Yes – see notes below

Number inventory management

Policy & persona management

Free set-up

See notes below

Regional Availability

UK & IRE only

UK & IRE only

Global – see notes below

Global

Ability to customise bundle

Yes – see notes below

Why Businesses use Callroute

Extensive UK & global number coverage

Connect your existing on-prem phone lines to Teams without changing your hardware.

Instant provisioning with full admin control

Continue to use your current PBX alongside Teams with integrated calling.

Microsoft Teams & SIP trunking integration

Move users between your PBX & Teams keeping their current number & extension.

Regulatory compliance for global deployments

Move users between your PBX & Teams keeping their current number & extension.

Graphical reporting & real-time analytics

Connect your existing on-prem phone lines to Teams without changing your hardware.

Scalable for multi-site & multinational operations

Continue to use your current PBX alongside Teams with integrated calling.

Expert enterprise onboarding & support

Move users between your PBX & Teams keeping their current number & extension.

Easy & intuitive management portal

Move users between your PBX & Teams keeping their current number & extension.

Other companies already using Callroute

Dexcom trusts Callroute to deliver excellent service.
SLR trusts Callroute to deliver excellent service.
Fortive trusts Callroute to deliver excellent service.
The Electoral Commission trusts Callroute to deliver excellent service.
Lavazza trusts Callroute to deliver excellent service.
Banco DO Brasil trusts Callroute to deliver excellent service.
Clinigen trusts Callroute to deliver excellent service.
Rushmoor Borough Council trusts Callroute to deliver excellent service.
Oasis community learning trusts Callroute to deliver excellent service.
Bron Afon trusts Callroute to deliver excellent service.
Marylebone trusts Callroute to deliver excellent service.
The Convention Centre Dublin trusts Callroute to deliver excellent service.

Use Cases

Replace legacy phone systems

Move from on-prem PBXs to Microsoft Teams Phone with Callroute as your connectivity and numbering control layer. Migrate users and number ranges in phases, run hybrid during transition, and modernise voice without repeated re-porting, carrier lock-in or operational disruption.

Consolidate collaboration and
calling

Unify messaging, meetings and PSTN calling in Microsoft Teams, with Callroute providing carrier connectivity and centralised number control. Simplify the user experience while retaining flexibility across carriers, regions and connectivity models.

Support remote and hybrid teams

Enable employees to make and receive business calls anywhere using Microsoft Teams, while Callroute delivers resilient PSTN connectivity and number management. Maintain business identity, automate provisioning and manage routing policies centrally

What Our Customers Say

  • “Our partnership with Callroute has always been outstanding. Communication is seamless, and they consistently demonstrate exceptional customer focus. They are not just a partner; they are a true enabler of global telephony uptime. Their support is exceptionally responsive and a pleasure to work with, even on the rare occasions it’s needed.”

    Dave

    Health, Wellness & Fitness, 1,001–5,000 Employees

    Telephony Engineer in UK

  • “Happy user. Has been great. This makes it much easier to manage numbers. Ease of use and quick support when I have had any issues.”

    James

    Technical Specialist - Collaboration in US

    Packaging & Containers, 10,000+ Employees

  • “Finding CallRoute is possibly the best thing that’s happened for our telco platform. They’ve provided us with administrative and reporting capabilities that nobody else would. They’ve remained extremely flexible, allowing for outside the box thinking and customizations delivered faster than anyone would expect. We intend to stick with CallRoute for the long haul. Highly flexible, extremely attentive to requests and needs, support staff absolutely beyond compare.”

    Russ

    Telephony Architect in US

    Mechanical or Industrial Engineering, 10,000+ Employees

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Frequently Asked Questions

Yes, you can try Callroute free with a 14-day trial. No credit card and no commitment required. Your trial includes:

  • 1x UK 0330 number
  • 1x single concurrent call limit
  • Connect up to 4 Microsoft Teams tenants
  • Explore all Callroute Teams Calling features
  • Explore all Orto Teams User Management features

To get started, book a guided setup session so we can tailor the trial to your requirements. All you need is an email address, which you’ll verify during setup.

You will need a spare Microsoft 365 license that enables Microsoft Teams (F3, E1, E3 or E5) and a spare Teams Phone System License. In addition, you will need a service account with the requires admin roles assigned.
We will handle all the technical setup required to enable Microsoft Teams Phone, ensuring it meets your business’s functional needs. Note: Setting up an auto attendant and/or setting up call queues may involve one-off additional costs. Please get in touch with us to discuss your requirements.

Additionally, we will manage the entire process of porting your numbers and ensure the service is fully operational upon completion.

Rest assured, we will work closely with you to fully understand your needs upfront, so everything is clear and agreed upon before you begin. You’ll know exactly what to expect every step of the way.

Microsoft Teams has a global resilient network. Should a primary region suffer an outage, we will automatically fallback to the secondary region and tertiary region if required. In the unlikely event that a global Teams voice outage occurs, our system will detect this and automatically divert incoming calls to users’ mobiles.
Yes. In addition, Callroute is a PSTN service provider and can enable global calling out of the box.
None. Callroute is completely self-service. Our system does all the configuration and user setup tasks you’d normally have to use PowerShell and Teams Admin Center for.
No. The connection between your carrier and Teams is performed using our cloud based, elastic scale SBCs meaning that you do not need any additional infrastructure.
We support the UK and selected international markets for complete PSTN replacement services.

Note: Availability of services in international regions is subject to local regulatory compliance. Many countries require end users to provide evidence of a local address in the region or province where the telephone number is allocated.

We also support a global bring-your-own-carrier (BYOC) model. If you require PSTN replacement services in your home country, you can connect your local carrier to our platform instead.

Book A demo

Join over 150,000 other users that use Callroute to stay connected, and manage their numbers and users more efficiently.