Teams Mobile Extend

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

Diagram showing Microsoft Teams mobile adoption with existing PSTN lines and number porting.
Diagram showing Teams mobile dashboard on a laptop with a mobile number connected.

What is Teams Mobile Extend?

Teams Mobile Extend is the seamless way to bring your Microsoft Teams business number directly to your mobile phone’s native dialer.

Say goodbye to juggling apps or relying on mobile data! With Callroute’s innovative eSIM technology, you can make and receive professional calls over your cellular network, anywhere, anytime, with crystal-clear reliability.

Keep your work and personal calls perfectly separate, maintain full control of your business communications, and empower your team to stay connected without compromise. Elevate your Microsoft Teams calling experience with Callroute Teams Mobile Extend, where mobility meets productivity.

Why use Teams Mobile Extend

Microsoft Teams Extend enables you to use your business phone numbers on multi-sim enabled personal mobiles while ensuring you remain in control of your business profile.

Keep existing direct dial numbers

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

Answer calls using Teams or mobile devices

Continue to use your current PBX alongside Teams with integrated calling

No mobile internet required

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

Keep personal & business identities separate

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

How does it work?

Microsoft Teams Extend connects your mobile phone using an eSIM to Teams so you can use your landline number on your mobile.

Enable Teams Phone

Assign the Teams Phone licenses to your account, then assign yourself a phone number from your provider.

Enable SIP Gateway

Enable calling via SIP registered devices on your Teams Calling Policy.

Pair With Callroute Go

Use the Callroute Go app to pair your Teams account with Callroute Go.

Install & Activate Your eSIM

Scan the QR code to install and activate your eSIM.
Diagram showing a mobile device with an incoming call with Callroute Go.

How Teams Mobile Extend compares to Teams Phone Mobile

Feature / Requirement

Mobile Teams Extend

Callroute horizontal logo white an 8x8 company.

Teams Phone Mobile

Microsoft teams icon representing its integration with Callroute.

Teams app-less calling

Mobile and Teams client call answering

Teams voicemail

Teams Call Queue answering

Mobile GSM call answering

Native mobile dialer

Compatible with Teams reporting and compliance features

Use business landline direct dial numbers

Compatible with all Operator Connect providers

Compatible with Direct Routing

Use your existing business line minutes

Send/Receive SMS

Escalate mobile GSM call to Teams Meeting or transfer to another Teams user

Use mobile number in Teams client

Where is Teams Mobile Extend available

Subscribers may utilise their plans throughout the year in any Home Country, and on a temporary basis of up to 90 days within any 365-day period in Home Away Countries, without incurring additional charges.

How using Teams Mobile Extend Benefits your business

Most solutions stop at Teams or Webex Calling. Callroute goes further – an award-winning platform that unifies, automates, and simplifies modern voice. From simple setups to complex hybrid environments, manage users, numbers, and policies from one powerful portal.

Maintain Business Communication Continuity

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

Increased Auditing And Compliance

Continue to use your current PBX alongside Teams with integrated calling

Reduce Business Costs & Carbon Footprint

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

Boost Overall Productivity

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

Use Cases

If you have employees or teams that work on the go, having access to consistent internet connectivity isn’t guaranteed. These are some of the common roles that are affected by poor internet when trying to call through Teams. Whether your business is global manufacturing, automotive, education, construction, retail, banking and financial services, or care, extending Teams Phone to eSIM with Callroute Go is for you.

Courier & Logistics

Delivery or logistics drivers who need to call customers regarding deliveries using a business number.

Education Support

Mobile student support service workers who need enhanced security and privacy.

Mobile Healthcare

District nurses, doctors, and care givers who need to be contactable via a local business number.

Field Engineers

Remote field engineers who work on the go and need to be able to make and receive calls hands-free.

Try Callroute Go Free For 30 Days

Got a Direct Routing or Operator partner? Need to extend your calling to to mobile? Our Go Now plan is made for you.

Roam free in 25 countries

Use your existing numbers

Operator Connect & Direct Routing

UK technical support

30-day rolling contract

Teams Mobile Extend: Callroute Go eSim

Extend Teams Phone capabilities to mobile devices without the Teams app or internet, using our mobile eSim solution.

From £11.50 monthly per user

Add onto any plan

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 Teams Mobile Extend with Callroute Go free for 30 days. No credit card and no commitment required. Your trial includes:

  • Use your existing numbers
  • Operator Connect & Direct Routing
  • UK technical support
  • 30-day rolling contract

To get started, contact us so we can set you up. All you need is an email address, which you’ll verify during setup.

No. We are prohibited from selling Callroute Go with Microsoft Calling Plans. However, we recommend using our Go All In plan to work alongside your calling plans.

At the moment, Callroute Go is available in 4 home countries:

  • UK
  • USA
  • France
  • Sweden

This is expanding into Austria, Belgium, Denmark, Germany, Ireland, Italy, Mexico, Luxembourg, Spain and Poland by the end of 2024.

If you’re a resident of any of these countries, you’ll be able to use Callroute Go as a local mobile service. When you’re outside of these countries on travel, you’ll be able to roam free in any of our Global Pass countries. Countries not in our Global Pass will incur roaming charges. You will need to activate your eSIM in one of our home countries first.

Callroute Go uses the Teams SIP gateway to become a secondary phone device to your Teams account. You pair Callroute Go using our Teams App and your Microsoft account, then after your eSIM has been created, you scan a QR code with your mobile and the eSIM installs.

iPhone 11+ with dual eSIM support and iOS 15.4 or better.

Samsung S series, Flip and Google Pixel 6+ with Android 13 or better.

Full supported device list

Yes, you can deactivate an eSIM from the management portal.

Users answering calls using Callroute Go will benefit from the same calling features as a normal Teams Phone user in call.

  • Voicemail
  • Call forwarding
  • Teams call group
  • Call queue agent answering
  • Hold
  • Transfer
  • Compliance call recording*

*Requires compliance call recording to be deployed in tenant and the user policy enforced.

As the mobile device doesn’t need the Teams app installed, presence based calling is not available when just using Callroute Go without the Teams App as a companion.

If you have Callroute Go eSIM enabled and the Teams app on the same phone, then the phone will ring twice.

  1. As a Teams OTT data call in the Teams App
  2. As a native GSM call to the mobile device dialer

You can choose which to answer from. If you don’t want this behavior, then you can disable notifications in the Teams mobile app.

Book A demo

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