Keep Your Business Numbers While Moving to Microsoft Teams

Natalie Strange

Managing Director @ RPS Telecom

October 17, 2025

Why SMEs can benefit from Porting Numbers to Microsoft Teams

For many SMEs, Microsoft Teams has become the go-to platform for collaboration, conferencing, and voice communications. It offers integrated calling, messaging, and meetings in one place, making it easier for teams to stay connected. But as more businesses adopt Teams, an important challenge has come to light: how to keep existing business phone numbers when porting to Microsoft Teams.

The good news is that with RPS TeamsTalk, you can keep your existing numbers and still enjoy seamless voice integration within Teams. Rather than porting your numbers directly into Microsoft’s calling platform, RPS TeamsTalk uses RPS Telecom’s system to route calls to your Teams users — maintaining your business identity and ensuring a smooth, reliable experience.

Porting your business numbers to Microsoft Teams offers a range of benefits, including:

Seamless communication: Employees can make and receive calls directly in Teams, from any device, anywhere.
Cost efficiency: Reduce spend on traditional PBX systems and consolidate tools under one Microsoft 365 subscription.
Professional continuity: Retain the phone numbers your customers already know, ensuring consistent contact and brand recognition.
Scalability and flexibility: Easily add or manage users as your business grows, without complex telecom infrastructure.
Integrated collaboration: Combine calls, chats, and meetings in one place to boost efficiency and customer responsiveness.

With RPS TeamsTalk, SMEs can future-proof their communications, simplify their setup, and deliver a connected, agile customer experience — all while keeping their established business numbers.

The Challenge: Porting Existing Numbers

Businesses rely on their phone numbers. They are part of your brand identity, trusted by clients, and often tied to years of marketing and reputation-building. Losing them can lead to confusion, missed calls, and operational disruption.

Increasingly, we are hearing from our customers and partners that porting existing numbers directly into Microsoft Teams isn’t always straightforward. Some businesses are being forced to accept new numbers, which creates unnecessary complications for staff and clients alike.

When this happens, many companies instinctively turn to their IT teams or current suppliers for help. But porting business numbers and setting up enterprise-grade voice services in Teams is a specialised telecom challenge. While IT teams excel at software, networks, and systems integration, they aren’t always equipped to solve complex communications issues. That’s where a specialist provider like RPS Telecom comes in. Our Teams integration solution was designed — to remove that limitation. Instead of relying on Microsoft’s built-in number porting process, RPS Telecom connects your existing numbers through our own network, seamlessly pushing calls to your Teams environment.

The Limitations of Larger Providers

Large telecom organisations may have global reach and extensive resources, but SMEs often find them slow, bureaucratic, and less responsive to individual needs. Processes can be rigid, solutions one-size-fits-all, and personal attention limited. For smaller businesses, it can feel like these providers simply don’t “care” about your specific challenges.

In contrast, agile small business telecoms operators like RPS Telecom can move quickly, respond personally, and provide tailored solutions for each customer. When every call and every number counts, having a provider that prioritises service and flexibility makes a significant difference.

SMEs Choose RPS Telecom for Microsoft Teams Number Porting

When it comes to keeping your business numbers while moving to Microsoft Teams, choosing the right partner is crucial. With RPS TeamsTalk, we offer a purpose-built solution that integrates your voice services with Teams — without the need to port numbers directly to Microsoft.

Here’s why SMEs trust RPS Telecom for Microsoft Teams number porting:

Agile, responsive service: Our team can act quickly to port numbers, configure Teams calling, implement solutions, adapt to changes, and respond to challenges in real time.
Personalised Microsoft Teams setup: Every business is unique. We work closely with you to understand your needs, ensuring that your communications setup works exactly as it should.
Specialist expertise in Teams Voice Integration: From number porting to Direct Routing and call flow design, our engineers specialise in optimising Microsoft Teams as a complete business phone system.
Seamless number retention: We aim to keep your existing numbers wherever possible, preserving your business identity and client trust.

By combining Microsoft Teams collaboration with RPS Telecom’s proven telecom expertise, RPS TeamsTalk delivers the best of both worlds — a unified communications platform with the flexibility and reliability your business deserves.

What our clients say

“RPS are a real pleasure to deal with. The service they provide is fast, efficient and reliable. All the staff are very friendly and helpful and they have a “can do attitude”. We are always kept up to date on support tickets or installation changes and upgrades, which is so important. Great company!”

Learn more here

Supporting IT Teams, Not Competing

Another important benefit of working with RPS Telecom is that we complement your IT teams rather than compete with them. Because we do not offer general IT services, we work in partnership with IT providers to solve specific telecom challenges. This partnership frees IT teams to focus on networks, systems, and software, while RPS ensures your voice communications are integrated smoothly and efficiently.

This collaboration is particularly valuable for SMEs that rely on IT providers for infrastructure but need specialised support for business communications. Our expertise fills the gap, helping teams avoid costly disruptions or mistakes.

Real-World Impact for SMEs

Our clients span legal, financial, healthcare, and property sectors, and they consistently tell us that keeping existing numbers while moving to Teams is a top priority. For example:

A law firm recently transitioned to Teams with RPS’s help, keeping all client-facing numbers intact and avoiding confusion among long-standing clients.
A healthcare practice relied on RPS to integrate Teams calling across multiple locations, ensuring staff could communicate seamlessly without losing continuity.
An estate agency maintained its established contact numbers, avoiding disruption to prospective buyer and tenant communications during the switch to Teams.

These examples show how RPS’s agile approach and specialist knowledge make a tangible difference for SMEs.

Large Telecoms Provider vs Agile Telecoms Specialist

When it comes to modern communications, when challenges like these occur businesses naturally ask: who can provide the better-quality service? A large, slow-moving provider, or a smaller, agile specialist? For SMEs that value responsiveness, expertise, and personal attention, the choice is clear.

At RPS Telecom, we combine deep experience in voice and communications with a focus on customer service. We understand the pressures SMEs face, and we provide solutions that keep operations running smoothly while modernising your communications setup.

Keep Your Numbers. Upgrade Your Calling.

Moving to Microsoft Teams doesn’t mean losing your business identity. With RPS TeamsTalk, you can keep your existing phone numbers and start making and receiving calls directly within Teams — no complex porting, no downtime, no disruption.

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