How Microsoft Teams and SIPPIO answer the call for VoIP telephony

While businesses have continued to embrace new cloud and AI-powered innovations to streamline workflows and boost productivity across their organisation, many are still overlooking a key area of their technology estate. 

Despite the 2027 deadline for PSTN and ISDN retirement creeping into view, and industry guidance to action plans by the end of 2025, some of your customers are likely among the organisations yet to migrate away from traditional telephony solutions.  

With the retirement date edging closer, organisations are finally switching on to the need to refresh their phone systems. But where business comms may have been a dedicated discipline in its own right in years gone by, this is now falling under the already extensive remit of internal IT teams, and in turn supporting IT providers. 

This is where Microsoft Teams Phone steps in, a cloud-based calling solution that combines dedicated VoIP calling with the existing collaboration functionality of Microsoft 365.  

It’s an obvious choice for IT leaders tasked with telephony transformation, and offers a great avenue for you to extend the value of your customers existing Microsoft estate. 

The case for Microsoft Teams Phone 

Microsoft Teams has become an essential part of day-to-day business for over 300 million weekly users, but many still haven’t tapped into its built-in voice capabilities. Microsoft Teams Phone offers a dedicated soft phone solution built to add professional call functionality to the existing M365 and Microsoft Teams experience. 

With Teams Phone, calls become part of the wider Microsoft 365 workflow. Need to escalate a customer question? Move a call to video in one click. Want to loop in a colleague? Bring them in seamlessly. Calls can also be recorded and shared for later review or compliance tracking, and it’s also perfectly adept when facing the demands of high-volume call environments such as contact centres. 

And for customers using new Microsoft innovations like Copilot, pairing Teams Phone with generative AI could unlock even more value, from real-time meeting summaries to automated capturing of action items eliminating the need for manual note-taking. 

Teams Phone turns voice from a standalone feature into a seamless part of daily workflows, driving productivity with every call alongside a host of benefits: 

1. Increased mobility for modern business demands 

The way we work has changed forever. Whether it’s hybrid working models, fully remote teams, or global project collaboration, location can no longer be a barrier. Teams Phone supports this shift by turning any laptop or mobile into a business-ready phone. Voicemails, transfers and conferencing work seamlessly, with professional call quality from anywhere. 

Instead of relying on mobiles or third-party apps, employees can handle all voice communication within the familiar, secure Teams environment. 

2. Scale deployments at speed 

Unlike bulky PBX rollouts of the past, Teams Phone can be deployed virtually without the need for any physical connections or on-site engineering. This not only supports faster adoption, but allows for staggered deployment across specific business units, departments or branches. Licences can be issued via the Exertis Cloud platform, and managed easily  via the M365 admin site making it easy for SMB and specialist solution providers to get customers up and running without delays. 

Scaling is just as simple. Adding users or opening new locations takes minutes - with no new hardware, wiring, or long-term contracts to worry about. 

3. Lower operational costs 

Microsoft Teams Phone has become a more cost-effective choice in comparison to traditional phone systems. By replacing hardware-heavy systems and eliminating long-distance charges, organisations can reduce overheads while still delivering high-quality, enterprise-grade voice services. 

4. Faster decisions and easier collaboration  

For businesses with remote or distributed teams, delays in communication can slow everything down. With Microsoft Teams Phone, your customers can encourage faster, more responsive working. Voice calls allow teams to solve problems in real time, no waiting on email threads or missed messages. Whether it’s resolving an urgent customer query or aligning on a project milestone, decisions can be made faster, and work keeps moving. 

5. Simple, seamless integration 

One of the biggest concerns around new systems is how smoothly they’ll fit into daily operations. As part of the wider Microsoft 365 environment, Teams phone blends naturally into the tools businesses already use.  

That means your customers can take calls, join meetings, and share documents, all from one place. It’s easy for users to navigate, and even easier for IT teams to manage. 

Get more from Teams Phone with SIPPIO 

While Teams Phone licences open the door to incredible VoIP functionality, you still need to deploy an underlying call plan as part of your customers’ phone system. SIPPIO offers comprehensive plans that can be easily scaled to meet demand. 

Experts in Teams Phone deployments, SIPPIO provides partners with a dedicated portal to manage end customer licence estates, alongside 24/7 support to assist with initial setup, crucial activation actions such as number assignment, and ongoing optimisation. 

Built on Microsoft Azure, SIPPIO offers a reliable global voice service with incredible uptime and availability, as well as unmatched agility and control over call routing. 

Let’s talk 

Ready to help your customers modernise their telephony with Microsoft Teams Phone and SIPPIO? Book a meeting with our expert team today, and we can arrange a short demo to show their combined power in action. 

We can also support your customers with a free 30-day Proof of Concept for SIPPIO deployments. 

Get in touch to learn more.