A future proof IP telephony solution for every Thame business!

VoIP (Voice over Internet Protocol) refers to telephone calls being made over the internet (IP telephony) rather than via traditional telephone lines. You can either opt for an on-premise / on-site PBX system or a cloud-based telephony solution (known as Hosted VoIP or Cloud VoIP).

Join the future of telecoms… BT is switching off ISDN, are you ready? Our hosted VoIP solution resides in the cloud and provides an extensive range of fixed and mobile telephony capabilities. Your customers will get the best experience when calling your business, with access through an easy to use web portal and giving you flexibility for your business telephone set up and improved call handling. For one fixed cost, have the ability to put calls on hold, play marketing messages and move calls seamlessly between users & offices. Put yourself in full control with an extensive range of call handling and management features, all available remotely. Get future-proof with STEM!

Highly effective for both small and larger companies in Thame

Our next-generation Hosted VOIP communications solutions can really benefit your businesses, it is suitable for small businesses and also highly effective for larger companies that have multiple sites or employees working from more than one location – Making it an ideal replacement for ISDN.
Hosted VOIP enables your business to work more efficiently, with flexibility for home working and anywhere in the world, with a free mobile application it’s a great solution for on the road employees including logistic companies, key workers and sales people.

Our telephone system offering is powered by one of the largest carriers in the UK. Empower your business with the latest Unified Communications (UC) features delivered by our next generation IP Voice service (VOIP). We are one of few that also integrate with your mobile to give you a true Unified Communications experience, providing you a collaborative way of working.

Reduce your business telephony costs in Thame

Reduce your business telephony costs by only paying for the seats you need and free site-to-site calls, cheaper call rates and all-inclusive minute packages, make for overall lower spending.

Your whole telephone system is managed & maintained by STEM Technologies all included in your fixed monthly rental, so you don’t have to dedicate in-house staff, time and money to keeping an on-premises system up and running. Your company will experience more uptime because the cloud-based PBX system doesn’t have to be taken offline for maintenance, updating, or repairs.

This solution gives you a strong disaster recovery plan, because with a cloud-based telephone system, even if disaster strikes or if the unthinkable happens, users can continue to handle business telephone calls – giving your business continuity. STEM Technologies cloud-based telephone system can solve these types of problem as your infrastructure is protected in a hosted environment. As such, your flow of communications can continue even in an emergency.
Call us today on 01296 360170 to discuss your telephone system requirements – to stay connected and start saving on your telecoms.

Business Broadband / Connectivity

Business Broadband Simplified

Choosing a business broadband solution depends on a number of factors, such as the number of users and what the service is being used for.  Businesses both small and large can compete on a more level playing field based on having the most efficient broadband for their business activity and needs.  STEM broadband is connected to all the major carriers in the UK, giving you superior connectivity, reliable speeds and value for money – all underpinned by our Buckinghamshire based support team. With the growing demand for cloud-based services of which STEM Technologies provide to business too, a company’s link to the internet has become crucial to the business success.

Broadband Packages To Suit Your Business

1. If you are looking for an entry-level solution at low cost, then our standard broadband package will ensure you can manage emails, browse the internet and download files.

2. If super fast broadband is important to your business, then Fibre to the Cabinet (FTTC) serves as an affordable option to give you more impressive upload/download speeds (80Mbps and 20Mbps respectively).

3. If your business uses cloud-based applications, has a large or growing team or operates from more than one site, a Direct Internet Access Leaseline solution will be more appropriate to meet your requirements.

Visitors to your business often count on having access to the internet, providing a secure and reliable WIFI connection will boost your credibility and enhance your guests experience.  Offering high quality connectivity will improve productivity and morale for your guests and employees.  The result of treating your visitors to top quality experience, is extended stays and increased use of your facilities which is all good for your business.

Having business grade broadband from STEM supports how you do business most efficiently. STEM’s solutions offers a more reliable, robust & faster internet to enhance your overall business performance.


standard package


Cloud Based

Business Mobile

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Stay Connected

Keeping your business mobile while out and about or outside of traditional working hours.  Our Mobile offering enables your employees to stay connected while working remotely, giving flexibility and ensuring important calls are not missed, and therefore boosting your productivity.  Another major benefit of issuing mobiles to your employees is improved communications, by providing instant, remote access to email, internet, synchronised calendars and company networks, again all boosting business levels.

STEM will support you to understand the latest business mobile phone offers and options available, ensuring you get the best solution to suit your business requirements and budget.  We are able to provide everything you need for your business to stay connected and have control, whether you are looking for a SIM only package or a business mobile phone deal with handsets.

Boost your business mobile contracts!

We also provide additional bolt on packages, we can support you with creating a bespoke offer to boost your business mobile contracts.  If you need International Calls, Data Roaming, or any other additional bolt on’s, we are happy to help.  Working with all major network providers – EE, Vodafone, O2 and Three – allows us to support you with the most cost effective solutions for your business.

The issue of mobile phones can provide your business with a competitive edge, allowing faster and more collaborative communications enables your company to make faster decisions.  Work with STEM on your mobile proposition today, we offer a brilliant way of saving your business money with attention to detail on your requirements, all underpinned by our Buckinghamshire-based service, contact our experts today.

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We Provide Home Burglar Alarms In Thame & Surrounding Areas:

Our Happy Customers

Commercial Intruder Alarm & CCTV Install

We would just like to say a massive thank you to Matt, Tamara and the team for all of their hard work. From first point to installation, Stem were amazing. We had 3 companies out to estimate for us, with Stem being one. Stem went above and beyond to advise and even go through the other quotes to ensure they were being equally competitive. They have even gone as far as seeing our managing director next week to go through the whole system and take the full advantage of the new technology. Thank you to everyone at Stem and we look forward to working with you in the future.
Beehire Car and Van Rentals Limited
in Leighton Buzzard (February 2020)
Business Telecoms Install

I can't praise the team at Stem Technologies enough for their great support over the years, always going that extra distance with their ongoing support on our whole telecoms system and with all of our virtual numbers.
Chris Hendren
Nettl of Aylesbury