Unified Communications

Streamlining operations across locations with Trustack

Prepare for the 2027 PSTN/ISDN Switch Off

BT’s 2027 switch-off of PSTN and ISDN services marks a crucial shift in telecommunications. As part of BT’s digital voice changeover plan requires all to have an internet connection. Trustack is here to guide you through this transition with urgency and clarity.


BT’s original projected switch-off date (2025) has been extended, with the aim to complete the move by the end of January 2027. The extension is no reason to delay as migrating from analogue to digital as quickly and effectively as possible is important.

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Why switch & how it affects you:

  • Outdated Infrastructure: PSTN networks are outdated and costly to maintain, prompting the need for a transition to digital alternatives.
  • Alignment with Technology: Embracing digital solutions aligns with evolving technology trends and ensures future-proof communication systems.


What are the benefits of switching?

  • Cost Reduction: Digital alternatives offer reduced costs compared to traditional phone lines.
  • Enhanced Mobility: Enjoy greater flexibility with a variety of devices and locations for communication.
  • Scalability: Easily scale your communication systems to meet changing business needs.
  • Advanced Features: Access new features and capabilities for improved efficiency and productivity.
Take Action & Plan Ahead – Start planning your migration now to avoid disruptions and take advantage of cost savings and modern features. Trustack expert team is here to support and guide you every step of the way.

The switch-off deadline is approaching fast – don’t delay, act today to secure your business’s communication future.

Stay in touch with Trustack

In today’s fast-paced business landscape, the ability to communicate and collaborate seamlessly across multiple locations is not just a luxury but a necessity.


Unified Communications (UC) is the solution empowering businesses to do just that. Whether you have one location or multiple sites, UC offers the tools to keep your teams connected and ensure smooth operations.

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What is Unified communications?

Unified Communications, often referred to as UC, is a comprehensive system that integrates various communication tools and channels into a single platform.

The goal is to create a cohesive environment where employees can communicate and collaborate regardless of their physical location.

What is hosted Telephony?

Hosted telephony is when your phone system is located in the cloud, rather than on your own premises. It is ideal for both small and large businesses.

The Trustack Hosted Telephony Platform is a feature rich, cloud hosted, flexible and scalable VoIP telephony solution. Trustack Hosted Telephony Platform, including detail on the system, feature set, licencing, associated costs including our set up charge and hardware options suited to you. 

Flexible, reliable & efficient hosted telephony licensing options

With TruStack Hosted Telephony, customers can choose a mixture of TSV, TSV+ and TSUC users simultaneously.


Simply pick and mix the licences that best meet the user and organisation requirements and all users/devices are connected to the feature rich management platform. 

Our services

Hosted telephony provides a flexible, reliable and efficient way to manage your communications:

TSV – Trustack Voice


Designed for use with desk phones connected over VoIP technology and using internet connectivity to transmit call data. 

  •  All functions of traditional PBX
  • Package includes voicemail, hunt groups, ring groups, ad-hoc conferencing, IVR and more
  • Includes audio conferencing
  • Optional extras include video conferencing

TSV+ – Trustack Voice +


Suited for users who require a feature rich softphone application for use on desktop and/or mobile devices. 


• Includes all features as Trustack Voice
• Native softclient
• Support for iOS and Android
• Browser-based, supported on MS Windows and Apple Mac
• Presence
• IM
• Shared Corporate Phonebook

TSU – Trustack Unified Communications


For users who require a feature rich system that works seamlessly with Teams and utilises the Teams application as the telephony client with a built-in softphone​. 


  • Includes all features as Trustack Voice and:
  • Full Microsoft Teams integration with calling, conferencing etc.
  • Mobile Client – Microsoft Teams Client for a familiar look and feel
  • Presence
  •  IM

The benefits of hosted telephony

One of the key components of Unified Communications is hosted telephony, a solution where your phone system resides in the cloud rather than on-premises. This approach offers a range of benefits for businesses of all sizes:



Hosted telephony provides the flexibility to scale your communication infrastructure as your business grows. Whether you need to add new users or expand to new locations, the cloud-based nature of hosted telephony makes it easy to adjust.



Cloud-based systems are known for their reliability. With redundant servers and built-in failover mechanisms, hosted telephony ensures that your communications remain uninterrupted, even in the event of a local outage.



Managing your communications becomes more efficient with hosted telephony. Updates and new features can be deployed centrally, eliminating the need for on-site maintenance and reducing IT overhead.



Access your phone system from anywhere with an internet connection. This is particularly valuable for businesses with remote or mobile employees who need to stay connected on the go.

Customised solutions for your business

At Trustack, we understand that every business has unique telephony requirements. Our hosted telephony solution is very flexible, so you can customize it to meet your specific needs. Whether you’re a small startup or a large enterprise, we have the tools and expertise to create a customized UC solution for you.

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A stack of services to keep you at the forefront of technology.

Keep your data safe from unwanted threats and attacks with best-in-class cyber security management.

Plan and migrate relevant infrastructure with hybrid cloud solutions that save time and drive efficiency.

Protect your data with a disaster recovery process to recover your business if the worst does happen.

Get expert advice, design and support your enterprise networking needs from broadband to SD-WAN.

Ensure a robust ‘on-premise’ infrastructure solution keeps your business running smoothly.

Enable your teams to operate better and communicate across single and multi-site locations.

Relationships built on trust, honesty and integrity.


Andrew Furness

Controller - Information Systems, Unipres UK Limited

“Trustack has been a trusted partner of Unipres for 11 years now. The stack of products they’ve worked with us to implement at Unipres has grown from an initial implementation of VMware vSphere to VMware Horizon, Veaam Backup and Replication and Trend Deep Security to name a few. We feel confident that they will implement IT solutions tailored to our business needs and deliver them to the requirements and quality Unipres expect as an organisation.” 

Collingwood Business Solutions

Michael Ward

IT Director, Collingwood Business Solutions Limited

“Trustack are a trusted partner who have worked with us for a number of years. They know our business and have in depth knowledge of our complex infrastructure whether that be security, networking, virtualisation or any other parts that play an integral role in our success as an IT service provider and Insurance distribution business. Trustack have been a major part of Collingwood’s success working with us to enable us to scale accordingly with innovative solutions and robust security”

Muckle LLP

Andrew Black

Director of IT, Muckle LLP

“We rely on Trustack to help us deliver innovative, cost-effective technology. Their extensive technical knowledge and legal industry experience means they always offer us reasoned, pragmatic advice.”
“Trustack always stay one step ahead when it comes to providing the latest products and services.  They understand our business and work proactively with our IT team to ensure we always deliver the best service to the firm and our clients.”

Beyond Housing

Maeve Collier

Director of ICT and Change, Beyond Housing

“The technology is there to support us from zero-day onwards in terms of looking at threats and there’s the whole peace of mind that we’ve got knowing we have eyes on our system 24×7.”
“We’ve seen more people talk about training and have a better awareness about it. The education side is effective and simple. You drink a cup of tea, and you watched your video, it’s so quick.”

Leading North-East Energy Business

Head of IT

“We have been working with Trustack for over a decade. We have experienced in-house support, but there are always cases where you need a subject matter knowledge that goes beyond what you can carry internally – Trustack are able to provide in-depth technical expertise and access to vendor support that ensures we can get answers to the most technical of questions. We source our core server, storage, and network products through them, from vendor selection, design, and implementation through to support. This provides a level of assurance and risk mitigation that we will always have a partner available with the technical skills and knowledge of our environment to deal with issues swiftly”.

K Home

Commercial Director

K Home International

“After working with Trustack for over 10 years, we commenced on a long project with Trustack to bring our IT network and structure up to date and hopefully beyond. So far, each stage has been discussed and planned so that we know what to expect and have been given options at each stage to consider so that there are no surprises and each stage goes to plan. This has meant that any down time has been minimised enabling us to continue operating throughout, all in all very happy with the progress.”