Sirius Voice & Data Ltd is the trusted business communications provider with 20+ years of experience delivering complete turnkey solutions. We specialise in VoIP and cloud phone systems for businesses with 4 to 60 extensions. As your one reliable partner, we offer AI-powered analytics and caring customer service.

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Future-Proof Your Business Before the PSTN Switch-Off

With ISDN and copper lines being phased out, outdated phone systems will soon stop working. Don’t wait until it’s too late to migrate to VoIP and cloud communications now. Sirius Voice & Data simplifies your transition with 20+ years of expertise, ensuring zero disruption whilst reducing costs and unlocking AI-powered analytics for the future.

Innovation That Moves You Forward

Cloud Phone & Business Telephone Systems

20+ Years Helping Businesses Modernise Communications

Sirius Voice & Data Ltd, based in Ipswich, is a trusted business communications provider with over 20+ years of experience helping businesses migrate from legacy PSTN and ISDN systems to future-ready solutions.

With the telecom infrastructure switch-off underway, we specialise in seamless VoIP migration, cloud telephony, fibre connectivity, and structured cabling. We deliver complete communication solutions designed to eliminate risks from retiring copper networks, reduce costs, and keep your business operational through the transition. By understanding how your business works, we provide tailored migration plans, zero-disruption installation, and ongoing support through one reliable partner.

AI-Powered Conversational Intelligence

Experience AI-powered Conversation View on the Dimensions platform. It unifies call recordings, transcripts, sentiment analysis, keywords, and conversation intelligence into one intuitive workspace. Gain faster visibility, deeper insights, and smarter reporting with tools designed to transform customer interactions with flexibility, accuracy, and control.

WHY CHOOSE US

OUR SERVICES

ABOUT US

Sirius Voice & Data Ltd is the trusted business communications provider with 20+ years of experience delivering complete turnkey solutions. We specialise in VoIP and cloud phone systems for businesses with 4 to 60 extensions. As your one reliable partner, we offer AI-powered analytics and caring customer service.

Ready to Future-Proof Before the Switch-Off?

Fill out the form for a free consultation. Our experts assess your current systems, identify PSTN/ISDN vulnerabilities, and show how migrating to VoIP protects your operations whilst unlocking cost savings and AI capabilities. With no obligation, you'll get proven migration advice from 20+ years of success.

20+ Years of Experience
Zero-Disruption Migration
PSTN Switch-Off Specialists
One Trusted Partner

Avoid the PSTN Switch-Off Crisis

ISDN and copper lines are being retired. Without action, your phones will stop working. We migrate you to VoIP before disruption hits, with one trusted partner handling everything.

Future-Proof While Cutting Costs

Legacy infrastructure is obsolete. Modern VoIP and cloud systems eliminate the risks of outdated technology while reducing costs and improving reliability.

Seamless Migration With Zero Downtime

Every business is different. We design your migration around your operations, ensuring zero disruption from legacy systems to modern communications with expert support every step of the way.

Cloud Business Telephone Systems

Replace outdated PSTN and ISDN systems with modern cloud‑based VoIP telephone solutions, designed for the post‑copper era with flexibility, scalability, and lower costs. Tailored to your team size, business goals, and the realities of retiring telecom.

Connectivity Solutions

Future-ready broadband, fibre, and internet services to replace copper-dependent connectivity and keep your business connected beyond the switch-off.

Structured Cabling

Professional data cabling and fibre optic installations to replace outdated copper infrastructure and future-proof your business operations.

Business Lines & Calls

Affordable VoIP line packages with expert PSTN migration support to move away from legacy systems before they're switched off.

Contact Centre Solutions

Upgrade legacy contact centres to modern cloud solutions with call handling, real-time reporting, analytics, and intelligent routing.

Fill Out the Form

Begin by providing us with some basic information through our user-friendly form.

Fill Out the Form

Begin by providing us with some basic information through our user-friendly form.

HOW IT WORKS

Our Simple 3-Step Migration Process

20+ Years Helping Businesses Modernise Communications

Sirius Voice & Data Ltd, based in Ipswich, is a trusted business communications provider with over 20+ years of experience helping businesses migrate from legacy PSTN and ISDN systems to future-ready solutions.

With the telecom infrastructure switch-off underway, we specialise in seamless VoIP migration, cloud telephony, fibre connectivity, and structured cabling. We deliver complete communication solutions designed to eliminate risks from retiring copper networks, reduce costs, and keep your business operational through the transition. By understanding how your business works, we provide tailored migration plans, zero-disruption installation, and ongoing support through one reliable partner.

Future-Proof Your Business Before the PSTN Switch-Off

Free System Review

Our team reviews your current setup, identifies PSTN/ISDN dependencies, and recommends the best migration path before infrastructure retirement affects you.

Free System Review

Our team reviews your current setup, identifies PSTN/ISDN dependencies, and recommends the best migration path before infrastructure retirement affects you.

Seamless Migration

Custom VoIP systems designed around your business with zero-disruption migration from legacy infrastructure and expert support throughout.

Seamless Migration

Custom VoIP systems designed around your business with zero-disruption migration from legacy infrastructure and expert support throughout.

What Our Clients Say

Cool Cats Reviews

The staff were incredibly helpful and informative. The ambience of the space was calm and welcoming and quite pleasant. The eye test took barely any time and the consultation process was educational and relaxed. I’ve not had an eye test in such a long time because it always feels so clinical and overwhelming but this was not that at all. I definitely would recommend them and I’ll be using them going forward.

Excellent experience at Yorkshire Eye Clinic. The staff were amazing—very helpful, friendly, and professional throughout. The pricing was fair and transparent, with no pressure at any stage. I felt well looked after from start to finish and would highly recommend the clinic to anyone considering eye treatment.

I went to Yorkshire Eye Clinic to get the nose pads on my glasses fixed, and I was really pleased with the service. Two members of staff (Maria and Carl) were very kind and helpful, and they fixed it for me free of charge. Great customer service and very friendly people. Highly recommended!

Had a really good experience getting my eyes tested here. The optometrist was very thorough and knowledgeable but also super fast! I was helped to choose a lovely pair of glasses for a very reasonable price by the lovely sales girl so I was extremely happy with the service from start to finish. Would definitely recommend using this independent shop over the big names which are much more expensive and you feel pressured to buy. Thank you all :)

I went in for my first eye test in a few years and the whole experience was really easy. The staff were professional and friendly and provided lots of information to help me understand my prescription, the frames available and how best to look after my eyes. I would certainly recommend this place.

Very helpful service, I came in for a free eye test and was seen to by Sanaan who was very helpful. Then I was shown some frames by Carl and found a nice pair. Overall a great experience

Highly reccomend. All staff were friendly and helpful, not pushy, guided me to the choices that were right for me. Through eye test with patient and understanding optician. Very impressed.

I had my eye test yesterday and had such a great experience. The staff were welcoming, professional, and made me feel completely at ease. Everything was explained clearly and thoroughly. Highly recommend!

I loved the experience. It was a quick one and the staff were all nice, especially Aisha. She walked me through it. She answered all the questions and it was absolutely fun! would come again! Plus, the decor is nice, modern and clean!

TESTIMONIALS

“We’ve worked with Sirius Voice and Data for over 8 years, during which they have delivered a range of telephony services across our practices, GPPC, and local hospital. Throughout this time, the service has been consistently excellent. Sirius takes a collaborative approach, working closely with us to find the best solutions for both office-based and remote working environments. The team is always friendly, highly responsive, and quick to resolve any issues. They are a trusted and reliable partner.”

Laura Cook, Chief Operating Officer, GP Primary Choice Ltd

"We have worked with Sirius for over 15 years and have consistently found them to be an extremely reliable and competitive partner. In the technology space, where costs can escalate rapidly, their pricing has remained transparent and good value, without compromising on service quality.

Their team is always accessible, responding to queries within minutes and providing clear, timely updates throughout projects. We were particularly impressed with the recent migration from copper wire to broadband communications, which was completed to deadline and ahead of anticipated market changes and at a cost well within budget and more competitive than most. The integration with Microsoft Teams and Microsoft 365 was seamless and delivered with minimal disruption.

Given the financial pressures schools operate under, we would strongly recommend Sirius as a trusted and cost-effective provider of telecommunications services. "

Keith Robertson – School Operations Manager Conway Primary School London

Future-Proof Your Business Before the PSTN Switch-Off

Avoid the PSTN Switch-Off Crisis

Future-Proof While Cutting Costs

Seamless Migration With Zero Downtime

Future-Proof Your Business Before the PSTN Switch-Off

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