Bring Your Business Communications into the Digital Age

A SIP (Session Initiation Protocol) trunk is a virtual version of an analogue phone line and supports limitless channels to your PBX, allowing you to make local, long distance and international calls over the internet.

Elite’s SIP Trunking service delivers true business communication to support your IP telephony system. Whether you are new to SIP trunking or have experience with the service, our trained business support teams can help you throughout your journey.

A Feature-Rich Service with Simple Billing

We know you need to keep track of costs, so we have built great value call bundles to ensure you know how much you will spend each month, while bespoke solutions, dedicated account management, 24/7 UK support and enterprise-class SLAs come as standard.

Let’s work together to future-proof your communications with top-class SIP trunk solutions with unbeatable support from Elite.

Key Features

Equip Your business with a scalable, resilient, internet-based telephony service that prepares your business for the digital age.

Scalable and Resilient

Easily scale to adapt to current business needs and re-route calls to alternative destination with built-in SIP trunking disaster recovery and business continuity.

Advanced Call Control

Advanced call routing through SIP trunk Call Manager offers enterprise-grade call routing, more business continuity options and the ability to manage your number estate, including all aspects of your calls.

Business Continuity

By combining your SIP trunk with our Inbound Services you still always be contactable. Set automated call plans or simply divert published inbound numbers to backup locations or mobile devices – instantly and from any device.

Fraud Protection

By default, fraud detection is enabled for all SIP trunk services, providing rapid response and notifications for any fraud attempt.

Significant Cost Reductions

Slash your monthly overheads by eliminating expensive ISDN line rentals. SIP Trunks are significantly more cost-effective, offering lower per-channel costs.

Geographic Number Flexibility

SIP Trunking allows you to utilise any area code regardless of your physical location, letting you break free from local exchange boundaries.

Business Benefits

Lower Costs

As calls are carried over the internet (with the ability to divert to the PSTN), SIP trunking provides cheaper national and international calls.

Telephony Consolidation

For businesses with multiple locations, our SIP trunk services not only provide you with the opportunity to review your existing telephony, but allow you to reduce the number of high-maintenance IP PBXs.

Limitless Scalability

Add and remove channels/numbers easily with Elite’s call management system. Geographically independent and limitlessly scalable, SIP trunking supports fast growth businesses.

Rapid Deployment

Connecting new geographic locations with a new simple setup enables you to get your new SIP trunk operating at full capacity, quickly.

Increased Efficiency

Combine voice, fax and data into a single, combined solution and make your communications portfolio easier to manage, operate and upgrade.

Elite Green Certified Partners

As part of our aim to be a sustainable company, we are committed to partnering with brands whose business practices align with this aim. Gamma is a fully certified Carbon Neutral company who purchase 100% renewable energy to power its business in the UK. They continuously measure their carbon footprint and reduce their emissions through investment in a variety of green initiatives. Voiceflex have reduced their CO2 emissions by at least 10% and have received gold recognition from business sustainability rating provider, EcoVadis. Partnering with Gamma and Voiceflex contributes to our ability to operate in a more sustainable way.

Your Experience is Our Priority

Recognition and rewards

Customer Ratings

93%

Of customers rated our service as either good or excellent.

Recognition and rewards

Customer Satisfaction

95%

Above the industry average CSAT Score.

Recognition and rewards

Response Time

5 mins

You can rely on a quick answer to your support request.

Customer Reviews

“The Elite team is very professional. If you go to them with an issue, the team looks around the problem, works out what the business needs and comes up with the right solution at the best price. That’s why I go back to them; I trust their judgement.”

Daniel Frear | Head of IT, Alfa Travel

Read Case Study

“When we looked at our existing suppliers, side-by-side, Elite Group stood out as the provider who looked after our needs the best. Elite Group were always available to speak with when we contacted them, ready to offer advice, and we had access to a dedicated account manager who ensured our needs were always being met. It made sense that we would look to shift all communications to them.”

Resources & Communication Co-Ordinator

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“Due to my technology background, I immediately knew that our existing telephony system was not fit for purpose, especially during the stresses of the current pandemic. It was a high priority to support our staff and our customers with the demands of the new way of working. We needed a system that we could use onsite, on the go and from home, which we could manage ourselves, but still have support on hand.”

Vanessa Worsley | Director of Finance, Urban Bliss

Urban BlissRead Case Study

“We currently deal direct with EE and O2, as well as Elite, but we were keen to work with just one supplier to simplify things. Out of the companies we currently deal with, it made sense to make Elite our preferred supplier, because with them we get one dedicated account manager who will always get back to use about our queries very quickly. It also means we will be able to view all of our bills online in one place, making it much simpler to keep track of our spending.”

Tony Barnes | Director of GMA Warehousing

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One of the main reasons I recommend Elite Group is their commitment to delivering world-class customer experiences and innovative digital transformation solutions. Their team truly takes the time to understand our unique needs and provides tailored solutions that drive innovation and excellence.”

Hayley Scaratt | Finance & IT Director, Archwood Ltd

Archwood LtdRead Case Study

“I would absolutely recommend Elite Group. Their customer response time is very good. When I’m on tour, it’s 24/7, there’s no 9 to 5 – it’s around the clock work. So, when we need something doing, let’s say on a Saturday or Sunday and I call or email Elite Group, they’ll answer and will find a solution for me, which is invaluable.”

James Masterson | Product Development Director, Golden Eagle Luxury Trains

Golden Eagle Luxury TrainsRead Case Study


“Elite are good people to deal with. They genuinely try to keep customers happy. They are professional, responsive, and easy to deal with”.

Seamus McCarvill | Head of IT, Irish Continental Group

Irish Continental GroupRead Case Study

“Elite’s development of a custom reporting suite and their proactive technical expertise has been game-changing. Their tailored solutions and problem-solving approach give us confidence in the growth of our telesales business.”

Kirsty Murray | Operations Manager, The Bradford Exchange

The Bradford ExchangeRead Case Study

“Over the past two years, our partnership with Elite to manage our mobile network has been instrumental in enhancing our connectivity and in reducing our operational costs. Their brilliant approach to providing support and managing our account has provided real benefit to GAMA Healthcare in terms of cost savings and improved service.”

Andy Tierling | Technology Director, GAMA Healthcare

GAMA HealthcareRead Case Study

“After seven other migrations throughout my career, this has been by far the best delivery of solution I have experienced.”

Jayne Henry | Director of Customer Experience, RM Education Ltd

RM EducationRead Case Study

“I would recommend Elite for their customer service, approachability, and speed of delivery, as well as their project management.”

Anne Cassidy | Finance Assistant, Golden Eagle Luxury Trains

Golden Eagle Luxury TrainsRead Case Study

Get in Touch Today

Want to learn more about how SIP Trunks can change your business for the better? Elite Group is here for you. Fill out your details and a member of the team will be back in touch with you shortly.

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    Frequently Asked Questions

    How Scalable is SIP?

    SIP Endpoints support connections ranging from two channels for small PBX-equipped businesses to an unlimited number of channels for large enterprises and contact centres. You can also add or remove additional lines at any time.

    What are the benefits of SIP trunks over ISDN?

    SIP trunking is less costly per channel and more flexible in how and where geographic telephone numbers can be used. It’s also quicker to install and provision and – as standard – it delivers extremely robust business continuity. ISDN is also being decommissioned and will be end of life in the UK, as part of the PSTN shutdown project by January 2027.

    How popular is SIP trunking?

    SIP trunking has moved from being a “trusted alternative” to the definitive standard for UK business communications. With the nationwide switch-off of the PSTN and ISDN networks now nearly complete, SIP trunks (alongside hosted VoIP) have become the primary migration path for hundreds of thousands of organisations across the country.

    What is the call quality like?

    From the moment we connect your SIP trunking service, you will enjoy all the reliability, resilience and quality that comes from working with the UK’s leading SIP carriers. We proactively monitor and manage Quality of Service across the entire network as it’s this that makes the real different to SIP trunk call quality.

    Can SIP trunking protect your business in an emergency?

    SIP trunks can handle emergencies easily. They are inherently disaster/recovery/business continuity ready, allowing you to re-route calls to an alternative location quickly and easily.

    How do SIP solutions work if I want to move office?

    Number flexibility with Business SIP trunks you can keep your existing number, even when moving out of the area. This saves you costs on printed company literature and stationery, while maintaining the perception that you still have a presence in the area you have moved from.

    How does SIP Trunking relate to Microsoft Teams?

    Microsoft Teams is the go-to tool for countless businesses seeking streamlined internal comms, but it needs a “bridge” to connect to actual phones, so you can call mobiles and landlines. Direct Routing is that bridge. It uses SIP Trunking to link your Teams app directly to the global telephone network, consolidating your communications while also saving you money compared to some of Microsoft’s own preset calling plans.

    What do you need to make SIP Trunking work?

    To make SIP Trunking work effectively, you need the most stable and reliable internet connectivity possible. While each active call only requires about 100 Kbps of bandwidth, that connection must be consistent and prioritised over other web traffic using Quality of Service (QoS) settings to prevent audio “jitter” or dropped calls. For the best results in 2026, a business-grade Leased Line or Dedicated Internet Access (DIA) is recommended – we can help with this. Speak with an Elite Group expert today.

    Can we keep our existing business phone number when moving to SIP Trunks?

    Absolutely – you can do this through number porting. This is the digital transfer of your existing business numbers from a legacy provider to your new IP-based platform. Once you provide a Letter of Authority (LOA), your new provider coordinates a “port date” with your current carrier (usually within 7 to 14 days). On that scheduled day, call routing shifts from the old copper network to your SIP connection with minimal downtime, ensuring your customers can still reach you on the same familiar numbers without any interruption to your operations.

    When should we move to SIP Trunking?

    Ideally, as soon as possible. When the PSTN switch-off arrives in January 2027, you’ll lose connection to your customers instantly if your phones are still reliant on the old lines. By moving to SIP Trunks sooner rather than later, you’re not only preparing for the inevitable, but you’re also beating the last-minute rush when countless businesses will be scrambling to onboard such services.

    Resources

    Explore Elite Group's latest industry updates, insights, and practical guidance, designed to help your business make better technology decisions.