Best SIP Trunk Service Providers UK

As a Leading SIP trunk provider in the UK with over a decade of experience in the industry, Xinix offers an affordable, reliable, and high-quality SIP trunk service.
With the help of SIP trunking, you will be able to operate your on-site IP PBX system from anywhere at any time.

Checkout Xinix SIP Trunk Pricing

shareSIP

Per Channel

UK Mobile 5p Landline 1p

£3

per month/+vat

share4000

3000 UK landline minutes
1000 UK mobile minutes
Call Quality Guaranteed

£8

per month/+vat

Pay as you Go

Unlimited concurrency
Only pay for minutes used
Outbound calls from 0.01p/minute
Inbound calls from 0.005p/minute
Call recording 0.005p per minute

FREE

per month

SIP Trunk Call Manager

SIP trunk integration with the call manager system offers a compelling solution for businesses seeking flexible, reliable, and affordable communication setups. Businesses can better adapt to the evolving dynamics of the modern business landscape by integrating SIP trunk call manager.

Here is how it works:
A call manager or unified communication manager is like a central hub that manages and controls the SIP trunking infrastructure. It manages call features, user configuration, call forwarding, call routing, and similar functionalities. For instance, a SIP trunk call manager directs incoming calls to the desired destination based on predetermined rules and configuration. This enables efficient call handling when there is a huge influx of incoming calls and also prevents call congestion. Similarly, administrators can handle user management tasks and can easily configure call features through the call manager’s user-friendly interface. SIP trunk call manager seamlessly integrates with other business tools and communication systems. This enables a unified communication experience.

Apart from the numerous benefits of SIP trunking and call manager integration, there are essential factors to consider. For instance, users need to ensure network reliability, adequate bandwidth, and compatibility as per the specifications of the SIP trunking provider.

What are SIP trunks?

Session initiation protocol (SIP) is a communication protocol of VoIP technology. This enables initiation, maintenance, modification, and termination of real-time sessions. In addition, it allows the transmission of multimedia along with voice communication. This is the technology that enables a virtual connection between an organization’s private branch exchange (PBX) and public switched telephone network (PSTN) via the internet. SIP is essentially the replacement of primary rate interfaces (PRIs) or dedicated phone lines as with the traditional phone system.

The term “SIP trunk” refers to a dedicated physical line that establishes a connection. this originates from circuit-switched telecommunications and serves a similar task as a circuit-switched predecessor. However, the key difference here is that the connection is virtual as it is established over the internet. Simply put, SIP trunks eliminate the need for dedicated phone lines. Typically used for voice communication, SIP trunks can transmit multimedia and other real-time communication services.

What is SIP trunking?

SIP trunking enables the user to connect multiple channels to the private branch exchange (PBX) system. Therefore, it enables the instant provision of global voice connectivity via VoIP communication system.

Organizations can extend VoIP infrastructure with SIP trunking and bypass the need for an IP-PSTN gateway. This is possible because of the simultaneous transmission of many signals to connect nodes in a communications system.

SIP trunking streamlines business operations. It makes use of modern PBX, eliminates VoIP gateways, and can integrate with other tools. This is how SIP trunking ensures optimal call quality and ensures streamlined business operations. SIP trunking call manager provides the user with an online admin portal making management quick and easier.

Call for a free consultation with our phone system specialist.

03333 055 888
Anytime between 9:00AM - 5:30PM
Monday to Friday

...or send us your contact details and a specialist will get in touch.

Awards and Feedbacks

Xinix Awards Xinix Reviews

Popular Destinations

Tariffs are indicated in £/min

Australia	2.5p
Canada	1p
Denmark	1.3p
Germany	1.3p
India	2.5p

Hong Kong	2.6p
Luxembourg	2.5p
Netherlands	1.9p
Pakistan	7.2p
Poland	1.2p

Singapore	1.3p
Spain	1.3p
Switzerland	2.6p
United Kingdom	1p
USA	1p

Country

Type	Code	Rate

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Product options

International Numbers

From £5 _/month
/+ vat

UK Numbers

From £2 _/month
/+ vat

CRM Integrations

From £8 _/month
/+ vat

Number Porting

From £20 _{one off}
/+ vat

Don't just take our word for how good we are

Umar Ahmed

We looked at several other VOIP solutions and Xinix always came out on top.

Very easy process to get signed up! Faultless call quality, array of call features and value for money calling bundle.

Michael Hughes

Second-to-none level of support - always answering the phone, and explained solutions in a no-nonsense fashion. So far the best solution we have encountered!

Jenifer Gibson

Operating the business from home and also being the only staff things can get challenging especially when I have to leave the office un-attended. Xinix resolved this issue with their softphone app, so now my customers can reach me on my mobile app at no further costs

Charles Buckley

We increased our outbound calling records by more than double through their click to dial feature. Technical issues are resolved swiftly, can’t be happier.

Shamim Ahmed

We were having issues with BT and integration with our online cab management system. Thanks to Xinix technical expertise these were quickly resolved. I have been with them for four years and have been recommending them since.

Mike Coker

We have made many changes to our PBX system, adding users, changing our dial plans and voicemails. We have always found Xinix Support to be efficient and eager to deal with all our changes.

Kevin Dyer

Due to our expansion we have had to move offices a few times, luckily being on cloud meant we are not restricted to the BT exchange and have always managed to take our number with us. Xinix ensured there is no downtime, I am very impressed with their project management skills.

Nicholas Cheshire

I was apprehensive about using a VoIP system, I called Xinix and found the gentleman amazingly refreshing! He explained everything from start to finish and help me to set up the whole system to get my business working. The tech guys are also fantastic.

Usman Ahmed

We operate from multiple offices, when customers were calling in, it was often a problem transferring calls between the offices. Xinix VoIP system resolved this by bringing in all the handset under one cloud solution. This made transferring calls seamless.

Zairab Zabeer

We have been using Xinix PBX systems for 4 years. Growing from 2 partners to now over 34. We run a multiple office operations, transferring calls between sites as well as having the one receptionist managing all our incoming calls. Our Account Managers regularly travelling from London, a rare service in this industry. Highly recommended.

Liz Ejemole

We really don’t understand IT or VoIP, but our Account Manager is very patient and has resolved many issues often not related to Xinix PBX. Nonetheless he has always supported us, God bless!

Chris Clancey

I knew very little about Xinix apart from their website, but from my calculations of looking at our current bills etc, I saw that they were definitely one of the cheapest I could find. We picked the best product for our needs and ended up saving ourselves anywhere between £70-100/month.

Benefits of SIP Trunking and Call Management

Cost Saving

Thanks to multi-modal communication capability, SIP trunking enables you to save more than 30% on your monthly telecommunications costs.

Trunk aggregation

By centralising and eliminating redundant connections, you are able to use idle connections in one location for calls at another, thereby offering increased flexibility over traditional PRI circuits.

Flexibility

Depending on the needs of your organisation, the ability to add or reduce connection capacity is simple, thereby increasing the flexibility of the service you provide.

Simplified billing

By aggregating all the voice and data services into one product, you can take advantage of reduced administration with simplified billing.

Quality

By keeping communications data on pure IP connections as opposed to T1 PRI connections, SIP trunking offers improved voice and video quality, delivering almost HD-like audio.

Answers to popular questions

Can I use my PC or tablet as phone?

Can I have multiple numbers?

Is call recording available?

Are calls between users free?

Can I add features on the go?

It must be expensive?

How quick can this be set up?

What are the benefits of our VoIP?

Are you contracts flexible ?

Is your VoIP PBX Cloud based or on premise?

How would you rate your service?

Do you manage our PBX system?

Is it like using a regular phone?

Do you have softphone apps?

What is SIP Trunks?
Why Xinix SIP trunks?

Business SIP trunking

Business SIP trunking is a service that enables your company to operate a selection of telecommunications systems over your IP network. From cheaper international call costs to improved business flexibility, the benefits you get with Sip Trunks is endless. Incorporating a Disaster Recovery strategy to give access to an increased quantity of numbers, Business SIP trunking from Xinix can enhance the way your business stays connected.

Our business SIP trunks represent the latest in telecommunications technology. They are a more affordable alternative to ISDN30 line rental and internet services. While retaining a level of performance that is high in flexibility, it can be tailored to your own specific needs.

Visit our information page on — What is Onsite PBX?

We are a vastly experienced SIP provider in UK. Our knowledgeable engineers have the expertise needed to help you with all your SIP Trunk needs, including any questions you might have in the first instance.

The benefits of Xinix Switch

Control all your inbound calls and outbound call costs
Cheaper alternative to ISDN30e solutions
ISDN replacement – save up to 50% on line rental and up to 60% on calls.
Inclusive calls to 01,02, 03 and all major UK mobile networks
Guaranteed call quality
Retain your existing telephone numbers
Perfect for all Disaster Recovery requirements
Easy management via an app and web portal.

Connecting Dots With the UK’s Leading SIP Trunking Provider

Connectivity is paramount in today’s business landscape. SIP trunking, at its core, is the future of telecommunications. As a leading SIP trunk provider, Xinix is redefining the ways businesses connect, communicate, and collaborate. We believe that a reliable and cost-effective communication system is not just a luxury but a necessity for businesses to thrive.

Fueled by innovation and guided by a profound understanding of the rapidly evolving business landscape, Xinix is here to bridge the gap. With our cutting-edge technology and state-of-the-art infrastructure, we make sure that every call and connection is clear and uninterrupted. We are bridging the gap across geographies, helping businesses thrive.

As a SIP trunk provider, our commitment extends beyond technology. We provide unparalleled support to our customers. With years of experience, we are empowering businesses to connect globally. No matter if you are a startup or an established enterprise seeking to optimize your communication infrastructure, we are here to make it happen.

Partner with us today and embrace the future of communication. Xinix is helping you connect the dots and stay ahead of the technology curve in today’s dynamic marketplace.

See how it works for your business

A sales advisor will contact you for a personalised, informative demo on the key features and benefits of a cloud phone system.

IP & SIP Phones