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SIP Trunking for UK Business

Reduce the cost of inbound and outbound calls using flexible and resilient SIP Trunks - FREE office to office calls

Save £1000's by switching to high-definition SIP Trunks
We have over 1000 5 star reviews on trustpilot
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More SME's in the UK are switching to SIP

SIP trunking is a form of telephony that connects your premises directly to the Public Telephone Network (PSTN) via the internet. SIP Trunks are compatible with all the leading PBX brands on the market, meaning that your PBX hardware can up upgraded to work over our network service, but is now scalable and future proof.

It is the fastest-growing telephony service in the UK and we are one of the UK’s leading providers of SIP Trunks. We connect your site directly into our network via an IP connection to carry all your voice calls and data.

From £9.50 per month (Including 2000 local & National Minutes)
Great call quality and business-grade resilience
Reduce your spend with FREE calls between office sites
Do you require more information?
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Why Consider SIP for your Business?

We have helped our customers to save an average £4,770 per annum by upgrading their PBX with SIP Trunks and increasing control over their Telecoms
By 2025, all UK business telephony will be hosted. SIP Trunks are the perfect solution to extend the lifespan of your existing PBX system and move to VoIP
Our specialist team are on hand at the point of installation and assist with the ongoing configuration. Our aim is to make SIP easy and hassle free
SIP Trunks are the perfect solution to extend the lifespan of your existing PBX system

Some of the PBX vendors we work with:

The benefits of switching to SIP Trunks

SIP Trunks provide all the benefits of cutting-edge VoIP technology
Integrates with your PBX
SIP Trunks provide all the benefits of cutting-edge VoIP technology, without the need to replace the system you’ve already invested in
With SIP Trunks it is incredibly easy to move or divert fixed lines anywhere with your PBX
Network Coverage
With SIP Trunks it is incredibly easy to move or divert fixed lines anywhere, regardless of location, without any expensive call forwarding costs
Save on average £4,770 per year and have increased control over your Telecoms
Save 70% on Line Rental
Save on average £4,770 per year and have increased control over your Telecoms. Plus, our system is easy to use, flexible and upgradable at any time
Expand your business in to VoIP without boundaries
Ultimately Scaleable
Expand your business without boundaries. Add and remove users in a few clicks saving time and money - all in the comfort our your existing PBX system
SIP Trunks offers instant savings and is helping to fuel a full move to VoIP
The Best Deals in the UK
Call charges over SIP are often 30% cheaper when compared with traditional ISDN lines. The instant saving is helping to fuel a full move to VoIP
Remove the cost of calls on your PBX between departments with FREE on-net calls using a SIP Trunks
Free Calls Between Offices
Remove the cost of calls between departments with FREE on-net calls using a SIP connection. Your staff internal calls can often take 20% to 30% off your bill

Sip Trunks. Questions and Answers

What is SIP Trunking?

Session Initiation Protocol (SIP) trunking is a service that uses the protocol to provision voice over IP (VoIP) connectivity between an on-premises phone system and the public switched telephone network (PSTN). SIP trunks offer a more flexible and lower cost alternative to ISDN for inbound and outbound voice calls.

How resilient is SIP trunking?

SIP trunks are a service utilised by thousands of UK organisations, which is testimony to the reliability of SIP. For added reassurance when switching to us, SIP trunking can even be used with existing ISDN connections to ensure the transition goes smoothly.

The benefits of SIP Trunks
  • Save money on call costs and line rental

    SIP offers a more reliable, cost-effective connectivity than ISDN over an IP connection. Save up to 25% or more on call costs and 50% on line rentals.
  • Free internal calls and great features

    Perfect for any business with multiple sites, not only saving on your line rental and call costs, but offering free internal calls within your company; along with a host of great features.
  • Scale up and down when you want

    SIP trunks are ideal if you are moving, downsizing or upsizing and want to keep existing phone numbers. Scale up during busy periods and down again afterwards. You can add lines, take them away, split calls at any time. You are in control.

  • Built-in Business Continuity

    SIP trunks can handle emergencies easily and are ideal for disaster recovery / a business continuity plan. Re-route calls to an alternative location quickly and easily.