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SIP Trunking for UK Business

Take control of your communications by switching your existing telecoms solutions to our Tier-1 network

Save up to £4500 a year on your ISDN lines
9.7 out of 10 based on 897 user ratings for Sip Trunks
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More SME's in the UK are switching to SIP

SIP trunking is the fastest-growing telephony service in the UK and we are one of the UK’s leading SIP trunking providers. We connect your site directly into our network via an IP connection to carry all your voice calls and data. SIP Trunks provide a powerful alternative to ISDN and are compatible with all the leading IP PBX brands in the market, giving you peace of mind that your PBX hardware not only works with our network service but is now future proof.

From £8 per month (Including 2000 local & National Minutes)
Reduce the costs of running calls over ISDN from your PBX system
Reduce your spend with FREE On-Net calls between office sites
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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 in replacement of the ISDN circuit
Within the next 6 years all UK business telephony will be hosted. SIP is the perfect solution to extend the lifespan of your existing PBX system
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

Some of the PBX vendors we work with:

The benefits of switching to SIP trunking

Integrates with your PBX
There are no upgrade or maintenance charges. You only pay a low cost monthly licence fee for the SIP channels and receive a fast and current service
Network Coverage
Run voice and data across a single IP Network with no loss in performance or hardware investment. SIP brings your phone system into the modern age
Save 70% on Line Rental
SIP Trunks cost 70% less than an ISDN30 line and are more reliable so it's no wonder 83% of SME's in the UK are switching to SIP from the traditional ISDN
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
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
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.