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Cambridge based IT and VoIP systems integrator, providing high quality service, support and innovative cloud technology solutions.

3CX Telephone Systems

We've been installing, maintaining and upgrading telephone systems since 2001.  We were one of the first installers to roll out VoIP technology to small business (2006) and in 2016 we launched our own SIP trunk services.  In 2018 we became Platinum 3CX partners.  We manage, support and enable 3CX systems across the UK from our base in Cambridge. 

We can support both onsite and remotely systems ranging from 4 extensions up to 2000. 

Our experience of the converged telecommunications and IT market place is second to none.  We're are exceptionally good at providing high functionality, low cost telephone systems, beating the incumbents in all areas.

You can download 3CX by clicking here.


Telephone System Installations for 3 to 300 handsets


3CX VoIP Telephone System PLATINUM Partner - hosted and on-premise



No Long Term, Automatic Renewing Telephone Call Contracts


Existing 3CX System Users

SIP Trunk Services

We've been helping businesses navigate their way through the minefields of telephone lines since 2001.  In 2006 we started installing hosted VoIP telephone systems.  In 2016 we launched our own SIP Trunk Service.

Enterprise IP telephony

We provide high quality, high volume inbound and outbound VoIP services to our customers. Our geographically resilient network has significant TDM interconnects with national and international Tier 1 and Tier 2, resulting in a competitive low cost-per-minute service offering.

Our SIP trunking platform

We provide a carrier grade SIP trunking service hosted on our IP Voice network. The TDM backbone circuit spans several UK sites and is based upon a multi-site resilient architecture using TELES core switching nodes, supported on a multi-vendor (Cisco, Juniper, Brocade) routing and IP switching fabric.

  • Resilient Connections into 14 BT exchanges for inbound voice
  • Multi carrier access for outbound traffic
  • Failover routing, supported by our layer 2 IP network
  • Enterprise class IDS monitoring (intrusion detection)
  • Over 600,000 parameters monitored per day to ensure smooth systems operation

SIP Trunk Services

VoIP Phone systems need a way of connecting to the PSTN (or public services telephone network) so that they can be used to communicate with people outside of your organisation.  

We believe in providing an ethical service so there aren't any catches, long term contracts or penalties for exceeding your call bundle.

SIP Trunk Advantages

  • Eliminate costs associated with traditional line rental (ISDN2, ISDN30 etc)
  • Customer focused pricing model
  • No Long Term Contract
  • Easy Integration with existing phone systems (gateway may be required)
  • Future proofing technology

Typical Pricing

A single SIP Trunk is £6.35 + VAT per month.  This includes 4000 UK Landline and UK Mobile Minutes per month.


PSTN Telephone Line Services

BT openreach recently announced that the ISDN30 service, used by so many businesses, is due to be retired by the end of 2025.  The replacement to the ISDN30 service will be SIP Trunks.  These are similar to ISDN but the call is routed over your business Internet connection.  At DataConnectivity we believe, that in some instances, there is still a very strong business case for using ISDN30 including scenarios where call quality and reliability requirements are paramount.  

ISDN30 Services

ISDN30 doesn't have to be expensive.  We can leverage our access into the BT Openreach network to seemlessly transfer the billing of your existing ISDN30 services to our platform.  This achieves significant cost savings and gives you an agile approach to scaling your line capacity up and down to suit the needs of you business.  

Typical pricing starts from £12.50 per channel per month.  Compare this to what you're paying now.


PSTN Lines - Analogues Lines

The PSTN Analogue Line is still the backbone of most business broadband connections and can also provide connectivity for your fax machine and alarm systems. It's easy to find yourself overpaying for this service and perhaps even easier to find yourself locked into a long term contract costing you more than 50% than it should.

Typical pricing starts at £10 per month per line.


Least Cost Routing Services

Some businesses find themselves locked into long term line rental contracts at expensive call rates or have committed spends.  We've been very successful at helping to negotiate our clients out of these long term contracts and / or minimum call spends.  We've then been able to switch them onto a least cost routing plan, slashing their phone bills considerably.

Typical all inclusive call bundles start at £7.50 per month per line / channel. 

SMS Services

We're an AQL services partner and can provide low cost SMS text message credits to use with your existing AQL account.

SMS integration with your internal ERP systems can help convey information quickly and accurately to stakeholders.  We've helped roll out this technology across many vertical markets including Agriculture, Haulage, Financial and Engineering.

For tailored pricing for SMS Credits, based on quantity, please contact us.