Network Data Cabling & Telephone Systems

All solutions in London and surrounding areas

 Comm-si networks ltd was established in 1999, with over 20 years of experience in data cabling and telecoms solutions.

Suppliers and Installers of Data Cabling

  • Cat 5e, Cat6, Cat6A, Fibre optic single mod and multi mod.
  • Professional Business WiFi installations.
  • Project management and design of your network.
  • Partners with Brand rex, Nexans, Excel, Ultima, Draytek.
  • Qualified experienced engineers.
  • High performance for all your IT infrastructure needs.
  • Independent provider of network data cabling London.
  • Unbiased advice, Competitive prices.
  • Business Telephone Systems, Voip and Sip lines.


20 Long Years Of Data network Cabling Excellence With Quality At It's Best!

When you choose network data cabling from Comm-si networks, you are guaranteed flexible personalised customer service, every step of the way.

Above all we afford the highest customer service. Working within time frame restrictions, while at the same time ensuring the best performance, from your network cabling in London.

All our engineers are fully trained. have ECS cards, asbestos awareness certs and BDS checked. 

In conclusion as an independent provider of data network cabling and telecoms in London. We therefore offer unbiased advice and select the best products, from the world’s leading manufacturers.

Certified Installers for Brand rex, Nexans, Excel, Ultima.

Although based in London, we provide our services to the rest of the UK.
Should you require a new installation of network cabling, additional cables or buisness wifi installations.

Comm-si Networks can provide these for a competitive price.

Business Telephone Systems London

Equally important to our data cabling, we’re able to supply and install a
wide range of telephone systems for small to medium businesses, home workers and hosted voip systems.

Future-proof your communications solutions and create a more flexible working environment.

New and used Telephone systems

Available for up to a hundred unique extensions.
Our years of experience, allows us to quickly and efficiently install and program any
telephone systems.

We can provide on-site training. This gives
your staff the familiarity, they need to operate your new system with confidence.

For more information on any of our, businesses telephone systems, network switches, Wifi and cctv services.

Contact us on 0203 582 5976 and one of our team will be happy to help.