Dark Fibre

Partners with their own network equipment and expertise can use unlit strands of optical fibre (Dark Fibre) to connect two sites or consume ‘local access’ equivalent Dark Fibre connections without the expense of unbundling exchanges.

With Dark Fibre you can:

  • Build a fully protected resilient ring connected to your head end
  • Serve multiple customers with different network architectures
  • Daisy chain P2P circuits within a resilient core
  • Light office blocks or business parks using splitters or multiple fibres
  • Extend coverage, target new business or deliver specific projects e.g. PSNs, mobile networks, WANs, etc.
  • Migrate legacy services to improve long-term profits or reduce customer prices
  • Strengthen bids through supplier diversity, true resilience and long-term cost certainty

At a glance

Dark Fibre

  • Dedicated resilient Full Fibre connectivity
  • Comprehensive 100% SLA
  • 5 business hour return to service guarantee for metro dark fibre
  • 24/7 UK based maintenance and technical support
  • Growing availability in UK locations
  • Can run up to 40Km in length

Why choose CityFibre as your Dark Fibre supplier?

Only the best

We’re committed to using our commercial flexibility to ensure the very best Dark Fibre market prices wherever possible.

We're in all the right places

Our revolutionary CityFibre network means we can offer you the most cost effective solution - full fibre networks in cities across the UK, with more being added all the time.

We've got clout with the carrier

We are the carrier and therefore use our own infrastructure to provide our Dark Fibre services and ensure your service is delivered efficiently.

We give you complete peace of mind

Our Dark Fibre services are fully supported with 100% Service Level Agreements and a 5 business hour return to service guarantee. You also have access to our 24/7/365 UK technical service team.

Dark Fibre FAQs

  • G657.A1 fibre type is used for new deployments, with increased flexibility for installation in tight corners of buildings. However, there is still G.652 fibre in some locations – we cannot predict or agree which will be provided. There is no option to specify fibre types at the point of order as we use whatever is deployed within the network for any given route.

  • Fibre Tax is the non-domestic business rates applicable to the use of services delivered over fibre. Fibre Tax is defined by the Government’s Valuations Office Agency (VOA) or the Scottish Assessors Association (SAA) – who produce the tax assessment for their respective geographies – but billed by local authorities in the same way as business rates for commercial property such as shops, offices etc. From April 2022, CityFibre’s Dark Fibre has a charge of £51.20 per annum, per connection - irrespective of distance (except in Scotland).

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