Dark Fibre
A Dark Fibre network offers your customers truly bespoke connectivity. The fibre is ready and waiting, but unlit, so customers get end to end network control exactly where they want it, and the flexibility and capacity to run any service. Custom connectivity for clients; let’s light it up.

The UK’s fastest business internet provider. Lightning fast delivery, highly competitive pricing.
While other ISPs stick to OnNet Dark Fibre, we customise connections to each customer's needs. Because we have our own in-house Civils and Network Engineering teams, we can deliver Dark Fibre wherever you need it. Dark Fibre provides unlit, unmanaged optical fibre paths between two sites. Customers choose the equipment required to light the fibre and keep end to end network control. We use over 6 million KM of existing fibre to plan and deliver network routes across the UK. Each fibre is 100% dedicated to one business’ use, so it’s completely secure. With multiple commercial options available, from annual rental charges to sales type leases, we can work to your margins and business model.
What’s included in our VoIP+ Licence?
A foundational business communications licence. Ideal for smaller businesses and any organisation with more basic telephony requirements.
500 minutes to UK landline numbers
500 minutes to UK mobile numbers
Free mobile, desktop, and web apps
1 inclusive number per user
Call forwarding
Time of day routing
On-hold music
Text-to-speech
Hunt groups
Call conferencing
Call parking
Presence settings
SMS to up to 25 recipients
Multi-factor authentication
Range of hardware options
Looking for more? We offer Enterprise-grade Unified Comms.
Find out more about UCaaS.

The impact of AI on user experience
Digital transformation must start with the network.
995%
reduction in helpdesk tickets reported from retail stores*
fewer field engineering visits*
reduction in helpdesk tickets reported by employees*
reduction in mean time to resolution*
reduction in networking OpEx*
*Statistics taken from Juniper Mist use cases.
Advanced call management
Cloud-PBX tools offer a professional appearance and the best possible experience. Drag and drop routing means intuitive call flow building, including IVR menus, hold music, queues, hunt groups, forwarding, voicemail and time diaries.
SMS messaging
Customers can compose, send and schedule SMS messages to individuals or entire phone books, view real-time previews, and view price per recipient to stay within budget.
Video meetings
Scheduled and instant video meetings, all managed from one application screen. Featuring screen-share, in- meeting chat, hand-raising, waiting rooms and privacy options.
Desk phone compatibility
Compatible with handsets and conference devices from all leading manufacturers, so you can match hardware to customer requirements.
Voice calls from Microsoft Teams
Teams desktop and mobile applications allow users to make and receive calls without other consoles. Teams sits seamlessly alongside our proprietary applications or desk phones for genuine endpoint flexibility.
CRM integration
Contact integration and call logging with the leading CRM platforms, delivering plug-and-play compatibility across Salesforce, Hubspot, Pipedrive, Zoho, Vtiger, Capsule, and Copper. Our Open-API library enables bespoke integrations for less common CRMs.
Cloud storage integrations
Back up recordings and CDR data through seamless integration with leading cloud storage solutions; Azure, Amazon S3, Dropbox, and Google Drive. Automatic cloud-sync ensures files are securely backed-up without adding admin.
Call recordings
We offer native cloud-based call recording with a 90-day archive, secure storage, and integration with leading cloud providers. For regulated industries, CallCabinet provides compliance recording, 256-bit encryption, and advanced analytics.
Reporting & callboards
Easy-to-build wallboards and on-demand or scheduled reports to help customers track team performance. KPIs include average wait times and answered and abandoned calls.
Big customer benefits
Advanced, customisable protection and automatic updates, plus lower TCO when compared to in-house security solutions.
Simplified infrastructure
With one provider taking care of connection and security, you can concentrate on building your business and so can your customers.
Increased productivity
Customers can easily manage employee internet use, applying controls and monitoring site access.
Complete control
The FortiGate NGFW lets customers establish user and group specific policies and processes, according to their unique needs.
Reduced risk
With their network securely defended against unauthorised access, risks to revenue and reputation are minimised.
Customers to
keep in mind
At first glance, Dark Fibre looks like a cheaper network alternative, but there are implications. For customers with network know-how, it can be a great move.
What makes our Dark Fibre different?
Our Dark Fibre is installed by our own engineers using a unique combination of Openreach Physical Infrastructure Access (PIA) and our own ducts.
Private lines, total security
Your services and infrastructure is physically separate from any others, for the highest level of security and privacy.
Complete flexibility, limitless capacity
Build services you need, at any capacity, using any protocol you support. Multiply capacity using Dense or Coarse Wavelength Division Multiplexing.
Guaranteed paths, predictable planning
Wavelengths are provided over a known Dark Fibre path; allowing precise, predictable service and resilience planning.
Route diversity, flexible handover
We supply diverse and bespoke physical routes for maximum resilience. Choose from single, dual or more cores with LC, SC or ST connectors.

Anatomy of a Preconnect®
Hyperfast connectivity with symmetrical speeds up to 10Gbps
Delivered via fibre with wireless resiliency and 100% uptime available
Fibre is pre-installed in the riser(s), with a distribution point per floor or suite
A master wayleave agreement that encompasses the entire asset
A private internet connection for landlord or building management use
A WiFi access point for communal access or extended coverage
A dedicated connection concierge to help your customers get the most out of Preconnect®

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