Stay Connected

Lines, Sip and VoIP

Business Communication Specialists

From physical to virtual, we have options to suit every need and budget.

Future Proof


Future proof solutions to see you beyond the PSTN switch off.

Using your Internet connection to route your call traffic, SIP and VoIP technologies are changing the way we we make and manage calls. With solutions to suit every size and budget.


Never miss a call

A feature rich hosted system giving you complete control of your calls wherever you are. Build your own Hunt Groups and Auto-Attendants, customise your on hold music, route calls to mobiles, even block nuisance numbers.

Request Call Back

SIP Trunks

Powerful, adaptable

Deep Blue offer a range of SIP trunks, including options with business continuity, so you can reroute your calls online should your system go down.

Have numbers from multiple geographic locations.

Request Call Back

Virtual Numbers

Nothing but the number

Choose an 01, 02 or 03 number from a selection of catchy options, point it to your mobile, home phone or business line and let your customers reach you wherever you are.

Great for home workers and tradesmen who want a dedicated business phone number.

Request Call Back


Copper Lines

Traditional lines provided via the copper PSTN.

While due to go off sale in 2023 and be withdrawn in 2025, in some areas they are still the only option available for the support of voice or broadband.


Public Switched Telephone Network Line

A traditional copper line, like the ones most of us still have in our homes. Still needed if full fibre connectivity is not yet available in your area. Also required for some services such as alarms or redcare.

Request Call Back


Integrated Services Digital Network

Digital lines sold in pairs which allow digital transmission of voice and data over the copper PSTN.

Terminated on a digital system, ISDN2 lines allow you to have multiple calls, on multiple numbers.

Request Call Back


Integrated Services Digital Network

A minimum of 8 digital lines which allow digital transmission of voice and data over the Copper PSTN.

ISDN2’s big brother, can be scaled up to allow up to 60 concurrent calls.

Request Call Back

Getting you connected

Rental andInstallation

From straight forward installs to complex projects, Deep Blue can do it all.

 Our team are able to manage all aspects of your install to make the whole process as smooth as possible. Why not have a look at our news feed to see stories on some of the projects we’ve worked on recently.

Already have all the lines you need? Deep Blue can take over the management of your existing lines so you have one bill, one number to contact and one great customer service team to help you.

Speak to us today to see what we can do for your business.