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VoIP & Cloud Telephony

Business phone lines moved to the cloud: your numbers ported, calls routed properly, and the same number on Mac, iPhone or a desk phone.

Reviewed by the Stabilise engineering team.

Get a quote+44 203 355 7522

How we deliver this

Your desk phone does not need a desk

Traditional phone lines tie calls to a building, and the UK's old analogue phone network is being switched off, so lines on it have to move anyway. A cloud phone system gives every person a business number that rings on their Mac, their iPhone or a desk phone, in the office or at home. Clients keep calling the same numbers.

Choosing the platform

The right system usually follows what you already use:

Microsoft 365. Teams Phone keeps calls in the app people already have open.

Google Workspace. Google Voice is simple to run and managed from the same admin console.

Busy inbound lines. If you need call queues, reporting or contact-centre features, a dedicated platform such as RingCentral or Dialpad gives more room.

We recommend one, you sign up direct, and the account and numbers stay yours.

What we set up

Number porting. Your main number, direct dials and any others move from your current provider, whether landline, SIP trunk or an old phone system on site. Porting dates are set by the losing carrier, so we book the switch and keep the old service running until it completes.

Call routing. Menus, ring groups, call queues, opening hours and voicemail sent to email, so calls reach the right person without someone transferring them by hand.

Apps on every device. The phone app on each Mac and iPhone, pushed out through your device management, with headsets or desk phones for the people who prefer them.

Links to your other tools. Click-to-call from your CRM and presence from your calendar, where the platform supports it.

How it works

Week 1: Audit. We list every number you have, who answers it, where calls should go out of hours, and what the current contracts say about notice periods.

Week 2: Build. The new system is set up with users, routing and voicemail, and tested on temporary numbers while the old lines keep working.

Weeks 3 to 4: Port and switch. The numbers move on the agreed date. We check inbound and outbound calls on every number that day and fix anything that does not ring where it should.

Afterwards. Changes to routing, new starters and leavers are handled through the helpdesk.

Why Stabilise

We already manage the Macs, iPhones and accounts the phone system runs on, so a new starter's number, app and voicemail are set up with the rest of their onboarding, and a leaver's number is redirected when they go.

Frequently Asked Questions

Will we keep our phone numbers? Yes, in almost every case. UK geographic and non-geographic numbers can be ported, and we check each one before the move.

Will there be a gap in calls during the switch? The old service runs until the port completes, so there should be no gap. On the day we test every number.

Do people need desk phones? No. Most teams use the app on their Mac and iPhone. Desk phones are there for reception or anyone who prefers one.

Is call quality as good over the internet? On a properly set-up office network, yes. We check the network can prioritise voice traffic before the switch.

Scoped, priced, delivered.

Every project follows the same predictable path. You know what you're paying for and when it lands, before we write a single line of config.

01

Discovery

We assess scope, requirements, and constraints. You get a clear picture of what's involved before we quote.

02

Plan & Quote

Fixed scope, fixed price, fixed timeline. No hourly billing, no scope creep, no surprise invoices.

03

Delivery

We build it while your team keeps working, running cutovers out of hours where that is what it takes. Zero downtime, and aftercare once it is live, with the period set out in your project document.

These describe the work. The proof lives next door.

Every page here sets out what a project involves, how we run it, and what you get at the end. For what happened when we did it for a real client, read the case studies. For what those clients say afterwards, read the reviews. Both are named, dated, and verifiable.

Independently certified

Cyber Essentials Plus Certified

Cyber Essentials Plus is audited in person by an external assessor, not self-declared. It is the standard we hold our own estate to before we ask you to hold yours to it.

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Want this delivered for your team?

Tell us what your setup looks like now. We will scope it, give you a clear plan, and tell you exactly what it costs.

Scoping costs nothing and carries no obligation. You get a written plan and a fixed price before anything starts.