
One place for every business conversation
The old phone lines are being switched off, your team is spread across too many apps, and client calls still get missed. LANIX fixes that. We move businesses in London and across the UK onto one system for calls, chat and meetings — usually Microsoft Teams or cloud calling — so your team can be reached anywhere, on the same numbers your clients already know.
Take and make calls on your office number from a laptop, a mobile or a desk phone — at home, on site, or anywhere in the UK.
No more paying for three tools that do overlapping jobs. Everything happens in one place your team already knows how to use.
Calls route to the right team, first time, with sensible rules for busy periods, out of hours and holidays — so fewer enquiries slip away.
Calls land where they should instead of ringing out, sitting in voicemail or bouncing between people.
Office, home, a client site or anywhere else in the UK — same number, same experience, no personal mobiles involved.
One system for calls, chat and meetings replaces the overlapping apps and old lines quietly draining your budget.
New offices, new starters and team changes become a quick change of settings, not a months-long telecoms project.
Simple reporting on call volumes, missed calls and response times, so you know where to add people or change cover.
UK businesses use LANIX to replace legacy and ISDN phone systems with Microsoft Teams Phone and cloud calling — keeping their numbers and cutting their monthly costs.
“We kept every number our customers have called for twenty years and moved the lot into Teams. Nobody outside the business noticed a thing.”
“Our old ISDN lines and maintenance contract cost more than the entire cloud phone system does now. The bill halved in the first month.”
“Staff take office calls on their laptops and mobiles wherever they are. Nobody has to sit at a desk phone to be reachable any more.”
Your phone system rarely changes on its own. Businesses in London and across the UK usually sort it out alongside their wider Microsoft 365 setup, the AI tools running on the same data, or an office move where the numbers have to come too.
The strategic umbrella: tenant management, security, collaboration and AI adoption across your whole Microsoft 365 estate.

Role‑based Copilot agents and Copilot Studio builds that turn your Microsoft 365 data into everyday productivity.

Planned office moves and site build-outs — comms rooms, cabling, hardware, phones and users relocated with minimal downtime.
You keep them. In almost every case we port your existing numbers across to the new system, so your clients carry on calling the number they already have. Porting is planned in advance and timed so there is no gap in service.
It depends on how old they are. Many modern IP desk phones can be reconfigured for a new cloud system, and we will tell you honestly if yours can. If your handsets are tied to an old on-premise system, plenty of businesses simply use laptops and mobile apps instead and buy handsets only for reception or shared areas.
Cloud phone systems are usually charged per user per month, so the cost scales with your headcount rather than a big upfront purchase. If you already pay for Microsoft 365, adding calling is often cheaper than running a separate phone system alongside it. We give you a fixed picture of licensing, any hardware and the one-off setup before you commit — and most businesses find it costs less than the old lines they are replacing.
The traditional UK phone network is being retired, which means ISDN and analogue business lines are being withdrawn and can no longer be relied on long term. If your phone system, alarm line, lift line or card machine still runs over an old line, it needs to move to an internet-based service. We identify everything that depends on those lines and move it across before it becomes urgent.
Call quality depends on your connection, so we check it first. We test your existing broadband, prioritise voice traffic on your network so calls are not fighting with downloads and video, and where the line genuinely is not good enough we recommend a better connection. We would rather fix that up front than have you blame the phone system.
No. Because the phone system lives in the cloud rather than in your building, we can set calls to automatically divert to mobiles, another office or a voicemail-to-email as soon as your connection drops. Businesses that cannot afford any interruption also run a backup connection, which we can arrange.
A straightforward move for a small team is typically a couple of weeks, most of which is waiting on number porting rather than technical work. Larger sites, multiple offices or complex call routing take longer to design and test. The switch itself normally happens overnight or at a weekend so your working day is unaffected.
You do not have to. Because LANIX handles connectivity and telephony together, you can have both under one arrangement with one point of contact. That matters when something goes wrong, because there is nobody to blame it on — we own the whole thing.
Yes, and this is one of the biggest reasons businesses switch. Staff working from home or on the road make and take calls on the business number from their laptop or mobile app. Clients see your company number, staff keep their personal number private, and nobody has to forward calls manually.
A cloud system does not care where people sit. Everyone is on the same platform, so internal calls between offices are free, staff can be reached by extension wherever they are, and reception in one site can answer for another. We support businesses across the UK, not just London, and multi-site setups are routine for us.
Use the contact form to schedule a meeting with the LANIX team in London. In this session, we will:

We value your privacy
We use strictly necessary cookies to run this site, and optional analytics, marketing and preference cookies only if you allow them. Nothing optional loads until you choose. Read our Privacy Policy.