Replacing the old phone system in the cupboard with a cloud platform built for now.
Old PBX, end-of-life Avaya, Mitel that hasn't been updated in years — there comes a point where the maintenance cost exceeds the value of keeping it. Cloud VoIP modernises the whole stack: same numbers, better features, lower running cost.
From the first ring to the recording.
The same cloud phone system routes every call the way your business works, then keeps a record of it.
What we hear every week.
The frustrations behind why businesses search for replacing old phone systems in the first place. If any of these feel familiar, the fix is straightforward.
End-of-life kit nobody supports
Old Avaya, Mitel, Panasonic, Samsung — manufacturers stop releasing patches, parts get hard to find, the maintenance contract gets expensive for what you get back.
No mobile app, no integration
Old PBX in the cupboard means phones at desks only. No softphone for hybrid staff, no mobile app for field staff, no CRM integration, no call analytics.
Maintenance cost adds up
Annual maintenance contract on legacy PBX is rarely cheap, often £1,500-£5,000/year just to keep it patched and supported. Cloud VoIP rolls that into the per-user subscription.
Unsupported when something breaks
Specialist PBX engineers retiring, fewer firms supporting legacy kit. When the box dies on a Friday afternoon, finding someone to fix it is increasingly hard.
From box-in-the-cupboard to cloud platform
Migrating off a legacy on-premises PBX onto cloud VoIP changes the architecture entirely. Instead of a box in your cupboard handling all routing, voicemail, queues and integrations, all of that runs in the cloud. Your IP phones and softphone apps connect to it over your broadband. Adding users, changing routing, porting numbers — all done in a web portal rather than a service-engineer site visit. New features (call recording, analytics, mobile apps, CRM integration) become part of the standard platform rather than expensive add-ons.
Every seat, fully loaded.
- Call recording, the Telexico Mobile App and Telexico Web UC included
- Handsets pre-provisioned and shipped ready to plug in
- Moves, adds and changes from the portal, no engineer visit
The Telexico approach to replacing old phone systems.
Six things our customers consistently tell us matter.
Cloud-hosted platform
No more box in the cupboard. No more annual maintenance contract on hardware. Updates happen continuously, automatically.
Desk, mobile, desktop
Same extension, same caller ID, same call history across IP phone, mobile app and desktop softphone.
Keep all your numbers
UK number porting transfers every existing number cleanly. Customers see no difference.
Call recording and analytics
Standard part of the platform — no extra hardware, no extra licensing per recording channel.
CRM integration
Click-to-dial, contact pop-ups, call logging back to CRM — supported across major UK CRM platforms.
UK install and support
Wolverhampton-based engineers for install, configuration, training and ongoing support.
Built for the way phones actually get used now
Phone usage patterns have changed completely since most legacy PBXs were installed. Hybrid staff, mobile-first workflows, integration with cloud apps, video calling, team chat — none of which legacy boxes handle natively. Cloud VoIP is built around how phones actually get used today, not how they were used in 2012.
How it works for businesses like yours.
Three real-world setups we deliver across the UK.
End-of-life PBX replacements
Avaya IP Office, Mitel MiVoice, Panasonic NS series — all reaching end-of-support windows or running on hardware no one wants to maintain.
Multi-site businesses with disparate systems
Different PBX at each site. Cloud VoIP consolidates onto one platform across all sites with free internal calls.
Growing businesses outgrowing local PBX
Old PBX rated for 20 extensions, business now needs 50. Cloud scales without needing a forklift upgrade.
Why UK businesses pick Telexico for PBX replacement
We've done dozens of PBX replacements across the UK. We know the migration patterns, the common pitfalls (number porting timing, paging system integration, door entry phones, fax lines, alarm panels), and the cutover sequencing that keeps the business running through the transition. We don't just sell you a new platform — we plan and execute the migration end-to-end.
What you actually get from Telexico.
Honest about scope. No aggressive sales tactics, no surprise renewal jumps, no tier-1 call-centre triage. Real UK engineers, transparent pricing, one provider relationship across the stack.
UK-based provider
Wolverhampton-headquartered. Engineers cover the West Midlands daily; UK-wide install via our partner network. Real UK engineer support, UK data residency, UK contractual relationship — not US-routed SaaS.
Real engineer support
When you call Telexico, you reach someone who can actually fix things. Response SLA backed by real engineering capacity rather than call-centre headcount. Named account manager for ongoing customers.
Free infrastructure review
Every engagement starts with a no-obligation audit of your current setup. Honest recommendation — sometimes that's "stay with your current provider after negotiation." We'd rather be honest than oversell.
Transparent pricing
What you sign for is what you pay — including renewal. No teaser pricing that jumps 30-100% at year two. No mid-contract CPI shock. Predictable multi-year cost from day one.
One provider, one platform
Broadband, hosted VoIP, business WiFi, AI Receptionist, 4G/5G failover, CCTV consolidated onto one Telexico relationship. Single bill, single support number, single engineer when something needs attention.
Migration project-managed
Switching to Telexico isn't DIY. We handle contract audit, notice timing, ordering, parallel running, cutover, old-provider close-out. Customer-visible disruption typically measured in minutes.
Tailored around your business.
Tell us what you have now and what's frustrating you. We'll come back with a tailored review of where we can simplify, consolidate or improve it — no fixed-package pressure, no hard sell.
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Free infrastructure review
Send us your current setup. We'll review what you have, what you pay, and where we can simplify.
Every seat, fully loaded.
Frequently asked questions
When should I replace my old PBX?
Triggers include: manufacturer end-of-support, increasing maintenance costs, hybrid working requirements the system can't handle, growth beyond capacity, or just the operational drag of maintaining a system that no longer fits. Many UK businesses target replacement well ahead of ISDN switch-off in 2027 so the timing isn't forced.
Can I keep my existing phone numbers?
Yes. UK number porting moves your existing numbers to the new cloud platform. Customers see no difference; advertising and stationery unchanged. Porting typically takes 2-4 weeks.
What about things connected to the old PBX — alarms, door entry, paging?
We audit during pre-sales. Most can be migrated: door entry phones via SIP-compatible adapters or replacement, alarms via dedicated SIM lines, paging via IP paging systems. Some legacy items may need replacement; we identify these upfront.
Will my staff need training?
Some — but most modern IP phones and softphone apps are intuitive enough that core training is 30 minutes. Power users (reception, admin staff doing transfers and call routing) get longer training. We include this as part of any install.
How long does the replacement take?
Typically 4-8 weeks end-to-end depending on size and complexity. Number porting is the longest item; kit install and configuration run in parallel. Parallel-running during cutover means downtime is measured in minutes.
What's the cost vs keeping the old PBX?
Depends on the maintenance cost of the old box. Most legacy PBX maintenance contracts run £1,500-£5,000/year just to keep the system patched. Cloud VoIP rolls that into the per-user subscription, plus delivers features the old system didn't. We'll quote against your specific setup for like-for-like comparison.
What happens to my existing IP phones?
Sometimes they can be re-provisioned onto the new platform; sometimes they're proprietary to the old PBX and need replacing. We check compatibility during pre-sales. Yealink, Polycom and Cisco SIP phones generally migrate; proprietary handsets from Avaya, Mitel etc. usually don't.
Apply this to your business?
Reading the guide is one thing; applying it to your specific operation is another. Send us your current setup — we'll review what you have, what fits, and where to start. No hard sell, no fixed-package pressure.