Many professionals don’t realise how much an outdated telephone system can hold their company back. Perhaps you’ve put off upgrading because it ‘still works’, but in reality you’re clinging to near-obsolete tech that’s costing your money and opportunities.

Here are five clear signs your business has outgrown its current B2B telephone system, and why now is the time to switch to a smarter solution like hosted IP telephony.
1. You’re Still Using ISDN or PSTN Lines
The upcoming ISDN and PSTN switch-offs mean businesses still using legacy phone lines are on borrowed time. If your current system depends on these old networks, you’re facing rising maintenance costs, and eventually, in 2027, you will be disconnected.
A cloud-based VoIP solution like Horizon VoIP from Criterion Systems is not just ready for the future: it’s much more reliable and flexible.
2. Remote or Mobile Working Is a Nightmare
Nowadays, your team probably isn’t all in the office. If your current system makes remote work difficult or impossible (for example, difficulties referring calls to those outside the office) your business is falling behind.
VoIP systems are built for flexibility, letting employees manage calls from mobiles, laptops and desktops without missing a beat.
3. You’re Paying for Expensive Hardware and Maintenance
Traditional PBX systems can be expensive to maintain, especially when hardware fails or needs upgrades. With a cloud-based B2B telephone system, there’s no clunky equipment to house or repair.
Criterion Systems hosts everything centrally, so you cut costs on both infrastructure and IT issues.
4. You Struggle to Scale with Business Growth
If adding a new team member means calling your phone provider, installing new lines or buying more handsets, your system isn’t built for the modern world.
With Horizon VoIP, you only pay for the users you need. Adding or removing people is fast and simply, making it perfect for businesses with multiple sites or remote workers.
5. Communications Feel Disconnected
Do your teams juggle mobile phones, landlines and different voicemail boxes? That’s a warning sign. A modern VoIP system unifies all your communications in one place. Staff can manage calls through an online dashboard, and stay reachable whether they’re at home, in the office or on the move.
Don’t Wait for The Big Switch Off
If any of these signs sound familiar, it’s time to reconsider your B2B telephone system. With Criterion Systems’ Horizon VoIP, you get a fantastic communications platform built for how modern businesses actually work.
If you’re looking for a new B2B telephone system, simply contact our team today.