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The real numbers behind VoIP savings for UK businesses. Line costs, call charges, hardware, maintenance — a practical breakdown of where the savings come from.
Most UK businesses switching from ISDN or traditional BT business lines to VoIP save between 40 and 60 percent on their monthly phone costs. Here's exactly where those savings come from.
Traditional phone systems charge per line. An ISDN2 system costs £30–40/month in line rental. An ISDN30 system can cost £200–400/month in line rental before a single call is made. VoIP has no line rental — you pay per user, not per line, using your existing internet connection.
Traditional tariffs charge per minute for UK calls. At typical rates, a team making 2,000 minutes of calls per month pays £60–80/month in call charges. On Telexico VoIP with unlimited UK calls included — £0.
Traditional phone systems need physical PBX hardware costing £2,000–20,000 to buy plus ongoing maintenance contracts. Hosted VoIP has no on-premise hardware. The PBX runs in Telexico's data centres — maintained and updated by our team at no extra cost.
Adding a line on a traditional system requires an engineer visit, possible hardware upgrades and significant lead time. Adding a VoIP extension takes minutes in the portal and costs the standard per-user rate.
On traditional systems: call recording costs £50–200/month, auto-attendant £30–100/month, call reporting £20–50/month. On Telexico VoIP, all of these are included in the standard per-user price.
Before (ISDN2 + charges + features): £225/month
After (Telexico VoIP, 10 users): £99.90/month
Monthly saving: £125.10 (56%). Annual saving: £1,501.
Savings start from month one. No setup fees on Telexico plans — your first invoice will already be significantly lower than your previous phone bill.
No upfront cost required. Telexico VoIP is a monthly subscription with no setup fee. IP desk phones are optional from £40 if you want physical handsets.
Payback is immediate — savings start from day one with no upfront investment. The typical annual saving of £1,200–£2,500 compounds across the contract term.
Yes — international call rates on VoIP are typically 70–90% cheaper than traditional business tariffs. US and Australia calls often under 1p/minute.