The upfront cost comparison is obvious: traditional PBX requires hardware, installation, and ongoing maintenance. Cloud telephony doesn’t. But the real savings go deeper than hardware.
Where the money actually goes with traditional PBX:
Hardware purchase: $5,000–50,000 depending on size
Installation and configuration: $1,000–5,000
Annual maintenance contract: 15–20% of hardware cost
Upgrades when you add users: repeat the cycle
On-site technician when something breaks: $150–300/hour
Unused lines you’re paying for anyway: fixed monthly cost
Where the money goes with cloud telephony:
Monthly subscription based on actual usage
No hardware to buy or maintain
Upgrades included in the subscription
Add users in minutes from a dashboard
Support included — no on-site visits
For a 20-person team, the difference over 3 years is typically $30,000–80,000 depending on your current setup.
The less obvious savings:
No downtime during moves or renovations. Traditional PBX means re-cabling an office. Cloud means nothing changes.
Remote work at no extra cost. Every remote agent uses the same system without additional hardware.
International calls at VoIP rates. Traditional PSTN international rates are 3–10x higher than SIP routes.
The question isn’t whether cloud telephony is cheaper. It is. The question is how quickly you want to start saving.
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