VoIP vs. Traditional Landlines: Is It Time to Switch?

The PSTN Switch-Off Is Coming

Openreach is switching off the traditional Public Switched Telephone Network (PSTN) by January 2027. This means every business currently relying on traditional landlines, ISDN, or legacy phone systems needs to migrate to an IP-based alternative. The clock is ticking.

VoIP vs. Traditional: The Comparison

Cost

VoIP systems typically cost 40–60% less than traditional phone systems. No expensive PBX hardware, no per-line charges, and international calls at a fraction of the cost. Most businesses see ROI within three months.

Features

Traditional landlines offer voice calls. VoIP offers voicemail-to-email, call recording, auto-attendants, CRM integration, video conferencing, and unified communications — all included as standard.

Reliability

Modern VoIP runs on enterprise-grade cloud infrastructure with 99.999% uptime SLAs. With proper internet redundancy, VoIP is at least as reliable as traditional telephony — and often more so.

Flexibility

VoIP works anywhere with an internet connection. Your team can take business calls on their mobile, laptop, or desk phone — at home, in the office, or on the road.

Making the Switch

• Audit your current phone system and line inventory
• Assess your internet bandwidth and redundancy
• Choose between hosted VoIP and on-premises SIP trunking
• Plan the migration to minimise disruption
• Port your existing numbers — they're yours to keep

Denwen Communications Solutions

We provide fully managed VoIP solutions tailored to your business. From initial assessment to migration and ongoing support, we make the switch seamless.