What is VoIP for Business? Complete UK Guide

How Does VoIP Work?

When you make a call on a VoIP system, your voice is converted into small digital data packets and sent over your internet connection — exactly like an email or a web page. At the other end, those packets are reassembled into audio. The whole process happens in milliseconds, so calls sound clear and feel instant.

Unlike traditional landlines, which rely on a physical copper telephone network, VoIP works over any broadband connection. It doesn't matter whether you're on full fibre, a leased line or even 4G — as long as you have a stable internet connection, VoIP works.

What Features Does a Business VoIP System Include?

A modern hosted VoIP system includes all the features your business needs, included in the monthly price — not as expensive add-ons:

• Call queuing — callers hear their position in the queue instead of a busy tone
• Auto-attendant / IVR — "Press 1 for Sales, Press 2 for Support"
• Call recording — all calls recorded with 90-day retention for compliance and training
• Voicemail to email — missed calls sent as audio files to your inbox
• Mobile app — staff use their mobile phones as office extensions, anywhere
• Hunt groups — calls ring multiple phones simultaneously or in sequence
• Call forwarding — divert calls to any number or device
• Conference calling — multi-party calls without expensive conferencing services
• Softphone — use your laptop or PC as a phone with no hardware needed
• MS Teams integration — make and receive calls directly inside Microsoft Teams

How Much Does Business VoIP Cost?

VoIP is significantly cheaper than traditional phone lines. Here's a typical comparison for a 10-user business:

What Do You Need for VoIP?

Getting started with VoIP is simpler than most businesses expect. You need three things:

• Broadband connection — standard business broadband is fine. Each VoIP call uses roughly 100kbps, so a 10Mbps connection handles 100 simultaneous calls with headroom to spare.
• VoIP phones or a softphone app — we supply desk phones with every installation, or you can use mobile apps on existing devices.
• A hosted VoIP platform — we manage everything in the cloud. No PBX hardware on your premises, no engineers to call when something breaks.

VoIP for Different Business Types

VoIP works for any size or type of UK business. Here's how different sectors typically use it:

• Offices and professional services — multiple extensions, MS Teams integration, call recording for compliance
• Retail and hospitality — call queuing for busy periods, AI receptionist for out-of-hours
• Multi-site businesses — all sites on one system, internal calls free, managed from one portal
• Tradespeople and sole traders — mobile app keeps your business number separate from personal calls
• Healthcare and dental practices — call queuing, recording, AI booking integration

Is VoIP Reliable?

Modern hosted VoIP is extremely reliable — in many cases more reliable than traditional landlines. At Telexico, our Cloud X platform runs on enterprise-grade UK data centres with 99.99% uptime. If your broadband drops, calls automatically divert to mobile numbers so you never miss a call.

The one risk with VoIP is internet dependency. We always recommend pairing VoIP with a failover broadband connection — a 4G/5G backup that kicks in automatically if your main line drops. For most businesses, this is already included in a Telexico bundle.

Frequently Asked Questions