// phone system comparison
Virtual phone system vs a traditional business landline
A traditional landline connects a number to a place. A virtual phone system keeps the number but lets the call follow the people who need to answer it. The difference matters most for businesses moving before the UK PSTN switch-off.
// the short answer
A virtual phone system uses a UK business number without tying it to one physical line or premises. Calls can ring your mobile, a team or compatible devices, while a traditional analogue line is fixed to its installation. A virtual system is usually the more flexible option for a modern small business, especially as the PSTN network retires on 31 January 2027.
Last reviewed October 2026
No fixed premises
A virtual number can ring people wherever they work instead of only at the installed line.
No analogue rental
The number is digital, so there is no old-style line rental or engineer visit for basic setup.
More routing control
Add ring groups, schedules, voicemail and receptionist menus behind the same customer-facing number.
Ready for digital calling
A virtual number is already digital while analogue PSTN lines are scheduled to retire in January 2027.
Key differences at a glance
| Virtual phone system | Traditional business landline | |
|---|---|---|
| Number location | Lives in the cloud and can route to chosen phones | Tied to the installed service at a premises |
| Setup | Online setup; basic forwarding needs no new hardware | Physical line, provider setup and sometimes an engineer |
| Call handling | Mobile forwarding, ring groups, schedules, voicemail and optional receptionist | Usually a single fixed endpoint unless extra services are added |
| Working remotely | Designed to ring people away from the office | Usually depends on separate diversion arrangements |
| Future of the line | Already digital | Analogue PSTN services retire on 31 January 2027 |
If you need individual extensions and a desk-phone-first internal telephone estate, compare a virtual phone system with a full hosted VoIP PBX too.
Frequently asked questions
What is the difference between a virtual phone system and traditional business telephony?
Traditional business telephony generally connects a number to a fixed line or PBX at a premises. A virtual phone system keeps the customer-facing number in the cloud and routes calls to mobiles, landlines, apps or selected devices. This makes the number easier to move between people, places and schedules.
Can I keep my traditional landline number?
Usually, yes. Most UK geographic business numbers can be ported to a virtual service while the old line stays active until the changeover. Check the number and current provider before beginning the port.
Do virtual phone systems need an engineer visit?
Not for basic forwarding. Choose a number, configure where calls should ring and answer on the phones you already use. An engineer is not needed to install a physical line.
Will a virtual system work after the PSTN switch-off?
Yes. A virtual number is already a digital service. The UK analogue PSTN network is scheduled to retire on 31 January 2027, so businesses should check any old line and connected equipment before that date.
Is a virtual phone system always cheaper?
It can remove physical line rental, hardware and installation costs, but the right comparison depends on your call volume and required features. Check the package price, forwarding rates, included minutes and any optional services before deciding.
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