A traditional landline sends calls over copper or fiber lines run by a telephone company. VoIP sends calls as data over your internet connection. Both can work well, and the best choice depends on your budget, how reliable your internet is and what features you need.
Side-by-side comparison
| Factor | VoIP | Landline |
|---|---|---|
| Cost structure | Often a monthly per-user fee, cheap long distance | Line rental plus call charges |
| Setup | Software and phones, can be fast | Line installation may be needed |
| Features | Voicemail to email, apps, auto-attendant | Basic calling features |
| Power outage | Needs power for router and phone unless backed up | Often keeps working on line power |
| Call quality | Depends on internet quality | Generally consistent |
| Mobility | Use the same number anywhere | Tied to a location |
When VoIP is the better fit
- You have remote or multi-site staff
- You make many long-distance or international calls
- You want modern features without buying a PBX
- Your internet connection is stable and fast enough
When a landline still makes sense
- Your internet connection is unreliable
- You need phone service during power outages without battery backup
- You have alarm or legacy equipment that expects a traditional line
Reliability and emergency calling
VoIP depends on your internet and power. A battery backup for the router and phone adapter helps, and many businesses add mobile failover. Confirm how your provider handles emergency calls and address registration, because location information can differ from a fixed landline.
Check your bandwidth first
A handful of calls need little bandwidth, but offices add up quickly. Use the VoIP bandwidth calculator to see what your calls need. New to the topic? Start with what VoIP is.
Frequently asked questions
Is VoIP cheaper than a landline?
Often it is, especially for multiple users and long-distance calls, but compare current quotes including taxes, devices and add-ons.
Does VoIP work during a power outage?
Only if your router, modem and phone equipment have backup power or you use a mobile failover.
Can I keep my landline number on VoIP?
Usually yes through number porting, subject to your provider and area.
