VoIP phones systems convert the sound signal of users' voices into digital data streams, which can then be sent in “packets” over the Internet.

The signal is passed through an Ethernet cable to the VoIP server or gateway, before connecting with the Internet. Investing in a VoIP Phone system means a business has the freedom to use a variety of different devices to make and receive calls, including physical IP phones, computers or laptops, and smart phones.

Once you’ve set up a VoIP phone system, get ready for cheaper domestic calls and low price per minute international calls, too.

VoIP desk phones can either be set up as a new system or integrated into an existing one.

If you’re looking to integrate business phone systems, contact your current system supplier for advice.

In this guide, we've highlighted 11 of the best VoIP phone models in the corded and DECT (cordless) phone categories. Each of them will integrate fully with a VoIP phone system.

What is hosted VoIP?

With hosted VoIP, the infrastructure is based ‘in the cloud’ rather than on your premises. A service provider owns, manages and maintains the infrastructure in a secure data centre. You pay a monthly fee to use the service. Most businesses find hosted VoIP to be the best option as it’s so easy and low-maintenance.