VoIP works through your broadband connection. This means a high-speed fibre connection is required.
The minimum VoIP internet speed requirement is 90-100 kbps (kilobit per second) per phone. This must be multiplied by each further handset you wish to use at the same time.
You can check your existing service provider’s speed using the Broadband Speed Checker.
These offer a reasonable estimation of your broadband speed. Not all broadband providers include unlimited data and superfast speeds, so make sure that the broadband deal meets your requirements before signing up.