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How to set up voice calling over broadband

Voice calling over broadband – or Voice over Internet Protocol (VoIP) – lets you use your landline phone to make calls over high-speed broadband.

Set up voice calling over broadband

Step by step setup guide

1. You’ll need the modem Vodafone supplied to use voice calling over broadband with Vodafone. Other modems will not work. If you don’t have either the below modem, please contact us.

2. Plug the power supply into your modem and wall power outlet and press the On/Off button on the back of the modem.

If you have fibre or UltraFast HFC; continue to step 3. Otherwise, go to step 6.

3. Make sure the fibre or HFC Optical Network Terminal (ONT) is switched on.

4. Connect one end of your yellow cable marked LAN/WAN cable to the modem’s WAN port and the other end into Port 1 of the fibre network terminal. After your modem establishes a connection to the internet, the internet light turns green. If the light doesn’t turn green after 1 minute, try the next port. Try each port for 1 minute until you are connected.

If you have integrated wiring; continue to step 5, otherwise go to step 6.

5. Plug your phone into the usual phone jack in the wall and check you have dial tone. If you don’t have dial tone and your internet is working go to step 7.

6. Connect a grey cable marked DSL/Phone between the grey DSL port of your Vodafone supplied modem and the usual phone jack in the wall. Use the line filter if required.

7. Plug your home phone into the Phone 1 socket on your Vodafone supplied modem and check you have dial tone.

Voip Setup


Do I need to change my landline phone?

If you only have one phone and it’s VoIP capable, you won’t need a new phone. It’ll work just fine. If you’re not sure, check your phone’s user manual.

If you don’t have integrated wiring and you have multiple phones where each one plugs into a separate phone jack in the wall then you’ll need to replace them with a new VoIP capable base unit with multiple handsets.
What is integrated wiring and how do I know if I have it?

When some houses had fibre and UltraFast HFC installed, integrated wiring was also added. This means that each of your phone jacks link up to your fibre connection. If you’re not sure if you have integrated wiring, simply plug your home phones into the phone jacks after you’ve moved to voice calling over broadband, and if there’s a dial tone that means you have integrated wiring.  

We are unable to offer integrated wiring for our ADSL or VDSL customers, we recommend talking to your local electrician.
Will my landline phone work when there’s a power cut?

All voice calling over broadband calls are made using your broadband connection. During a power cut, your broadband doesn’t work, so neither will your home phone. This includes all calls, even emergency calls to 111. We recommend always having a charged mobile phone ready to use as a backup.
What call features are available?

The following call features are all available with voice calling over broadband: Voicemail, Phone Divert, BestMates for home phone, Caller ID, Call Control and Call Waiting.

You may need to set them up again once your VoIP services are activated – you’ll find the guides on how to use the features here. Or if you’d like to add any of these services, contact us on the details below.



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