If you only have one phone and it's capable of making voice calls using broadband, you won't need a new phone. It'll work just fine.

You will need to check your phone's user manual to see if it is capable of making voice calls over broadband. Alternatively, you could search online for your phone's make and model number to see if it is capable.

If you have integrated wiring, you can plug your phones into your wall phone jack. If you don't have integrated wiring you will need to plug your base unit into the back of your One NZ modem. Remember to check that your phone is capable of making voice calls over broadband first.

When some houses had fibre, or HFC installed, integrated wiring was also added. This means your existing wall phone jacks link to your Fibre or HFC connection. We are unable to offer integrated wiring for our ADSL or VDSL customers, and we recommend talking to your local electrician.

Once your modem is set-up, connected to the internet and you have switched to voice calling over broadband, plug your phone into the wall phone jack. If you hear a dial tone, you have integrated wiring.

No, we are unable to offer integrated wiring for our ADSL or VDSL customers at this time. We recommend talking to your local electrician.

One NZ’s landline service runs over broadband and relies on power in your home to operate. This means that if there is a power cut in your home, your broadband and phone will not work, and you will not be able to call 111 emergency services on your landline (unless you have a backup power source). Some devices, such as home or medical alarms, may also not work during a power cut if they do not have an inbuilt battery. It's a good idea to always have a charged mobile phone handy or to prepare an alternative power source such as a generator or battery.

If you can show that you, or someone in your household, are more likely than other consumers to require the 111 emergency service, and have no alternative means to contact 111 at the premises, we will provide you with a means to contact 111 in a power cut, free of charge. For more details on our obligations under the Commerce Commission’s 111 Contact Code, eligibility criteria and how to apply to register as a vulnerable customer, visit one.nz/vulnerability or call us on 0800 438 448 (between 8am-7pm, Monday to Friday). Our website also contains information about how to make a complaint relating to the 111 Contact Code.

Most systems such as monitored medical, security or other alarms, fax machines, EFTPOS terminals and loud external ringers should work over broadband. However, we recommend checking with your alarm provider to confirm this. Will my fax machine work with voice calling over broadband? Most fax machines will work using voice over broadband. However this depends on the make, model and age of the fax machine. We recommend checking the fax machine’s manual to see if it will work over broadband. You may also want to consider using a cloud based fax solution e.g. fax to email services instead of your fax machine. Providers such as TNZ offer this alternative.

The majority of EFTPOS terminals should work over broadband rather than using a dial up phone line. However, we recommend you have a discussion with your EFTPOS terminal provider to confirm this before you upgrade.

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 voice calling over broadband 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, please call us on 0800 891 740.