This article contains steps on how to manage Caller ID on VoIP for ADSL/VDSL, Fibre or HFC connections.
This calling feature lets you see who's calling before you answer the call, and keep track of who has called.
Before you begin
Note: ADSL/VDSL is no longer sold by One NZ as of 1 October 2025.
There is a monthly fee for Caller ID .
To use Caller ID, you need a compatible phone or a Caller display unit (the unit is normally battery powered, attaches to your phone and plugs into a telephone jackpoint).
To add Caller ID, please call us on 0508 888 800.
In some situations, Caller Display cannot show a caller's number. For example, number withheld/blocked by caller, overseas numbers, payphones and some mobile phones.
Caller ID also lets you keep track of who has called. As long as the caller stays on the phone so it rings at least twice, the phone or display unit will keep a record of all the people who have called.
If you're calling someone else, and don't want your number to display in their Caller ID, you can block your ID.
Steps to use Caller ID
Block your ID when making a call
- Lift the handset and dial *67 then the number you want to call immediately following; do not pause to wait for the dial tone
Block your ID permanently
- Lift the handset, dial *31 and hang up
The ID will now be blocked when you attempt to make calls
Unblock your ID
- Lift the handset, dial *32 and hang up
The ID will now be unblocked when you make calls
Caller ID for home phone not working?
If you have one of the old standalone Caller Display (Caller ID) devices:
- Replace your Caller Display device with new batteries
- Try swapping your telephone cable
- Disconnect any phones and other equipment that are connected to your phone jacks and make sure that only the Caller Display device is connected into the phone jack i.e. you need to take off any broadband line filters and any extension cables, etc.
If you have a newer cordless phone which already has Caller ID built in then check if all handsets are affected.
If your Caller Display still isn't working then please give us a call on 0800 438 448 so we can get to the bottom of it. You may need a technician to come to your house or office to fix the problem.