Calling Number Display

What is Calling Number Display and Calling Line Identification?

Calling Line Identification (CLI) is the data, about a call, automatically generated by a telephone network at the time the call is made. Calling Number Display (CND) is a feature of the CLI system which enables the recipient of a call to view the telephone number of the caller.

How does CND work?

You will need a CND compatible handset in order to use this feature. Contact us to activate CND. Once you have this function activated, you will automatically see the phone number on your phone's display screen for most incoming calls.

When won’t the number be displayed?

There are some situations when CND won’t be displayed:
PRIVATE – is usually displayed if the caller has chosen to block their number, has a silent line or is calling from overseas.
UNAVAILABLE – is usually displayed if the caller is overseas or calling from a payphone.
PAYPHONE – indicates the caller is calling from a payphone.

Using ‘Blocking’ or ‘Display’ codes

By default, your number will be displayed when you make calls to a CND activated phone unless you requested a silent number or you block CND.

You can obtain a silent number or block your CND on a permanent basis by contacting us. Alternatively, you can use a ‘Blocking Code’ to block CND on a call-by-call basis. You can also display your number for a particular call on a service that is otherwise blocked by using a ‘Display Code’.

Blocking Code – to prevent displaying your number for a specific call only, dial 1831 from a standard fixed line or #31# from a mobile, prior to dialling the telephone number.

Display Code – to display your number for a particular call only on an otherwise blocked service, dial 1832 from a standard fixed line or *31# from a mobile service, prior to dialling the telephone number.

When dialling an override or an international number, ensure that the Blocking Code or Display Code is dialled before the override code or international number.

What are the benefits and disadvantages of CND?

As with any service enhancement, CND has both benefits and disadvantages:

Benefits:

You can have more control over your calls, as you can identify the caller before you choose to answer the phone, unless the caller has blocked their number.
Many phone handsets now have the capacity to store call histories and this will provide you with the ability to return calls to numbers on the display.

Disadvantages:

Privacy considerations that need to be taken into account. If you have CND activated, other people in your household will be able to identify the incoming calls you receive.
Unless you use a blocking code your telephone number will be displayed each time you call people who have CND compatible handsets. This may result in the recipient being able to capture your number and identify you when you call again in the future, or the recipient may call you on the number that they have captured.

Are there times when my number will always be visible?

There are some situations in which your phone number will always be presented even if your CND is blocked or you have a silent number:

When calling emergency services (000)
If you use your phone to make a dial-up internet connection (the dial up connection will display your number, not phone calls you make)
When you send or reply to a text message from your standard phone service or send or reply to an SMS or MMS message (landline and mobile phones).

Pricing

There are costs associated with activating Calling Number Display on your handset. Please speak to a customer service representative for details of costs.

International CND

If your number is visible on calls you make in Australia then your number will also be visible when international calls are made and vice versa.

Further information

Contact us for further information, to make changes or to confirm your CND status.

More information is also available on the Australian Communications and Media Authority (ACMA) website at www.acma.gov.au and search under 'CND'.

Faults / Complaints

CND and CND blocking are enhanced call handling features under the Customer Service Guarantee. Accordingly, we have an obligation to meet certain performance standards and a failure to meet these standards may entitle you to compensation.

If you have a complaint regarding the use of CLI or CND which you have been unable to resolve directly with us, you may lodge a complaint with the Telecommunications Industry Ombudsman (TIO).

For further information go to www.tio.com.au or call the TIO on 1800 062 058 or (TTY) 1800 675 692.