I got an email from Telstra today:

Hi EdisonAU,

We wanted to get in touch to let you know about a few changes coming to your Silent Line service.

From 18th February 2018, we're removing the $2.93 monthly Silent Line fee from your fixed home service so you can enjoy it free of charge. This means it will no longer appear on your bill.

Your name, address and phone number will continue to be private. These details won’t be published online, printed in the White Pages, or available from Directory Assistance.

We're also giving you more flexibility and control over your privacy settings. We’ll refer to your Directory Listing setting as ‘Unlisted’ and your Caller ID will be switched to 'Off' so your number is not visible to other callers.

What's next for you?

You don’t need to do anything. Login to My Account or use the 24/7 App to check or update your Directory Listing and Caller ID settings anytime. If you’d like to know more, call us on 13 22 00 (7am to 9pm, AEDT, Monday to Friday).

NOTE: Please also see the link below:

https://exchange.telstra.com.au/silent-line-privacy-fees/

So, now you can make prank calls from home without identifying yourselves …..