By default, your phone will ring for 15 seconds before being diverted to Voicemail.
Voicemail ring times can only be changed in 5 second intervals between 5 and 25 seconds.
If you wish to extend or reduce the ring time, please dial the following number, replacing <delay time> with 5, 10, 15, 20 or 25:
61
+61414121000
<delay time> #
For example, to set your ring time to 25 seconds, enter:
61
+61414121000
25 #
On most phones you will need to either press and hold the key labelled with ‘+’ or press it twice quickly to type the '+' symbol.