How to change the number of rings before voicemail on a Vodafone Blackberry

This is how to change the number of rings before a call is diverted to voicemail on a Vodafone Blackberry:

1. Enter **61*121*11* into your phone as if you're making a call. Do not press dial.

2. Next enter a time in seconds (any number between 5 and 30 which is a multiple of 5). Do not press dial.

3. Finally, press # and then the dial button.

4. Ring your mobile from another phone to confirm the change is successful.