You can choose how many seconds you allow the phone to ring before the voicemail picks up. The standard time is set for 20 seconds but you can change this duration. For exemple: if you want your voicemail to pick up after 5 seconds you have to type **61*+32490468787**5# on your phone keyboard and confirm with the dial button of your smartphone. Instead of 5 seconds you can also choose following values: 10, 15, 20, 25 or 30 seconds. If you want to do this you have to change the 5 in the instruction with the number of seconds you want.