Samsung 08/2004 - Manual (Page 163)

Phone settings
162
Once you have entered a new PIN2, you are asked
to confirm it by entering it again.
Note: Not all SIM cards have a PIN2. If your SIM card
does not, this menu option is not displayed.
Auto redial
With the Auto Redial function, the phone makes up
to ten attempts to redial a phone number after an
unsuccessful call.
Note: The interval between two call attempts varies.
The following options are available:
Off: the number is not redialled.
On: the number is redialled automatically.
Voiceclarity
The voiceclarity feature makes received sound loud
and clear during a call. It is useful when you are in
a noisy place.
The following options are available:
Off: allows you turn off the this function.
On: allows you turn on the this function.