Samsung SGH-X105NBATMB - Manual (Page 81)

Sound S ettings
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The following options are available.
Error Tone: sets whether the phone informs you that you have
made a mistake or not.
Minute Minder: sets whether the phone must beep every
minute during an outgoing call to keep you informed of the
length of your call.
Connect Tone: sets your phone to beep when the person you
are calling answers the phone.