19. Reference Information; Sending Dtmf Tones; Access Codes; Security Code - Nokia 3330 User Manual

19. Reference information

Sending DTMF tones

The phone can send DTMF tones to communicate with answering machines, computerised telephony
services etc.
Make a call in the normal way. Press
string or recall it from the phone book, and press

Access codes

You can use the access codes described in this section to avoid unauthorised use of your phone and
SIM card.
The access codes (except the PUK and PUK2 code) can be changed within the Change access codes
function (see page 62).

Security code

The security code can be used to avoid unauthorised use of your phone (see Security level on page 81).
The default setting for this code is 12345. Change the code (see Change access codes on page 81) and
set the phone to request it (see Security level on page 81).
Keep the code secret and in a safe place, separate from the phone.
110 ©2001 Nokia Mobile Phones. All rights reserved.
and (Options), and select
(OK).
Send DTMF. Key in the DTMF