©2001 Nokia Mobile Phones. All rights reserved.Reference information11019. Reference information Sending DTMF tonesThe phone can send DTMF tones to communicate with answering machines, computerised telephonyservices etc.Make a call in the normal way. Press and (Options), and select Send DTMF. Key in the DTMFstring or recall it from the phone book, and press (OK). Access codesYou can use the access codes described in this section to avoid unauthorised use of your phone andSIM card.The access codes (except the PUK and PUK2 code) can be changed within the Change access codesfunction (see page 62).Security codeThe 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) andset the phone to request it (see Security level on page 81).Keep the code secret and in a safe place, separate from the phone.
