switel DC 611 Mode D'emploi page 180

Setting the telephone
Message Waiting on/off
If you have received a message in your network voice mail box,
the display shows Msg Wait. Please contact your provider in
case of questions how to get access to this voice mail box. You
can switch off this display message.
Changing the PIN
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Press the Menu/OK key.
/ Select Settings and press
Menu/OK.
/ Select Base Settings and press
Menu/OK.
/ Select Msg wait Off and press
Menu/OK. The display message is deleted.
Press the Menu/OK key.
/ Select Settings and press
Menu/OK.
/ Select Base Settings and press
Menu/OK.
/ Select Settings and press
Menu/OK.
/ Select System PIN and press
Menu/OK.
Enter the relevant PIN (default 0 0 0 0) and
press Menu/OK.
Enter the new PIN and press Menu/OK.
Enter the new PIN again and press Menu/OK.