Setting up the terminal©2001 Nokia Mobile Phones. All rights reserved. 20When light indicator 4 blinks, lift the receiver. When the enter PIN code tone isheard, enter the PIN code followed by #. The OK tone is heard and light indicator3 lights up. If the operation fails, see “ Entering PIN code does not succeed” onpage 30.When the terminal is being connected for the first time or after a power cut, ittakes 20-30 seconds before the terminal is connected to the network. Lightindicator 3 on the GSM terminal lights up and indicates that the connection isactive. The terminal is now ready for installing.If the AutoPIN feature is active, the terminal automatically enters the PIN codethe next time the power is switched on.Terminal tone indicatorsThe following tone signals indicate the state of the Nokia 22.Table 3: Terminal tone indicatorsChecking the signal strengthThe (IOF) feature indicates the strength of the received radio signal.To check the signal strength, lift the receiver of the DTMF telephone connectedto the Nokia 22 and key in 777**#.Tones Description- - - - - - - - - - - - - - - - - Enter SIM card- _ _ - _ _ - _ _ Enter PIN code- - Enter PUK code- - - - ErrorOKSMS received