Terminal Tone Indicators; Checking The Signal Strength - Nokia 22 Operator's Manual

When light indicator 4 blinks, lift the receiver. When the enter PIN code tone is
heard, enter the PIN code followed by #. The OK tone is heard and light indicator
3 lights up. If the operation fails, see " Entering PIN code does not succeed" on
page 30.
When the terminal is being connected for the first time or after a power cut, it
takes 20-30 seconds before the terminal is connected to the network. Light
indicator 3 on the GSM terminal lights up and indicates that the connection is
active. The terminal is now ready for installing.
If the AutoPIN feature is active, the terminal automatically enters the PIN code
the next time the power is switched on.

Terminal tone indicators

The following tone signals indicate the state of the Nokia 22.
Table 3: Terminal tone indicators
Tones
- - - - - - - - - - - - - - - - - Enter SIM card
- _ _ - _ _ - _ _
- -
- - - -

Checking the signal strength

The (IOF) feature indicates the strength of the received radio signal.
To check the signal strength, lift the receiver of the DTMF telephone connected
to the Nokia 22 and key in 777**#.
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Description
Enter PIN code
Enter PUK code
Error
OK
SMS received
Setting up the terminal
20