WM_PRJ_M13_UGD_001 - 001
20th July 2004
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5.6 Checking the pin code status
To check that the pin code has been entered, use a communication software
such as Hyperterminal, then enter
AT +CPIN?
command.
The table below gives the main responses returned:
AT +CPIN response (*) Interpretation
+CPIN: READY Code PIN has been entered
+CPIN: SIM PIN Code PIN has not been entered
(*)For further information about the other possible responses and their meaning
refer to document [1].
5.7 Verifying the network registration of the modem
1. Make sure a valid SIM card has been previously inserted in the SIM card
holder of the modem.
2. Using a communication software such as Hyperterminal, enter the
following AT commands:
a.
AT+CPIN=xxxx
to enter PIN code xxxx.
b.
AT+CREG?
.
To ascertain the registration status.
The format of the returned response is the following:
+CREG: <mode>,<stat>
with:
o
<mode>
= unsolicited registration message configuration,
o
<stat>
= registration state.
3. Verify the state of registration according the returned value given in the
table below.
Table 3: Values of network registration
Returned Value (*)
<mode>,<stat>
Network registration
+CREG: 0,0 No (not registered)
+CREG: 0,1 Yes (registered, home network)
+CREG: 0,5 Yes (registered, roaming)
(*)For further information about the other returned values and their meaning
refer to document [1].
If the modem is not registered, perform the following procedure:
! Check the connection between the modem and the antenna.
! Verify the signal strength to determine the strength of the received
signal (refer to paragraph 5.4).
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