Ercogener GenPro 25e - 5.8 Verification of the modem registration on GPRS network

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Descriptions and non-contractual illustrations in this document are given as an indication only.
ERCOGENER reserves the right to make any modification.
Dct_427_02
5.8 Verification of the modem registration on GPRS network
1. Make sure that a valid SIM card is inserted in the SIM card reader of the modem.
2. Use communication software like HyperTerminal, and enter the following AT commands:
a. AT+CPIN="xxxx" to enter the PIN code. The user has only 3 attempts to enter the PIN code. After
the third attempt, only a second code (code PUK) supplied by the operator, will allow you to choose
a new PIN code.
b. AT+CGREG? to check the registration status on the network. The response will be of the following
format: +CGREG : <mode>, <stat> with:
<Mode> = configuration of the registration message not solicited,
<Stat> = registration status.
3. Check the registration status according to the value returned in the table below.
Table 45 : Verification of modem registration on GPRS network
Command
Response
Interpretation
AT+CGREG?
+CGREG : 1,0
The modem is not recognized by the
network.
+CGREG : 1,2 ou 1,3
The modem is searching for a network
operator.
+CGREG : 1,1
The modem is attached in GPRS to the
local operator.
+CGREG : 1,5
The modem is attached in GPRS to the
roaming operator.
If the modem is not registered, check:
- the connection between the modem and the antenna
- the reception level of the signal (cf. § 5.5 Checking the quality of the GSM reception
signal).
- the SIM card subscription.
For more information about the AT commands, see the document "u-blox_AT_Commands_Manual_xxx.pdf"