Ercogener GenPro 425e - Modem Registration Status

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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 modifications.
Dct_427_02
5.7 Verification of modem registration on cellular network
Commands AT+CREG?, AT+CGREG? and AT+CEREG? provide network registration status of the modem.
Before to run these commands, the SIM card must be inserted and the PIN code entered.
5.7.1 AT+CREG? command
This command verifies the network registration status of the modem. The answer has the following format:
+CREG : <mode>, <stat> with :
<Mode> = = configuration of the registration message, by default 0
<Stat> = registration status.
Table 41 : Verification of modem registration on cellular network
Command
Response
Interpretation
AT+CREG?
+CREG : 0,0
The modem is not recognized by the
network.
+CREG : 0,2 or 0,3
The modem is searching for a network
operator.
+CREG : 0,1
The modem is attached to the local
operator.
+CREG : 0,5
The modem is attached to the roaming
operator.
+CREG : 0,4
Unknown. Coverage out of 2G, 3G, 4G.
5.7.1.1 Chronology of answers to commands AT+CREG?
After modem power on +CREG : 0,0
Being attached +CREG : 0,2
Attached +CREG : 0,1
5.7.1.2 Operator selection command AT+COPS?
Before being attached +COPS : 0
Answer when attached +COPS:0,0,"FirstOne",6
If the modem is not attached after 3mn: Verify connection between the modem and the antenna. Verify if
there is a network signal with a mobile phone.