Mobile data connection troubleshooting: Difference between revisions
Mobile data connection troubleshooting (view source)
Revision as of 21:16, 19 May 2020
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CLI/SSH username: root | CLI/SSH username: root | ||
CLI/SSH password: <your router’s password> | CLI/SSH password: <your router’s password> | ||
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* Connect to mobile module of the router: | * Connect to mobile module of the router: | ||
... | ... | ||
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+CREG: 1,"008B","012CD17",7 | +CREG: 1,"008B","012CD17",7 | ||
... | ... | ||
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* You probably won't see anything when you type commands, and that’s because the screen echo may be disabled. '''ATE1''' command will enable it so that you can see what you write. '''AT+QCSQ=0''' and '''AT+CREG=0''' command stops showing unnecessary output: | * You probably won't see anything when you type commands, and that’s because the screen echo may be disabled. '''ATE1''' command will enable it so that you can see what you write. '''AT+QCSQ=0''' and '''AT+CREG=0''' command stops showing unnecessary output: | ||
... | ... | ||
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OK | OK | ||
... | ... | ||
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* Check communication (wait for the module to respond '''OK'''): | * Check communication (wait for the module to respond '''OK'''): | ||
... | ... | ||
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OK | OK | ||
... | ... | ||
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==Debugging process== | ==Debugging process== | ||
* If PIN is required, initialize modem with your PIN code: | * If PIN is required, initialize modem with your PIN code: | ||
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AT+CPIN="xxxx" | AT+CPIN="xxxx" | ||
... | ... | ||
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* Use command '''AT+CPIN''' to query SIM card status: | * Use command '''AT+CPIN''' to query SIM card status: | ||
... | ... | ||
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'''Note:''' Reboot the module if it fails to identify SIM | '''Note:''' Reboot the module if it fails to identify SIM | ||
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* Use command '''AT+CREG''' to check GSM connection: | * Use command '''AT+CREG''' to check GSM connection: | ||
... | ... | ||
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'''Note:''' OK means that the module has registered on CS domain service | '''Note:''' OK means that the module has registered on CS domain service | ||
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* Use command '''AT+CGREG''' to check PS Service: | * Use command '''AT+CGREG''' to check PS Service: | ||
... | ... | ||
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'''Note:''' OK means that the module has registered in UMTS/LTE network | '''Note:''' OK means that the module has registered in UMTS/LTE network | ||
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* Configure APN, user name, password and auth type by AT+QICSGP | |||
... | |||
<context type> The protocol type (1 – IPV4; 2 – IPv6). | AT+QICSGP=<contextID>[,<context_type>,<APN>[,<username>,<password>)[,<authentication>]]] | ||
<context id> The range is 1-16. | <context type> The protocol type (1 – IPV4; 2 – IPv6). | ||
<authentication> The authentication methods (0 – NONE; 1 – PAP; 2 – CHAP; 3-PAP or CHAP). | <context id> The range is 1-16. | ||
Example: AT+QICSGP=1,1,"APN_Name","","",1 | <authentication> The authentication methods (0 – NONE; 1 – PAP; 2 – CHAP; 3-PAP or CHAP). | ||
Example: AT+QICSGP=1,1,"APN_Name","","",1 | |||
... | |||
10. Activate a PDP context: | 10. Activate a PDP context: | ||