Difference between revisions of "Mobile data connection troubleshooting"
From Teltonika Networks Wiki
| Line 18: | Line 18: | ||
+CREG: 1,"008B","012CD17",7 | +CREG: 1,"008B","012CD17",7 | ||
... | ... | ||
| − | --- | + | ---- |
* 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: | ||
... | ... | ||
| Line 28: | Line 28: | ||
OK | OK | ||
... | ... | ||
| − | --- | + | ---- |
* Check communication (wait for the module to respond '''OK'''): | * Check communication (wait for the module to respond '''OK'''): | ||
... | ... | ||
| Line 34: | Line 34: | ||
OK | OK | ||
... | ... | ||
| − | --- | + | ---- |
==Debugging process== | ==Debugging process== | ||
* If PIN is required, initialize modem with your PIN code: | * If PIN is required, initialize modem with your PIN code: | ||
| Line 40: | Line 40: | ||
AT+CPIN="xxxx" | AT+CPIN="xxxx" | ||
... | ... | ||
| − | --- | + | ---- |
* Use command '''AT+CPIN''' to query SIM card status: | * Use command '''AT+CPIN''' to query SIM card status: | ||
... | ... | ||
| Line 48: | Line 48: | ||
'''Note:''' Reboot the module if it fails to identify SIM | '''Note:''' Reboot the module if it fails to identify SIM | ||
| − | --- | + | ---- |
* Use command '''AT+CREG''' to check GSM connection: | * Use command '''AT+CREG''' to check GSM connection: | ||
... | ... | ||
| Line 57: | Line 57: | ||
'''Note:''' OK means that the module has registered on CS domain service | '''Note:''' OK means that the module has registered on CS domain service | ||
| − | --- | + | ---- |
* Use command '''AT+CGREG''' to check PS Service: | * Use command '''AT+CGREG''' to check PS Service: | ||
... | ... | ||
| Line 66: | Line 66: | ||
'''Note:''' OK means that the module has registered in UMTS/LTE network | '''Note:''' OK means that the module has registered in UMTS/LTE network | ||
| − | --- | + | ---- |
* Configure APN, user name, password and auth type by AT+QICSGP | * Configure APN, user name, password and auth type by AT+QICSGP | ||
... | ... | ||
| Line 74: | Line 74: | ||
<authentication> The authentication methods (0 – NONE; 1 – PAP; 2 – CHAP; 3-PAP or CHAP). | <authentication> The authentication methods (0 – NONE; 1 – PAP; 2 – CHAP; 3-PAP or CHAP). | ||
Example: AT+QICSGP=1,1,"APN_Name","","",1 | Example: AT+QICSGP=1,1,"APN_Name","","",1 | ||
| + | ... | ||
| + | ---- | ||
| + | * Use command '''AT+QIACT=<contextID>''' to activate a PDP context: | ||
| + | ... | ||
| + | AT+QIACT=1 | ||
| + | OK | ||
| + | ... | ||
| + | ---- | ||
| + | * Use command '''AT+QIACT?''' to query IP Address of the PDP context: | ||
| + | ... | ||
| + | AT+QIACT? | ||
| + | +QIACT: 1,1,1,"88.77.66.55" | ||
| + | OK | ||
... | ... | ||
| − | + | '''Note:''' try and activate a PDP context a few times. If failed, then reboot the module. | |
| − | + | ---- | |
| + | * Use command '''AT+QIOPEN''' to open connection: | ||
| + | ... | ||
| + | AT+QIOPEN | ||
| + | OK | ||
| + | ... | ||
| + | |||
| + | '''Note:''' if failed – deactivate PDP context - use command '''AT+QIDEACT=<context ID>''' to deactivate PDP context. | ||
| + | ---- | ||
| + | * Use command '''AT+QPING''' to ping a Remote Server: | ||
| + | ... | ||
| + | AT+QPING=1,"8.8.8.8" | ||
| + | OK | ||
| + | +QPING: 0,"8.8.8.8",32,54,255 | ||
| + | +QPING: 0,"8.8.8.8",32,30,255 | ||
| + | +QPING: 0,"8.8.8.8",32,35,255 | ||
| + | +QPING: 0,"8.8.8.8",32,34,255 | ||
| + | +QPING: 0,4,4,0,30,54,37 | ||
| + | ... | ||
| − | |||
| − | |||
| − | |||
| − | |||
| − | |||
| − | |||
| − | |||
| − | |||
*1 –The context ID. The range is 1-16; | *1 –The context ID. The range is 1-16; | ||
*8.8.8.8 - The host address in string type. The format is a dotted decimal IP address. | *8.8.8.8 - The host address in string type. The format is a dotted decimal IP address. | ||
Revision as of 22:24, 19 May 2020
Summary
This is a quick guide to help in the debugging process of a router if encounters issues with mobile data connection.
Preparation
- First, to establish a data connection only through mobile module on RUT, you need connect to router via CLI/SSH (use SSH software such as PuTTY client):
CLI/SSH username: root CLI/SSH password: <your router’s password>
- Connect to mobile module of the router:
... root@Teltonika:~# ifdown ppp root@Teltonika:~# /etc/init.d/gsmd stop root@Teltonika:~# microcom /dev/modem_cmd +QCSQ: "LTE",47,-75,166,-10 +QCSQ: "LTE",47,-75,161,-10 +CREG: 1,"008B","012CD17",7 ...
- 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:
... ATE1 OK at+qcsq=0 OK at+creg=0 OK ...
- Check communication (wait for the module to respond OK):
... AT OK ...
Debugging process
- If PIN is required, initialize modem with your PIN code:
... AT+CPIN="xxxx" ...
- Use command AT+CPIN to query SIM card status:
... AT+CPIN? +CPIN: READY ...
Note: Reboot the module if it fails to identify SIM
- Use command AT+CREG to check GSM connection:
... AT+CREG? +CREG: 0,1 OK ...
Note: OK means that the module has registered on CS domain service
- Use command AT+CGREG to check PS Service:
... AT+CGREG? +CGREG: 0,1 OK ...
Note: OK means that the module has registered in UMTS/LTE network
- Configure APN, user name, password and auth type by AT+QICSGP
... AT+QICSGP=<contextID>[,<context_type>,<APN>[,<username>,<password>)[,<authentication>]]] <context type> The protocol type (1 – IPV4; 2 – IPv6). <context id> The range is 1-16. <authentication> The authentication methods (0 – NONE; 1 – PAP; 2 – CHAP; 3-PAP or CHAP). Example: AT+QICSGP=1,1,"APN_Name","","",1 ...
- Use command AT+QIACT=<contextID> to activate a PDP context:
... AT+QIACT=1 OK ...
- Use command AT+QIACT? to query IP Address of the PDP context:
... AT+QIACT? +QIACT: 1,1,1,"88.77.66.55" OK ...
Note: try and activate a PDP context a few times. If failed, then reboot the module.
- Use command AT+QIOPEN to open connection:
... AT+QIOPEN OK ...
Note: if failed – deactivate PDP context - use command AT+QIDEACT=<context ID> to deactivate PDP context.
- Use command AT+QPING to ping a Remote Server:
... AT+QPING=1,"8.8.8.8" OK +QPING: 0,"8.8.8.8",32,54,255 +QPING: 0,"8.8.8.8",32,30,255 +QPING: 0,"8.8.8.8",32,35,255 +QPING: 0,"8.8.8.8",32,34,255 +QPING: 0,4,4,0,30,54,37 ...
- 1 –The context ID. The range is 1-16;
- 8.8.8.8 - The host address in string type. The format is a dotted decimal IP address.
Response: • If ping a remote server successfully, response: OK (means that the module works properly) • If there is any error, response: ERROR (means the problem is in the module)
Example fo the provided configuration:
