TRM 250 network timeout

NETWORKING SOLUTIONS
1

I have 2 trm250 and have problem with both but both diferent.

First isue with when try to send a sms i get this

AT
OK
AT+CFUN=1
OK
AT+CMGF=1
OK
at+cmgs="+31612345678"
> bas is top
+CMS ERROR: 332

why a network timeout what to do to debug this ?

3

Hello,

Apologies for a delayed response. Could you kindly confirm if you’re still facing the same issue with SMS timeouts, as described earlier?

When attempting to send the SMS, could you confirm if you pressed Ctrl+Z after inputting the message text to send it? Additionally, please check the following:

  1. Is the module properly registered on the network? You can check this by running the command AT+CREG?.
  2. Can you check the signal strength using AT+CSQ to ensure the signal is strong enough for sending SMS?
  3. Does your carrier require a custom APN configuration for SMS? If so, have you set it correctly?
  4. Have you tried replacing the “+” symbol with “0” in the phone number (e.g., 0031612345678)?
  5. Have you tried testing SMS sending with different operator’s SIM?

Please let me know if any of the above suggestions resolve the issue or if you need further assistance.

Best regards,