Help Center> IoT Device Access> FAQs> Device Integration> Why Did the System Return an Error After the AT+CUFN=1 Command Was Executed?
Why Did the System Return an Error After the AT+CUFN=1 Command Was Executed?
If an error is returned, the modem is not ready for switching. Do not switch between CFUN=1 and CFUN=0 too fast. It takes time for the modem to switch.
Parent topic: Device Integration
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