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Try the below script in the AT Command Tester tool
//Script: at!gcfen.at //This AT command is used to enable/disable GCF testing mode in //the Sierra Wireless modules. //Enter the password AT!ENTERCND="1234" WAIT=1 //Query supported modes AT!GCFEN=? WIAT=1 //Query the current mode AT!GCFEN? //Enable GCF Test mode AT!GCFEN=0 WAIT=1 //Disable GCF Test mode
Output of the above script in the AT Command Tester tool
AT!ENTERCND="1234" OK Password protected commands are unlocked AT!GCFEN=? !GCFEN: (0-1) 0 - Disable GCF test mode 1 - Enable GCF test mode OK AT=1 ERROR AT!GCFEN? !GCFEN: 00 OK AT!GCFEN=0 OK AT!GCFEN=1 OK