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M35模块呼叫这里返回no carrier是什么原因

OK
2023-02-27 19:15:14 TX:[AT+CLCC]
2023-02-27 19:15:14 +CLCC: 1,0,2,0,0,“0333065321”,129,""

OK
2023-02-27 19:15:15 TX:[AT+CLCC]
2023-02-27 19:15:15 +CLCC: 1,0,2,0,0,“0333065321”,129,""

OK
2023-02-27 19:15:15 +CSQN: 22, 0
2023-02-27 19:15:16 TX:[AT+CLCC]
2023-02-27 19:15:16 +CLCC: 1,0,2,0,0,“0333065321”,129,""

OK
2023-02-27 19:15:16 NO CARRIER
2023-02-27 19:15:21 +CSQN: 31, 0
2023-02-27 19:15:45 +CSQN: 30, 0
2023-02-27 19:16:28 +CSQN: 31, 0
2023-02-27 19:16:53 +CSQN: 30, 0
2023-02-27 19:17:59 +CSQN: 31, 0
2023-02-27 19:18:04 +CSQN: 30, 0
2023-02-27 19:19:34 +CREG: 1,“2D29”,“2B0F”

还有呼叫结束后也是返回了no carrier 是什么意思呢?
2023-02-27 19:26:38 OK
2023-02-27 19:26:38 +CSQN: 24, 0
2023-02-27 19:26:39 TX:[AT+CLCC]
2023-02-27 19:26:39 +CLCC: 1,0,0,0,0,“0978240222”,129,""

OK
2023-02-27 19:26:40 TX:[AT+CLCC]
2023-02-27 19:26:40 +CLCC: 1,0,0,0,0,“0978240222”,129,""

OK
2023-02-27 19:26:41 TX:[AT+CLCC]
2023-02-27 19:26:41 +CLCC: 1,0,0,0,0,“0978240222”,129,""
2023-02-27 19:26:41 OK
2023-02-27 19:26:41 NO CARRIER
2023-02-27 19:26:41 TX:[AT+CLCC]
2023-02-27 19:26:41 OK
2023-02-27 19:26:41 TX:[AT+CSQ]
2023-02-27 19:26:41 +CSQ: 24,0

OK
2023-02-27 19:26:46 +CSQN: 30, 0
2023-02-27 19:28:01 +CSQN: 29, 0
2023-02-27 19:28:05 +CSQN: 24, 0
2023-02-27 19:28:06 +CREG: 1,“2D29”,“2404”
2023-02-27 19:28:11 +CSQN: 30, 0
2023-02-27 19:29:13 +CSQN: 29, 0
2023-02-27 19:29:31 +CSQN: 30, 0
2023-02-27 19:29:41 +CSQN: 29, 0
2023-02-27 19:29:46 +CSQN: 30, 0
2023-02-27 19:29:50 +CSQN: 31, 0
2023-02-27 19:29:55 +CSQN: 30, 0
2023-02-27 19:30:02 +CREG: 1,“2D29”,“2B0F”

还有这里的返回的no carrier是啥原因?
2023-02-27 20:10:22 TX:[AT+CLCC]
2023-02-27 20:10:22 +CLCC: 1,0,3,0,0,“0378994567”,129,""

OK
2023-02-27 20:10:22 +CSQN: 24, 0
2023-02-27 20:10:23 TX:[AT+CLCC]
2023-02-27 20:10:23 +CLCC: 1,0,3,0,0,“0378994567”,129,""

OK
2023-02-27 20:10:24 TX:[AT+CLCC]
2023-02-27 20:10:24 +CLCC: 1,0,3,0,0,“0378994567”,129,""

OK
2023-02-27 20:10:25 NO CARRIER
2023-02-27 20:10:31 +CSQN: 30, 0
2023-02-27 20:12:40 +CSQN: 31, 0
2023-02-27 20:12:50 +CSQN: 30, 0
2023-02-27 20:12:54 +CSQN: 28, 0
2023-02-27 20:12:59 +CSQN: 29, 0
2023-02-27 20:13:04 +CSQN: 30, 0

模块版本 M35FAR02A10