移远的工作人员好，使用 EC800M-CN 开发板调试时，移动的卡可以发送短信，但使用电信的卡就一直 +CMS ERROR: 332 。电信卡已开通 volte 功能，且确认过电信卡无欠费，可以正常收发短信，上网，拨打电话。能帮忙确认下是否是 EC800M-CN 模组本身的问题吗 ？如果是模组不支持 volte 功能，能推荐个支持的模组吗（最好是支持 CAT 1 即可，数据量不大，用不到 CAT 4）？谢谢哈~~~
[21:25:36.934]发→◇AT
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[21:25:36.939]收←◆AT
OK
[21:25:40.744]发→◇ATI
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[21:25:40.744]收←◆ATI
Quectel
EC800M
Revision: EC800MCNGAR06A05M08
OK
[21:25:50.758]发→◇AT+CPIN?
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[21:25:50.761]收←◆AT+CPIN?
+CPIN: READY
OK
[21:25:58.393]发→◇AT+QICSGP=1,1,"CTNET","","",1
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[21:25:58.395]收←◆AT+QICSGP=1,1,"CTNET","","",1
OK
[21:26:04.034]发→◇AT+QIACT=1
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[21:26:04.034]收←◆AT+QIACT=1
OK
[21:26:05.375]发→◇AT+QIACT?
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[21:26:05.375]收←◆AT+QIACT?
+QIACT: 1,1,1,"10.73.74.51"
OK
[21:26:12.591]发→◇AT+CMGF=1
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[21:26:12.591]收←◆AT+CMGF=1
OK
[21:26:14.984]发→◇AT+CSCS="GSM"
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[21:26:14.985]收←◆AT+CSCS="GSM"
OK
[21:26:23.413]发→◇AT+CMGS="1825258xxxx"
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[21:26:23.415]收←◆AT+CMGS="1825258xxxx"
>
[21:26:28.595]发→◇01□
[21:26:28.600]收←◆01
+CMS ERROR: 332