SIMCOM 7080G模块AT+SHCONN命令执行失败求助

模块固件信息：

• APRev:1951B16SIM7080,B16V01
• QCN:SIM7080G_P1.03_20201226
• IMEI:860016041830931

已严格遵循《SIM7070_SIM7080_SIM7090 Series_HTTP(S)_Application Note_V1.02》中的HTTP操作流程配置，IP地址、运营商及PDP连接均显示正常，但执行AT+SHCONN命令时始终返回ERROR。已更换不同SIM卡，并使用自研C++程序及ATCommandTester工具测试，问题仍存在。

以下是PuTTY调试日志：

=~=~=~=~=~=~=~=~=~=~=~= PuTTY log 2023.11.08 20:29:17 =~=~=~=~=~=~=~=~=~=~=~=
SIMCOM 7080G AT CMD Test -> SendDataV6-em-7080-328
AT+CPIN?
AT+CPIN?

+CPIN: READY

OK

Debug
AT+CSQ
AT+CSQ

+CSQ: 15,99

OK

Debug
AT+CGATT?
AT+CGATT?

+CGATT: 1

OK

Debug
AT+COPS?
AT+COPS?

+COPS: 0,0,"Claro AR",7

OK

Debug
AT+CGNAPN
AT+CGNAPN

+CGNAPN: 1,"em"

OK

Debug
AT+CNCFG=0,1,"em"
AT+CNCFG=0,1,"em"

OK

Debug
AT+CNACT=0,1
AT+CNACT=0,1

OK

+APP PDP: 0,ACTIVE

Debug
AT+CNACT?
AT+CNACT?

+CNACT: 0,1,"10.189.69.227"
+CNACT: 1,0,"0.0.0.0"
Debug
AT+CSQ
AT+CSQ

+CSQ: 14,99

OK

Debug
4G HTTP Setup End!
AT+SHCONF="URL","http://nutritronix.com/selectV201W.php"
AT+SHCONF="URL","http://nutritronix.com/selectV201W.php"

OK

Debug
AT+SHCONF="BODYLEN",1024
AT+SHCONF="BODYLEN",1024

OK

Debug
AT+SHCONF="HEADERLEN",350
AT+SHCONF="HEADERLEN",350

OK

Debug
AT+SHCONN
AT+SHCONN

ERROR

Debug
AT+SHSTATE?
AT+SHSTATE?

+SHSTATE: 0

OK

Debug
AT+SHCHEAD
AT+SHCHEAD

ERROR

Debug
AT+SHAHEAD="Content-Type","application/x-www-form-urlencoded"
AT+SHAHEAD="Content-Type","application/x-www-form-urlencoded"

Debug
AT+SHAHEAD="Cache-control","no-cache"
AT+SHAHEAD="Cache-control","no-cache"

ERROR

Debug
AT+SHAHEAD="Connection","keep-alive"
AT+SHAHEAD="Connection","keep-alive"

ERROR

Debug
AT+SHAHEAD="Accept","*/*"
AT+SHAHEAD="Accept","*/*"

ERROR

Debug
AT+SHBOD=40,10000>api_key=tPmAT5Ab3j7F9&device#=BC94
AT+SHBOD=40,10000>api_key=tPmAT5Ab3j7F9&device#=BC94

ERROR

Debug
AT+SHREQ="/post",3
AT+SHREQ="/post",3

ERROR

Debug
AT+SHREAD=0,38
AT+SHREAD=0,38

ERROR

Debug
AT+SHDISC
AT+SHDISC

ERROR

内容的提问来源于stack exchange，提问作者Horacio