The ATI response message for the NB-IoT in use is as follows,
Quectel
BC95-G
Revision:BC95GJBR02A03_LGU
Looking for a communication connection error with the backend server programmer.
Before I check the server communication, I would like to check with BC95-G first.
The current situation is that BC95-G has successfully connected TCP, but the server has never connected it.
BC95-G received a successful socket connection response, but is there any case that the socket is not connected?
TCP connection log
[2023-11-21 08:53:33.326] modemTx->AT+NSOCO=1,12.34.567.116,5000
[2023-11-21 08:53:33.775]
[2023-11-21 08:53:33.775] OK
[2023-11-21 08:53:33.786]
[2023-11-21 08:53:34.295]
[2023-11-21 08:53:34.295] modemTx->AT+NSOSD=1,31,AAAAAAAAAAAAAA70565206511A6300000005000000001E001B003100002604,0x100,101
[2023-11-21 08:53:34.785]
[2023-11-21 08:53:34.805] 1,31
[2023-11-21 08:53:34.805]
[2023-11-21 08:53:34.805] OK
[2023-11-21 08:53:34.805]
[2023-11-21 08:53:52.355]
[2023-11-21 08:53:52.355] +NSOSTR:1,101,0
[2023-11-21 08:53:52.355]
[2023-11-21 08:53:52.355] +NSOCLI: 1
[2023-11-21 08:53:52.355]
[2023-11-21 08:53:52.355] [D]si_socket_send2server.c, 773: SI_RECV_WAIT_TIMEOUT:4[sec]
[2023-11-21 08:53:53.345] [D]si_socket_send2server.c, 773: SI_RECV_WAIT_TIMEOUT:2[sec]
[2023-11-21 08:53:54.365] [D]si_socket_send2server.c, 773: SI_RECV_WAIT_TIMEOUT:1[sec]
[2023-11-21 08:53:55.374] [D]si_socket_send2server.c, 773: SI_RECV_WAIT_TIMEOUT:0[sec]
[2023-11-21 08:53:56.363] [D]si_socket_send2server.c, 877: SOCKET_CLOSE start
[2023-11-21 08:53:56.473]
[2023-11-21 08:53:56.473] modemTx->AT+NSOCL=1
[2023-11-21 08:53:56.933]
[2023-11-21 08:53:56.933] ERROR