Arduino with SIM7600 reporting Error 715 (Handshake Error)

I have same issue when I post using URL I got 715 response code why?

this issue is solved right?
I have same situation, can you share process to fix it?

Net indicator is blinking. I tried the provided commands, as proposed, after getting the response 715:

AT+CSQ  :  +CSQ: 25,99 

AT+CPIN?  :  +CPIN: READY 

AT+COPS?  :  +COPS: 0,0,"o2 - de",7 

AT+CREG?  :  +CREG: 0,5 

Sending AT+CRESET  leads to restart, then it is working again, but after some time the issue is there again.

The board is supplied via the USB interface, which is connected to the laptop, Arduino is connected with another cable to the laptop.

Hi!

1. During this process, do you pay attention to the status of the network indicator? If the Net indicator blinks blue quickly (once every 1s), it may be caused by a disconnection from the network.

2. You can use AT commands to get the card and module status.

AT+CSQ Network signal quality query, return signal value

AT+CPIN? Query the status of the SIM card and return READY, indicating that the SIM card can be recognized normally

AT+COPS? Query the current operator and the operator information will be returned after normal networking

AT+CREG? Query network registration status

3. You can also restart the module in the software.

AT+CRESET Reset the module (the module will restart and automatically register with the network)

Hi, what power supply are you using?