BG96 - Intermittent EOF on AT+COPS=? command

When issuing a cell scan command (AT+COPS=?) we sometimes get an EOF on the serial port. When we subsequently reconnect, the results of the command are available for reading. The EOF is occurring well within the 180s timeout, so that’s not the cause.

Any ideas on why this happens and what we can do to prevent it?

it is the first time that , customer report this issue .

it seems caused by serial tools or host OS, Do you sent this AT under linux ?

pls change to windows or ubuntu host ,and do more test .