GSM USB mode: Ctrl+Z sends entire screen content

Serial port terminal application send out all the strings on the screen after pressing Ctrl+Z, when trying to send message in GSM USB mode.
2025-07-24 16:04:50
Tonny12138
It is possible to send Ctrl characters when the terminal is set to Line Mode. We can choose the Line Mode in options-terminal-terminal mode, or we can send the Ctrl character though sending string box of Coolterm in hexadecimal format. Please refer to Ways to send Ctrl +Z in Coolterm.
And restart the serial port terminal application always works for other troubles.
