command mode



  • noun the operating mode of a modem in which the user or communications software can send instructions to the modem that it will then try and execute. The standard method of switching a modem to command mode is to type or send it the three characters ‘+++’. The modem will reply with an ‘OK’ message and is ready to execute configuration or other commands.


  • A mode of operation in which a computer or peripheral, such as a modem, accepts commands.