this menu allows you to enable or disable the call-in and call-out functions of each serial port in any combination.

    if the system is running in partition mode, call-out is disabled.

   

    call-in and ring indicate power-on cannot be enabled at the same time. if ring-indicate power-on is already enabled and you try to enable call-in, a message prompts you for confirmation. refer to the message displayed on the screen.