ComReady()

         Determines if the system is ready to transmit

    Syntax:

         ComReady() -> lReady

    Description:

         Determines if the system is ready to transmit. This depends on the
         interruptions manager will be active and the transmission spooler
         won't be full.

    Return:

         A logic value indicating if system is ready to transmit

    Example:

         If ComReady()
           Warning( "System Ok" )
         EndIf