Remote diagnosis system and method and printing machine having the system

摘要

A system and a method initiate a data transmission from a first computer to at least a second computer or approve access to the data on a first computer by a second computer. The computers are interconnected through a network connection. The first computer is protected against access through the network connection by a firewall. Another communication connection, which the first computer does not use for transmitting data, is provided for initiating the access authorization to the first computer or the data transmission from the first computer to at least the second computer. A printing machine is provided with the system.

主权项

1. A method for either initiating a data transmission from a first computer, which is a control computer for a printing machine, to at least a second computer or approving access to data on a first computer by a second computer, the computers being connected to one another through a first network connection, with a firewall protecting the first computer against access through the first network connection and a second communication connection from the first computer not transmitting data from the first computer, the second communication being a phone connection, the method comprising:
the second communication connection organizing a first step of initiating the data transmission from the first computer to at least the second computer by initiating access authorization to the first computer by the second computer, realized via the very first data transfer of an authorization request to the first computer, with the very first data transfer of an authorization request being a call from the second computer with a fixed phone number to the first computer; and subsequent to the first step, the first computer checking a phone number of an incoming phone call from the second communication connection; and including equipment selected from the group consisting of the second computer and another communication appliance provided for sending a call signal through the second communication connection for initiating on the first computer the access authorization or the data transmission from the first computer to at least the second computer.