Where is it written that if a non-certified person gets on Cisco equipment and takes out a network from operating, or causes the equipment to stop working correctly it voids the warranty? I am asking this because one of our clients has brought in a desktop support team. That is all and well, but none of them hold any networking certs, or networking experience at all. So my company is nervous about this and is affraid that the 3rd party is going to do something to take the equipment out of warranty. We obviously want to protect our work and the running equipment. Any ideas?