Which of the following are NOT correct when contacting Cisco TAC?

The assertion that all tickets must be opened online is not accurate when it comes to contacting Cisco TAC (Technical Assistance Center). Cisco allows for flexibility in the method of ticket submission. While online submission is a common and often preferred method for efficiency and tracking purposes, Cisco TAC also provides options for opening tickets via phone calls and other means, especially in urgent situations where immediate assistance is needed.

This flexibility ensures that all users, including those who may not have reliable internet access at the time or who prefer to communicate verbally, can still receive support. Therefore, saying that all tickets must be opened online does not reflect the full range of contact methods that Cisco TAC offers.

The other aspects outlined, such as the determination of severity by the partner/customer, Cisco's validation of that severity, and the involvement of the end user in assigning severity levels, are standard protocols that reflect responsible incident management. These elements ensure that the urgency and impact of support requests are appropriately assessed and prioritized.