A fault that critically impairs the business and has no workaround solution.
For example, if your server has gone offline this would be a Priority 1.
A fault that seriously impairs the business and has no workaround solution. However, the business or user can continue in a restricted mode
An intermittent hardware/software problem. The business/user is still able to perform key tasks. A new user request would be classified as a Priority 3
The user can use another device as a temporary measure.
A fault for which there is no direct impact on business operations & the problem usually impacts a single user, or is required for the orderly maintenance of the network or client administration.
A request for a new service, device and software etc.