Task Manager
Task Manager is ticketing system to manage the tasks. All the users in your organisation can use it to log ticket to respective dept, so that thier problems can get resolve in timely manner. They can also see status of their request. Here you can make users aware of any major downtime and expected time to recover from that. With that you wont' get repeated calls/ tickets for major outages.
There are lot of task managers available today. We support etiquit, oneorzero.