In UCCX you have the simplest form of call analytics of customers in queue, avg hold time, longest hold time, agents logged in, how many calls presented, how many actually were answered, how many calls were abandoned. Things of that nature. If you have 5 agents and you find your average hold time is 30 mins you know you need to hire more people.
There are seperate applications that can get very intricate in what they report, Gives nice charts and graphs for the Managers to look at.
It gives you information so that you can run the call center better.