Vantaggi
It's probably a good place to pass through and gain experience. For young, college grads, I'd say go for it -- for a couple of years, and then move on. Avaya will give a person new to the business world, a taste of corporate America at its worst. Their next move will no doubt be better!
Svantaggi
Senior Management treats mid and low level managers very poorly -- yelling, intimidation -- it's horrible. Avaya has a great number of people who are awesome performers, who work a ridiculous number of hours, who have been loyal, and who want to help the company be successful. Unfortunately, those people are leaving, or will be because they refuse to continue to be treated the way Avaya Senior Management treats their employees. It's a sin.