There were no unexpected questions during my interview, but I expect that is more because of my tenure with the company. Also I had worked extensively with people in that organization and the hiring manager was able to ask around about me before the interview. Your mileage may vary. Again, it depends on how much knowledge you have of Avaya systems. If you have none, it isn't much of and issue. Expect more questions around how you would handle certain customer scenarios and generic telecom and networking questions.
