I applied through an employee referral. The process took 4 weeks. I interviewed at Radvision (New York, NY) in May 2014
Interview
Technically strenuous and lengthy interview process that spanned more than half a dozen interviews over a 4 week period. During which I was encouraged to fly at my own expense to a industry trade show to meet with key stake holders and hiring manager.
Interview questions [1]
Question 1
Describe IP Multimedia Subsystem components and function