They are basically having three interview round. first is written test test which changes every year before amdocs written test was managed by amcat but now I heard it is changed. Once you clear written test you will be asked to come for onsite interview which is very simple. and in last HR inetrview

Post clearing the online aptitude cum technical test , the HR calls at 8 pm interview next day without doing any background check on me ( Interview location Pune ,my then current Location Mumbai). I still manage to reach clear a rounds ( 4 rounds) with clear mentioning of my expectation for compensation and get an email for my selection and required documents.After 2-3 HR calls and says " So, x is your expectations and you wont settle for 20 percent less than x, right .Ok" .She hangs up abruptly.I follow up post a day over email .Get position closed email after a week.Worst interview experience ever.As i was asked to come for f2f at such a short notice I spent over 3 k over a one day Pune trip . Useless as hell.