In my case, I got a call from Infosys BPO stating they had a requirement for an international telecom giant. They explained the roles and responsibilities and the skills that are expected. I was called to the interview center for an aptitude test, on clearing that, there was an interview with the process specialist. it was more of a general nature of interview where I was asked about the basics of networking, telecommunications etc. And an HR round. Not much scope for negotiations.