had to fill out technical forms before the interview which I had no knowledge of but was then told it was just to screen your experience. Very technical and they seemed to want perfection, didnt get the role as I said I wasnt sure of something but didnt follow it up with but I could learn

Called by HR, usual discussion. Then at the technical part, I had basic telecom interview questions. I was asked about OSI Model, TCP/IP, 2G/3G/4G architectures and IPv4 and IPv6. I would recommend learning very good the telecom architectures and be open.