I applied through university. The process took 1 day. I interviewed at Tata Communications (Mumbai) in Sept 2018
Interview
Pen and paper aptitude test on aptitude and technical.Technical based on ccna and simple telecommunication subject mcqs. 50% cutoff in each.
After qualifying for test GD was conducted topic to be chosen by us.
4 people were selected out of 8 in group.
Technical and HR are taken together.Technical based on project done.