It depends on the policy of the institute in which you are applying. Most of the institutes are open to candidates from various academic backgrounds and even non-engineers are given extra points for academic diversity. Hence you will be eligible for those institutions.

Telecommunications Management focuses on developing the skills and knowledge required in telecommunications industry however most of the subjects are same as that in a general MBA course.

Some of the good institutions offering an MBA in telecommunications management are DMS IIT Delhi, SITM, Amity University etc.