You can definitely switch your sectors as per your choices.



All you need to learn is latest Technology Development jn Telecom and Technology sector by subscription to ET Telecom news and RCR wirless wchich will give you latest and hottest trends in network orchestration.



Moreover, a certificate course jnto Fundamentals of Networking by MTNL can come in handy.



You can also take up Network maintainence course online and add on your resume. Some best course providers like Coursera and Edx have list of great Technical courses which can help you sharpen yhe skills.





Applyibg to jobs in Telecom sector and taking Internship to gain hands on experience is recommended before you take up full time Network Manangement opportunities.



You can also search for free YouTube videos on Network deployment by Ericsson and Huawei which will come helpful for interviews.



All the best.