Telecommunications technology continues to change constantly. That means you can expect to take classes throughout your career to keep your skills up-to-date. The good news is that often your employer will pay for these classes.
You need good communications skills to succeed in this field. A writing course, and probably a public speaking course, should be part of your program even if they are not required.
A four-year program usually includes several business courses. If you are in a two-year program, consider taking some. They will help you communicate with management. In addition, the skills you learn in these courses may later help you make a career shift into management.