That is a difficult question. My son plans on applying to Medical School. If he doesn't get accepted, for whatever reason, his backup plans are Pilot and going to Graduate school while waiting for his UPT slot to come up.
As for telecommunication; for an officer, that is both the "telecommunications and Information" field. Which is very broad. Very techie. Degrees are usually in computer science, information technology, electronic engineering, and similar jobs. The "IT" side of the job, as far as duties go, are usually at the more established bases. Yes, there are deployments to places like the sandbox, but it's usually fixed bases. On the telecommunications side however, S/He could get stationed in some pretty unique assignments. Everything from space command and control, to Air Force One, to regular bases, to tactical communications, and everything imaginable in between. In other words, it's definitely a diverse career path. The positive is: Jobs on the outside are very lucrative. 6 figure jobs are not hard to come by on the outside world with the right degree. I have degrees in Electronics and another in Computer science. And I've never spent more than 2 weeks unemployed. (And that was by choice). But in the military, in 21 years, I was permanently at 9 bases, tdy to 11 countries and 15 bases. Although, I never went to Asia, I was on every other continent except Antarctica.
But recommending a career is like recommending a firearm or an automobile. It really has to fit the person who is going to have it. My commander, I was her 1st Sergeant, always wondered why I didn't go OTS or ROTC when I had the chance. It's hard to explain. Once in a life time, you find a job that you really enjoy. It becomes more than a job. It's more than a career. And that's how mine was. Yes, it was sometimes hard on the family some times with me gone a lot. And I really did feel guilty, because I LOVED doing what I did in all these places. But it's got to be up to your son to choose what's best for him. I spent a lot of years working with young people helping them get to the academy, ROTC, OTS, and enlisting; as well as civilian colleges and universities. Some people just have a certain attraction for different things. The ALO's I work with know this all too well. There are some people that you know will excel in ROTC, but not at the academy. Then there's some that need the full time discipline of the academy. There is no only one way. So personally, I wouldn't recommend anything to your son. I'd show him the link I provided, and let him see what interests him.
But realize, that no matter what he says he wants.... He will change his mind dozens of times in the first 2 years before he has to really commit to a path. Best of luck. Mike.....