There are many more people to face after work than the set meal you have to remember, so you should be prepared to meet all kinds of challenges. The technical content is not big, but also depends on a mouth and improvisation ability. Of course, your temper should be first-class. When users type your order, you must keep a standard smile and answer patiently. This happens to all salespeople. The biggest change after working in telecommunications for one year is that my temper is much better than before.