Their is a friend of mine who design costumes for a small show and few years ago it became a big hit due to that it got huge success that that show won heart of a fashionista icon and also a backer due to which my friend got a chance to show her costumes to a big Broadway show but there the show was a big flop. 

When i read the bad news i called her and asked what was the reason for her flop show then she told me that actor, actresses were not trained by the director to perform at a new environment. The actor silly movement and disgusting facial expressions and their small gesture made them lost in that big show. she told me that they fail to entertain the new audiences and on that day i learnt a big advice that whenever you are talking to someone on call you must consider your way of taking, suppose if you are on a video call then a slight eyebrow raise and frowing would have said alot but on a call it is meaningless just becuase your listener could not see your raised eyebrows you have to say that you are very surprised to know that wow. Your body language and your expressions are big part of a conversation and when people don't see that they can get you into wrong impression to carry yourself into good manner you have to translate your expressions into voice or sound. there are studies which shows that we loose 30 percent of our energy on phone so we beter have to use it rationally. so when you meet a new person you shake hand and you can see her face expressions and both of you smile but how you would behave in a same manner if you are on  a call with the same person there u can't raise your eyebrows you have to say in words that you are surprised. you have to substitute your emotions into words to let her know that whether you agree or disagree with them and you have to use her name in order to substitute the eye contact. you will have to say i hear you, huh, say intresting, tell me more and what a surprise. if he said something wise then you must say that's was wise of you and you are no dummy. try saying yiu are so funny