Telephone Etiquette

Everybody knows how to use the telephone, but very few people know how to use it to their best advantage.
When you speak to someone on the telephone, vocal quality counts for 70 percent of the initial impression you make, and the words spoken count for 30 percent. Listeners base their opinions of you not only on what you say but also how you say it and the tone of your voice.
Speak unto others as you would have them speak unto you. It’s up to you, the speaker, to make sure that the listener gets the message loud (but not too loud) and clear. The person on the other end shouldn’t have to work hard to hear you and understand what you are saying.
When using the telephone, use your mouth for speaking only. Eschew chewing, eating, or drinking.