Too Long; Didn't Read
You'd think these are time savers, not time killers. Well, they're both.
When you get onto the phone, do you identify yourself straight away and get to the point or do you play 'who is speaking' games? That makes a big difference.
Be brief while on the phone. It's extremely exasperating when someone is trying to reach you and is confronted with a busy tone for a long time. When you’re in a serious discussion with people who are beside you, make sure you turn off your cell phone.
It's a huge time waster when you get a call and have to put your colleagues on standby while you chat and giggle over your phone. If you do have to take a call, be brief.