A.
Before you pick up the phone, you'd better take some time to reflect on the purpose and topic of the call.
B.
When answering a business phone call, you'd better to pick up the phone immediately when it rings.
C.
If it is necessary to transfer a call, inform the person before doing so, to show respect.
D.
To be efficient on a phone, you'd better go into the point of your calling after a brief greeting.