Your voice is most critical tool in tele-calling so use it as your advantage.
Always be pleasant and your smile should reflect from the phone when you speak.
Speak clearly and don't get nervous. Be friendly and address the client by their name.
Excellent communication skills.
Creative thinking skills.
The patience and ability to engage customers in conversation.
Good sales ability.
Working knowledge of relevant computer software.
Excellent interpersonal and problem solving skills.