Hi rugeleyboy, by call do you mean a tele sales call or an outside appointment made by a sales 'rep'?
Whichever you mean there are a few things that can make the difference that are basic sales principles. (I used to train sales staff).
1. Always make sure you have a set aim for the meeting or call. If you want to sell something there and then, that is your target, other businesses may just be setting a next action such as a return visit or demonstration. Without this simple step you sometimes forget the aim of the meeting so just carry on regardless.
2. Ensure that the person you are speaking to or seeing is the correct person, not just a person in the office who has no decision making or influence power.
3. Let the customer do the talking. Most business people enjoy talking, mainly about themselves, let them. It may give you plenty of signals as to what makes them tick. Once you understand this you can move from being a supplier to being a partner company.
4. When you do do the talking, ask questions. Dont assume that you know what the customer wants or needs. FIND OUT. Ask suitable questions, open questions to find information and closed questions to gain commitment to a solution or idea.
Hope these help, if not I will try and post more.
Good luck