nervous when cold calling?

Do a trail, note down common objections that may raise from the other end.Put your self in the other end and think from their shoes, and note down a script to talk with them. This will serve as a framework to start talking, later make necessary changes according to situation.

Few suggestions :

1) Calls will be attended by receptionist or junior level employees. Use certain jargon which they dont understand and ask for seniors.

2)Once the seniors get on line, dont waste time, jump immediately into to most important part of your discussion and generate interest. Now any two thing will happen, either they will say no or yes. If it is no, ask politely the reason for that. If they say some genuine concern it is an opportunity, if you can solve that issue , then it is your prospect.

If they say any nonsense reason, then they are avoiding you. Say thank you and move on to another customer. Even if you spend some time on that customer you will not get anything back.