Question suggested by my friend Gianina Froicu
First of all, if they call you, then they see potential in your CV and obviously want to investigate more.
If they call you just to schedule the interview, just keep the conversation short - obviously they have only 2-3 minutes to schedule you and that's it. They don't have time for the interview itself so it's not a good moment to shoot lots of questions at them. Not at all a good idea to start asking about the job responsibilities, company, team or salary. No way! Just write down the time and place or suggest another if their initial proposal doesn't work for you and that's it for now. Just make sure you know exactly where to go and you have understood the address correctly.
Then, how to sound interested but not desperate for the interview?
Just wait for them to address you questions first. It's really frustrating for a recruiter to start the interview, ask 1-2 questions and then get bombarded by the candidate with more questions than they have answered so far. Act normally, try to keep calm, answer their questions, ask a few yourself during the interview but don't turn the discussion into your questionnaire towards the recruiters.
If you have additional questions, ask them preferably at the end of the interview, better prepare a few from home that require short answers. Your questions show the recruiters that you are interested, but too many of them show that you are desperate. Make sure you ask them questions that really interest you and for which you can't find answers on their website.
Don't ask pompous questions like : what are your company's objectives for the next 5 years or what are your company's values just to look smart in front of the recruiters. I have been asked by a candidate these two questions and they annoyed me. The company's values were all over the walls and they could have read about them before or after the interview. About the objectives - the candidate asked this question just to look smart because she obviously didn't pay too much attention to my explanation and was eager to move on to another question. Also, she kept me at the interview for almost 30 minutes more because she just couldn't stop from asking questions. We were at the beginning and wanted to grow our image in the city so I didn't send her away, but this is an annoying practice and don't be surprised if the recruiter shuts you up and send you home nicely. They may have 8 more interviews for the day after you.
So, as a rule - answer briefly unless they ask for more details, ask questions during and at the end of the interview but keep them relevant and short.