You might be invited to a telephone interview for a number of reasons. Many employers will use telephone interviews as a way of sourcing the best candidates to then go on to a face to face interview. They may also be suggested due to convenience, if you live far away from the job location or you are abroad at the time.
You shouldn't think of the telephone interview as any different from a face to face interview. You still need to present your strengths and demonstrate why you are the best candidate for the job. Ensure you research the position and the company, as you would for any other interview.
The great thing about a telephone interview is that you can have as many notes around you as you like. There is some pressure to rush through answers as you don't want any silent gaps as you're thinking of the right answer. Although it might feel awkward make sure you give yourself enough time and pause if you need to think. You can simply say: "please can I have a few seconds to think about that question?" or ask them to repeat the question to save a bit of time. Try and keep your answers concise and short, it's easy to waffle on and on but if they want more details they will ask.
At the end of the interview make sure you know what the next stages are if they haven't been explained. You might also like to follow the interview with a thank you email to show your continued interest in the position.
Below is an example of the type of questions you should expect during your telephone interview.