Do it where you are most comfortable, probably best from home. Set yourself up the way you are most comfortable and relaxed. I do phone interviews in my PJs with a cup of coffee and water nearby...that may not work for you, but it helps me be as relaxed as possible. I do set up at a desk so feel engaged in the "work" I'm conducting. I love this aspect of phone interviews.
Write down some questions you have about the job in advance of the interview, I usually ask my questions at the end (be it logistics, work duties, ?s about the ideal person the employer is looking for). Remember you may be moving for this job so it's nearly as important for you to interview your potential colleagues as it is for them to interview you.
If you want the job, tell them as much and tell them why you want it.
Very important, keep paper and pen nearby to take notes. If you don't completely comprehend the question don't be afraid to ask them to elaborate.
Use a land line if you can, call quality is better and you don't want this call to get dropped!! When the interview starts ask them for a number to call in case your line goes bad for any unknown reason.
To help with your nerves, remember that you are the best expert on YOU your skills and your own career goals. If you're honest about what you know and what skills you can bring to the table you shouldn't be nervous. Don't expect to know everything about the job, everyone has something to learn as they move up positions. They already found something they liked on your application so you're past the most difficult step. They are interviewing you to see if you are a good fit for the position, don't take it personally if you aren't the best fit.
Finally, go back over the position announcement and KSA related questions...that's your study sheet. Prepare for questions that expand on the basic principles covered in those questions!
Again, relax and congratulate yourself on getting to the interview, getting that far is the most important step!
