Congratulations on getting that interview! These days it takes hard work to get even that far in the search process. That is unless you have expertise in some esoteric programming stream processing framework like Storm, S4 or Samza. Huh?
Anyway, back to the issue at hand. First, consider a phone interview pretty much like a face-to-face meeting. Prepare in detail just as you would normally. Dress the same too. Create a private space without noise or distraction to take the call, one where you know you will get the best phone reception. Be ready a few minutes ahead of time and operating on all cylinders – be at your best.
The nice thing about phone interviews (that are not Skyped) is that you can have some notes in front of you, but be very careful not to have too much. You don’t want to be in the position of making noise by shuffling papers or taking too much time to answer because you’re searching through your notes to find it.
Use your computer to help you, one with a big enough screen to be useful. Not your phone; it’s not big enough. I highly recommend that you bring up the person’s LinkedIn profile so that you can talk to the person directly. It’s not ideal in that the facial expression is fixed and you won’t be able to read body language, but I believe you can still tell a great deal just from a photograph.
And don’t forget to prepare ahead. You can download a free copy of my proven Interview Prep Guide from the Resources page of my web site. Good luck!