You won’t get great sounding recordings by recording telephone calls with an iPod, but it is possible. In an ideal telephone recording scenario, you want independent control over each person on the call, so that if the person you call is too quiet, you can turn their volume up or your volume down. You won’t get independent volume control for both sides of the call when recording a telephone conversation on your iPod, but you will get a recording that you can later use as part of a podcast or transcribed interview.
To record phone calls on your iPod, you need two things in addition to the iPod. You need a microphone add-on for the iPod and you need an adapter to pass the phone audio to the microphone.
One tip for this recording method is after placing the call, ask the person you are calling to be silent for about 15 seconds to record a sample of the noise on the line. You can use this section of silence to clean up the recording in audio editing software.