Sometimes it is useful to record telephone conversation with computer soundcard. To do that you need to build a telephone conversation recording adapter which is designed to be connected between telephone line and computer. After you have made this connection you can use any sound recording application to record telephone conversations to your hard disk.

The adapter has two functions: it connects the audio from telephone line to recorder input at correct level and it isolates the recorder electrically from telephone line. The isolation is very important part of the adapter, because connecting soundcard directly to the telephone line is against telephone regulations, causes all kinds of noises to telephone line and will damage your recorder.

This Phone Recorder Adapter can record telephone conversation into computer with no noise (or least non-speech sounds signal).By the control of record software, phone speech sounds could be gotten recording clearly.