Modem Spy 

Modem spy records all phone calls, records from microphone, plays back recorded mesages via phone line or sound card. Has built-in software automatic gain control. Detects and logs Caller ID
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EzPhone Recorder Pro 

This program runs on MS Windows and uses your voice modem to automatically record both incoming and outgoing telephone calls. It supports caller id, email notification, unlimited recording length, legal announcement and a lot more. Free try it now.
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