If you have a voice modem installed in your PC, you can use it to for call recording. Connect your telephone to your modem, dial the number as usually and pressing the record button, whole conversation will be saved to your hard disk. You can set it in auto recording mode where all of your incoming calls will be recorded automatically with no intervention.  You can select the voice compression your modem supports, such as PCM-8bit, PCM-16bit, unsigned PCM-8bit, u-law, a-law, IMA ADPCM, 4-ADPCM
   You can select the compression format of the wav files saved to your hard disk, such as uncompressed PCM, ACELP, a-law, u-law, DSP truespeech, GSM 6.10, IMA ADPCM, Microsoft ADPCM, G723.1, WMA, VOX, BTV digital, Creative fastspeech, MP3 and many others your system supports. Selecting the right format you can have compression ratio about 2.81Mb/hour. 
Advanced Phone recorder can be set to launch as a service when Windows starts-up. Every recorded call is saved in a database with a date, time, duration stamp and user comment.  It detects, and logs Caller ID.
   You can keep lists of calls according to your needs, e.g. personal, business, sales, orders calls etc. Mass actions, delete, copy, move.
Monitor the signal being recorded or played.
   Post process your wav files. Adjust digitally the recording level. Apply voice equalization between calling and called party.
 When the volume level of one of the parties is much lower you can increase it with a click of a button.

Connection interfaces

Plug one of the telephone cables supplied into the socket on the back of the modem named "LINE". 

Insert the other end of the cable into the telephone wall socket. 

Plug the cable of the phone into the socket on the back of the modem named "PHONE"