The telephone voice recorder is a state of the art device for recording telephone conversation. The conversation is recorded on a MMC card. The 32 bit processor digitizes the audio signal at a very fast and stores it on a MMC card. The MMC card has FAT 32 file system, so that MMC card can be read using any USB Card reader. The recorder has DTMF decoder, and Real time cock. Hence along with audio files, the telephone number, date, time and call duration are also recorded on MMC card. The recorder is powered by a 5 volt DC adapter. There is also provision for connecting Lithium ion battery, so that recorder can work for 8 hours without power.