This article describes how to build a Linux-based telephone answering machine using a low cost winmodem (softmodem) for the telephone interface. We describe how to install the drivers and libraries, and how to select and install the proper modem card. Our answering machine program is a couple of hundred lines of C code in a single file. If you’ve ever used a telephone you should have no trouble understanding the code.
The requirements for the project are:
– An Intel 537-based modem (softmodem)
– A PCI slot that does not share interrupts
Intel 537-based modems are readily available for less than $10. The driver we are going to use requires the Intel chip, so be sure you have the right modem before starting.
原始文章來自： A $10 Linux Answering Machine