Preferred system: jcblockAT, Raspberry Pi, ATian modem

[Walter]

If you have been following this project for awhile you will know that I had some considerable trouble with itermittent operation of the jcblockAT program. At that time I had the ATian modem mounted on a board with the modem USB cable "pinched" tight. Later I changed to a second ATian modem that was unmounted. That system has run continuously without a fault for over two months. Therefore the problem was either: 1) a faulty first modem (unlikely), or 2) a "pinched" USB cable (likely). Lesson learned: don't "pinch" the USB cable! Since this system: ATian modem, RPi, jcblockAT implements all features of the program reliably, It is now the preferred design.

The reason it is important for the ATian modem to work is that it is the only (affordable, ~$14) one that I have found that detects touchtone presses in hardware. A *-key press is used to signal the program to automatically add a record for the current call to the blacklist. This has been found to be very handy. Previous designs (e.g., jcblock.c) used a software technique to detect *-key presses, which was not reliable.

[Anonymous]