Comment by pm215

For a long time in the dialup era my "answering machine" was a US Robotics voice-capable modem attached to my home Linux PC, with some scripts to make it pick up after N rings, play a message, record whatever the caller said, and then email me the resulting sound file. The Linux support for it included DTMF tone recognition, so I added in a quick hack so that if I sent it the right pin code during the "please leave a message" part it would wait for me to hang up and then dial my ISP, so I could ssh in to it from wherever I was...