Comment by Buttons840

I was building a system to call patients and remind them of doctors appointments. This was hooked to a T1 I think, with dozens of phone lines. Naturally, we tested this with our own phone numbers. One evening I get a call reminding me of a fake appointment, and while I listen to the reminder and enjoy knowing I built this... I get a call waiting notification (and you know the rest)

... (but I'll say the rest anyway). The system was using dozens of phone lines to call me and leaving multiple voice messages simultaneously. I considered myself reminded.