Quote:
Thinking back to the old empeg towers, I remember an IP Doorbell being discussed.


The one in empeg towers consisted of a crappy old Linux PC. The doorbell was connected to the serial port, IIRC.

When the serial line was taken high (or low, whatever), it broadcasted a UDP packet to the local subnet. Any interested parties could then do something.

We had one app running on one of the Linux boxes in the server rack which would play a .WAV file out through the speakers. There was another Linux box like this downstairs in the comfy room.

Mike also put together a Windows tray app that would play a noise and pop up a bubble tooltip when the doorbell rang.
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-- roger