The Connections Museum in Seattle released a new video today called "How does MF Signalling work".
How does MF signaling work?
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Telephone News
Ann Syrdal, Who Helped Give Computers a Female Voice, Dies at 74
https://www.nytimes.com/2020/08/20/technology/ann-syrdal-who-helped-give-computers-a-female-voice-dies-at-74.html As a researcher at AT&T, she helped lay the groundwork for modern digital assistants like Siri and Alexa. Dr. Sydral's research at Bell Labs in speech...
A very over simplification on how the old phone system used to work.
A *VERY* over simplification of how the old phone system used 2600 Hz as the key frequency for handing answer supervision and SF (single frequency) dialing. Of course discovered by accident using a "Captain Crunch" whistle that just happened to be at 2600 Hz.
Telephone News coming soon!
This is where you'll see current events for anything telephone related that I see in the news!