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How car telematics helped catch a murderer
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TheUnnamedNewbie:

--- Quote from: I wanted a rude username on March 03, 2020, 11:06:57 am ---
--- Quote from: Halcyon on March 03, 2020, 10:21:15 am ---Back in the day of POTS services, even if you had no dial-tone (due to a suspended service), you could still call 000.

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Didn't know that, but it doesn't surprise me. Taking emergency calls seriously is a constant in the telephony industry. The lengths that the GSM designers went to, such as actively kicking off non-emergency calls if the cell was full, are astonishing.

Also, apparently 911 now works in Australia (at least from mobiles ... can't see how it'd work from a land line unless the exchange uses a timeout). Must try that next time I have a less urgent emergency.  ;D

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I was told at some point modern standards/phones don't actually 'dial' 911 or 112 or 100 or 999 or whatever. They simply recognize it as 'emergency', and then use a channel/identifier as defined in the standard (so independent of where you are) to connect to emergency services.


--- Quote from: Halcyon on March 03, 2020, 10:21:15 am ---
If there is no verbal response from the caller, it is forwarded to the Police as what is known as a "Five five call". The reason for the raised dimple on the "5" key on almost every phone with actual buttons is that you can press that twice (or if requested by the operator, respond to questions using only that key) and you don't need to see or look at the keypad to do it.


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I though the reason for the dimple is simply as home key (similar to F and J on most computer keyboard layouts) so you can orient yourself on the keyboard in the dark. I imagine the 5 being used for emergency is a result of that, and not the reason for it.

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