[time-nuts] Time in Phone System
mikes at flatsurface.com
Tue Jul 22 22:51:47 EDT 2014
On 7/21/2014 11:07 PM, Brooke Clarke wrote:
> Every phone in my house that has an LCD shows the correct date & time,
> but I have never set any of them.
> I expect that there's date and time information being sent in the header
> of every phone call, maybe even before the first ring along with the
> Caller ID info
CID is sent using FSK between the first and second rings, and includes
the networks idea of TOD. Google can provide details.
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