[time-nuts] Loran in the US

[Magnus Danielson]

On 03/09/2012 12:16 AM, Bob Camp wrote:
> Hi
>
> SDH/SONET generally is line timed rather than GPS locked. It's ultimate authority is the Stratum 1 above it...

Yes, but GPS/LORAN can be used to build holdover synchronisation, and 
verify the local cesiums.

Stratum 1 is the ANSI T1.101 name, also known as PRC in SDH, which is 
ITU-T G.811.

Cheers,
Magnus