North American Network Operators Group

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GPS SA and Network Timing

  • From: Eric Germann
  • Date: Wed Sep 26 08:15:48 2001

During the recent attacks, there was a brief discussion as to whether the
USG had or would invoke GPS SA.  We have a client who is building a broad
ATM network and had planned to use GPS based timing solutions from TrueTime
for a clocking source, in addition to a feed from the LEC.

If GPS SA is invoked down the road during a crisis, what effect is there, if
any, on networks which rely on GPS for timing, not positioning?


  Eric Germann                                        CCTec
  [email protected]                                 Van Wert OH 45801                                Ph:  419 968 2640
                                                      Fax: 603 825 5893

"It is so easy to miss pretty trivial solutions to problems deemed
complicated.  The goal of a scientist is to find an interesting problem,
and live off it for a while.  The goal of an engineer is to evade
interesting problems :)"  -- Vadim Antonov <[email protected]> on NANOG

FN:Eric Germann
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