[ntp:questions] .1 Microsecond Synchronization

Unruh unruh-spam at physics.ubc.ca
Sat Jun 6 02:53:50 UTC 2009


"Richard B. Gilbert" <rgilbert88 at comcast.net> writes:

>Unruh wrote:
>> "Richard B. Gilbert" <rgilbert88 at comcast.net> writes:
>> 
>>> Harlan Stenn wrote:
>>>> The time on my cellphone is routinely more than 3 seconds off of GPS time.
>> 
>>> Is your cell phone "CDMA"?   Other technologies, there are several, may 
>>> not require the precise timing that CDMA does!
>> 
>> It will be hard for them to get CDMA in London, or Paris, or in fact anywhere in the world except
>> N America.
>> 

>Being a citizen of, and resident in, the U.S.A. I tend to supply answers 
>  relevant to the U.S.A.  AFAIK, Harlan is also a citizen and resident.

>As I mentioned, there ARE other technologies. Technologies ofter than 
>CDMA are used both here and abroad.  Verizon Wireless is one of the 
>largest service providers here and they use CDMA.

But since the OP about whom this whole thread is all about seems to be with a worldwide company, 
the answer may be less relevant for him. 

>So far, my CDMA phones have been able to make and receive calls 
>everywhere I've been since I bought my first digital phone.

I guess you don't travel much.


>FWIW, I believe that Japan and Korea also use CDMA.

Different frequencies etc. I believe. I think neither US nor European phones word there. 
But I have never been there to try.





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