In article , Rupert Moss-Eccardt
scribeth thus
Steve Terry wrote:
snip

Well done. How about the actual operational needs.
To pick a simple example. Tetra works on the TGV, GSM doesn't


GSM could, GSM is now possible on airliners using cells on the aircraft
linked up to satellite or down to ground stations, and GSM is regularly
used on sea going Ferries using similar systems.

A more practical example is when i was in Hong Kong in 2002 i was using
GSM all over their MTR underground railway.
Obviously if the public have GSM down there, so did the staff and any
emergency services.

Translation: Steve Terry doesn't understand the issues. Think why I
chose TGV especially, rather than another line.


Umm. Perhaps it is to
do with the speed of the handset relative to the basestation.



Think about that one;?....

--
Tony Sayer