Brian Lingard wrote in a message to MARK CRANWELL:
BL> Not sure if the networks exchange information as to your
BL> status on your home network or not e.g. stolen, fraud etc.
BL> If they did, it would be one good way to eliminate
BL> fraudulent phone use.
The system also verifies that you are legitimate as well as re-verifies it 
each time you make a call. That's why roaming calls take (a little) longer to 
set up.
John Summers
http://www.ultravision.net
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