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© 2003 John D. McGregor
Application
Handset
Manufacturer
Protocol
Set
Coverage
Area
A
GPRS
international
B
GPRS
national
C
GPRS
local
A
EGPRS
national
B
EGPRS
local
C
EGPRS
international
A
UMTS
local
B
UMTS
international
C
UMTS
national