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A '''System Identification Number''' ('''SID''') is used to identify a cellular network in a certain area. It is a Global number to identify [[Base station|base stations]] for [[AMPS]], [[Time division multiple access|TDMA]] or [[CDMA]] networks. This number sometimes has conflicts (see [[IFAST]]).
==SID Codes==
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A typical SID area is about 30 - 60 miles in diameter, but some may be as large as 200 or more miles.
==External links==
[[http://www.mountainwireless.com/sid Mountain Wireless SID databse]]
[[http://www.rainyday.ca/~dialtone/ PRL Interpretations]]
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