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⟩ What is the purpose of GSM DEVISE AND WHAT IS GPRS?

GSM is a circuit switched network which is used for voice

call.for data call we use GPRS.Gprs uses network elements of

gsm but it has two additional nodes (SGSN,GGSN).by using

these two nodes we can connect to PDN(packet data network)

and make packet call(downloadig)

data speeds of gsm 13kb/s

while in gprs 171kb/s

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