What are some GSM transmisson media?

weitian
Posts: 1
Joined: Tue Jun 16, 2009 11:48 pm

Tue Jun 16, 2009 11:52 pm

My question is what Media , medium that GSM uses for transmission.

I was wondering is SIM , GPRS or SMS the correct answers to it?
I am uncertain.
And could you guys briefly describe the medium of it.
Thankyou.

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