Global System for Mobile
Communications (GSM)
l Based on narrowband TDMA.
l Data rate = 9.6 kbps.
l 200 KHz channel.
l 8 time slots (full rate) or 16 half-rate.
l Uses GSM MAP core switching technology.
l SMS.
l Operates in 900 MHz, 1800 MHz (Europe) and 1900
MHz (PCS).
l The GSM Association.

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