Um interface

Use TDM frame - 8 bits

Mobile and BTS interface by Air

ARFCN - Downlink & Uplink

FDMA

TDMA

TDMA Frame has 8 time slots or physical channels - 4.62 ms

1. Hyperframe

2. Superframe

3. 51 multiframe

4. 26 multiframe

Modulation

GMSK