1. Supports
1.1 Multiple service
- PS: 1.960 Mbps
- CS: 384 kbps
1.2 Multiple QoS
- Qos : 채널이 셋업될 때 설정, 이후 connection 상태에서 재설정 가능
1.3 Higher data rates
2. Provides
2.1 Wireline voice quality
- AMR(Adaptive multi-rate) vocoder
- Improvement over the Enhanced Full Rate (EFR) vocoder for GSM
2.2 Improved capacity
- fast power control (1500 Hz vs. 2Hz for GSM) on both the Uplink and the Downlink
2.3 spectral efficieny
- accomplished with CDMA