單項選擇題Why are base stations sometimes cascade connected? （）
A. To save antennas
B. To share PCM links
C. To share RBS equipment
D. To simplify the installation
E. To be able to reuse frequencies
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1.單項選擇題Which of the following is the nominal output power for a GSM 900, class 4, or GSM 1800/GSM 1900, class 1, mobile station? （）
A.20W
B.2W
C.5W
D.8W
E.0.2W
2.單項選擇題What is the advantage of using DTX for an MS? （）
A. Increases battery life
B. Better Bit Error Rate (BQRE)
C. Higher strength
D. Increased bit rate
E. Better voice quality
