单项选择题 Which type of interference is produced by other transmitters on the same frequency? （）

单项选择题 A cell has 3 TRUs with an SDCCH/8 configuration. What is themaximum number of telephone calls it can support simultaneously with ahalf-rate vocoder? （）

单项选择题 How many ARFCNs can an operator use if allocated 15 MHz uplink and 15 MHz downlink (minus one for guardband)? （）