单项选择题
Which logical channel is used to transfer signaling messages such as resource reallocation？（）
A.PDTCH B.PTCCH C.PACCH D.PBCCH
单项选择题 Which logical channel is used to send RACH bust on uplink and TAs on downlink？（）
单项选择题 Which parameter is usedby GPRST unnelling protocol between GSNs to identify a PDP context？（）
单项选择题 Which of following interface are not using CCS7 protocol？（）
