單項(xiàng)選擇題

關(guān)于BSC6000的信號(hào)流路徑,以下說法錯(cuò)誤的是()

A.Abis接口信令:BTS-GEIUB-GSCU-GXPUM
B.語音業(yè)務(wù):BTS-GEIUB-GTNU-GEIUT-GEIUT-GTNU-GDPUC=GTNU-GEIUA-MSC
C.接口7號(hào)信令:MSC-GEIUA-GSCU-GEIUT-GEIUT-GSCU-GXPUM
D.分組業(yè)務(wù):BTS-GEIUB-GTNU-GEIUP-PCU

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