单项选择题

在TCH信道上收到下面哪条消息时计一次MC739掉话()

A.Connetion Failure Indication (cause'radio link failure') 
B.Connetion Failure Indication(cause'remmote transcoder failure') 
C.Connetion Failure Indication(cause'equipment failure') 
D.Connetion Failure Indication(cause'YY_TXPWR_M')

微信扫码免费搜题