短語詞組短語Call and Session Control Function 通話琯理功能CSCF Call Session Control Function 呼叫會(huì)話控制功能Emergency Call Session Control Function 緊急呼叫會(huì)話控制功能Proxy -Call Session Control Function 代理呼叫會(huì)話控制功能Serving -Call Session Control Function 服務(wù)Server -Call Session Control Function 服務(wù) 返回 call session control function