calling line identification request indication 主叫线路识别请求指示
SIR Service Identification Request 服务识别请求
line identification request indicator 线路识别请求指示器
line identification-request indicator [通信] 线路标识请求指示器
call request with identification 识别呼叫请求
request radar blip identification message 要求雷达回波识别信号
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