called subscriber free signal的意思|示意
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英 / /
被叫用户自由信号
called subscriber free signal的网络常见释义
被叫用户空闲信号 ... 被叫用户话终断路 called-party release 被叫用户空闲信号 called subscriber free signal 被叫用户识别号 cuid called user identification number ...