... CFR Channel Failure Ratio 信道失效比 CFS Call Failure Signal 呼叫故障信号 CFU Call Forwarding Unconditional 无条件呼叫转送 ...
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...) ANN应答信号、免费(Answer signal,no charge) CBK挂机信号(Clear-back signal) CFL 呼叫故障信号(Call failure signal) CLF 拆线信号(Clear forward signal) RLG释放监护信号(Release guard signal) witsky 常用TUP消息名(二): IAI 带有附加信...
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Call-Failure Signal CFL 呼叫 ; 呼叫故障循环
CFS Call Failure Signal 呼叫故障信号
Call-Failure Signal CFS 呼叫故障信号
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