...峰时段(Busy Hour) 占线信号(Busy Signal) 忙音(Busy Tone) 占线确认音(Busy Verification Tone) 旁路干线群(Bypass Trunk Group) TOP C 布线管理(Cabling Administration) CAC: 连接(呼叫) 准入控制(Connection (or Call) Admission Control) CALEA: 执法中..
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