toll junction line
长途中继线中转开关 toll trunk transit switch
卫星长途中继线 satellite toll trunk
甲乙长途中继线 A-B toll trank
长途电话中继线 ITT InterToll Trunk ; ITT
长途出局中继线 toll outgoing trunk
长途线中继电路 toll line trunk circuit
长途局间中继线 [通信] intertoll trunk
长途登记中继线 toll recording trunk
长途台间中继线 intertoll trunk
长途拨号中继线 toll dialing trunk
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T104测试线。用于双向传输损耗测量，由远至近噪声测量以及通常用于测试长途中继线的由远至近的噪声。
The T104 test, used for two-way transmission loss measurements, far-to-near noise measurements and near-to-far noise checks is normally used in testing toll trunks.
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