电话中继线的英文

telephone trunk

• 电话:    telephone; phone; ...
• 中继线:    junction line; rel ...
• 长途电话中继线:    itt intertoll trun ...

例句与用法

1. This requires new kinds of circuit - switching gateways that feature lan interfaces and telephony trunk connections to public networks and pbxs
   这就要求用新型的电路交换网关，它们具有局域网接口和与公用网和用户交换机电话中继线连接的特点。