... 电话式电路 telephone type circuit 电话信令信息 Telephone Signaling Information TSI 电话业务 telephone service ...
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一种传输电话信令信息方式，所使用的路径与话音路径不同。
A way of carrying telephone signaling information along a path different from the path used to carry voice.
然后，为了能访问到呼叫方和被叫方的地址信息，电话局向信令网关发一个SS7消息。
The central office then sends an SS7 message to a signaling gateway in order to get access to calling and called address information.
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