设备首先使用一个信令交换过程来建立到ATM目的地的路径。
Devices first use a signaling process to establish a path with an ATM destination.
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.
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.
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