多粒度光交叉连接设备是自动交换光网络中传送平面的关键设备，直接为自动交换光网络提供光通道连接功能。
The multigranular optical cross connect is the key equipment in ASON. It provides the connection function for optical channel.
通过引入光交叉连接oxc，光网络可以通过波长选路为节点对提供端到端的光通道，进而实现波长的重用。
By utilizing equipments like Optical Cross Connect (OXC), WDM network could provide end-to-end light-paths to source-destination node pairs and re-use wavelength resources.
信令是光通道自动创建、拆除和修改等操作的具体执行者，在自动交换光网络中起着至关重要的作用。
Signaling, the executive of automatic connection set-up, release, modification and maintenance, plays an important part in ASON.
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