同步光纤网路数位交换连的英文

digital cross connectsystem equipment (sonet-based)

• 同步:    synchronization; s ...
• 光纤:    fibre-optical
• 网:    net
• 路数:    way; approach a mo ...
• 位:    place; location
• 交换:    exchange; swap; in ...
• 连:    link; join; connec ...