...特提供的智能光城域网解决方案能够帮助运营商实现IP层与光传送层的融合，简化了网络层次结构；带宽按需分配(Bandwidth on Demand) 极大地缩短了企事业用户的高速电路指配时间；光虚拟专用网(O-VPN)使运营商能够向租用其传输网带宽的大中型客户提供虚拟专用网管...
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dtm重新分配信道的能力加上按需分配带宽，使之提供的流量管理功能可与at m网相媲美。
Together with DTM's ability to reallocate channel and on-demand bandwidth, this provides traffic-engineering capability equivalent to that of ATM networks.
统计时分复用技术应用于SDH设备可实现带宽的按需分配。
The bandwidth allocation on demands will become reality when the technology of statistics & time multiplexing is applied to SDH equipment.
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