(The equipment provided by Nortel Networks for the construction of the power optical ring network is: OM3500 equipment with RPR (Resilient Packet Ring) capability and OM4150 full-cross 622MSDH equipment; the two kinds of equipment are connected wonderfully, and together with network management equipment, in the situation of very severe bandwidth resources It satisfies the unique needs of users for TDM (mainly 2M, a few 155M) private line services and broadband data bearing channels on the 2.5G channel)
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