ABB PDD500A101 3BHE037649R0101

Description

ABB PDD500A101 3BHE037649R0101

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In the planning and construction of urban area networks, a relatively independent network construction approach is generally adopted based on the nature of the services carried. PDD500A101 and 3BHE037649R0101 respectively construct two planes: the high-value plane for mobile backhaul networks and the low value plane for broadband user access networks. PTN focuses on carrying high-value businesses such as mobile backhaul services and group major clients; Low value services such as public broadband internet access and ordinary large customers can be accessed through passive optical networks (PONs), and then connected to the business control layer (BRAS or SR) through metropolitan Ethernet. Two planes do not consider fusion, are completely independent and do not interfere with each other. The adoption of such a strategy is mainly based on the following considerations:

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