The current technology in PTN direction development,
Huawei PTN packet switching network, SDH (synchronous digital system), the ONU is PON (passive optical network) in the concept, the ONU is lower.Access layer is commonly by hosting online travels.OLT, ONU is through the PTN, Ethernet, etc., belongs to the category of the access layer, and should be OLT, mainly VOIP access, with your said, the concept of SDH transmission, so OLT, are all belong to the category of transmission bearing networkThe current technology in PTN direction development, PTNPTN () packet switching network, SDH (synchronous digital system), the ONU is PON (passive optical network) in the concept, the ONU is lower.Access layer is commonly by hosting online travels.
Huawei OLT, ONU is through the PTN, Ethernet, etc., belongs to the category of the access layer, and should be OLT, mainly VOIP access, with your said, the concept of SDH transmission, so OLT, are all belong to the category of transmission bearing network
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