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In general, the active network architecture deployed by Nucleus Connect is based on Carrier Ethernet Transport technology. The End-User traffic is carried from the Access network comprising of the Optical Line Terminal (OLT) or Optical Ethernet (OE) Node, to the Aggregation Layer, to the Core Layer and to the Provider Edge (PE) Router facing the RSP.
The Carrier Ethernet Transport is able to provide a deterministic end-to-end path that will address your requirement of a scalable, reliable and open access network.
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| Network Architecture Diagram |
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| Access Network |
Both Gigabit Passive Optical Network (GPON) and Optical Ethernet technologies are supported in the Access Network. The Network Terminal Equipment (NTE) such as GPON ONT will have service port for you to interface to the Access Network. If your service require specific performance attributes (such as latency, jitter or packet loss), the Access Network can support four Classes of Service (CoS) and you can select one that meet your service performance requirement.
Nucleus Connect will advise you on the VLAN and QoS tagging scheme so that your services (e.g video, voice and internet) will be transmitted correctly and your users are getting the right experience from your offerings.
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| Aggregation and Core Network |
From the Access network, traffic is aggregated at the Aggregation network and delivered to the Core network. There are 9 Aggregation networks (NetCo CO) located at Tuas(TS), Jurong West(JW), Bukit Panjang(BP), Ayer Rajah(AR), Ang Mo Kio(AM), Orchard(OC), East(ES), Bedok(BD) and Tampines(TP). Each Aggregation network will only serve one Access Network.
There are two Core Networks (Nucleus Connect CO) and both are geographically apart. The two Core Networks are interconnected to provide diversity and resiliency.
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Nucleus Connect offer both a “End-to-End” Service model and a “Segment-by-Segment” Service model in the ICO.
In a “Segment-by-Segment” service model, you can build and dimension your own logical network architecture by ordering the segment bandwidth, according to your traffic engineering policy and your service performance requirement.
In an “End-to-End” Service model, all the Aggregation to Core Network connections will be automatically provisioned when you order a service under this model. The bandwidth that is provisioned between Access, Aggregation and Core Network will match according to the subscribed Committed bandwidth of the respective End-to-End service.
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