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Figure 3 – Multi‐tier SSC ICT meta‐architecture
A smart sustainable city can also be considered a system of subsystems. With regard to its technical
definition, it can be viewed from different perspectives. Figures 4 and 5 demonstrate the
communications view of the SSC ICT architecture, based on a physical and an information flow
perspective respectively. Both perspectives of this view are multi‐tier.
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13 Technical Specification on “Setting the framework for an ICT architecture of a smart sustainable city” (fg‐
ssc‐0345)
156 ITU‐T's Technical Reports and Specifications
