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    Based on the real C4 local network situations in Jiangsu province, this paper illustrates the necessity of integrating the C4 into the C3 and exemplifies 4 C3 local network configurations.

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    Based on the real C4 local network situations in Jiangsu province, this paper illustrates the necessity of integrating the C4 into the C3 and exemplifies 4 C3 local network configurations.

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