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The traditional communication service provider has a relatively simple business form, has a long network construction and service introduction cycle, and is accustomed to business operations based on user access, and basic network planning, construction, and maintenance according to the physical network technology field. Hence, we are now facing a divided CT partially standardized Communication Technology (or CT in short) industry chain with highly standardized network functions (or NFs in short) as well as highly customized operation and maintenance management.
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