One-line special topic

One-line communication, whose professional name is "narrowband integrated service digital network", is developed based on telephone lines. It can provide comprehensive services such as voice, data, and images on an ordinary telephone line, providing the society with an economical, high-speed, multi-functional, wide coverage, and simple access communication means. Huajun Software Park provides you with first-line special topics for everyone to download. Different types and versions will definitely help everyone, so hurry up and take a look.
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One-line special topic

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One-line communication, whose professional name is "narrowband integrated service digital network", is developed based on telephone lines. It can provide comprehensive services such as voice, data, and images on an ordinary telephone line, providing the society with an economical, high-speed, multi-functional, wide coverage, and simple access communication means. Huajun Software Park provides you with first-line special topics for everyone to download. Different types and versions will definitely help everyone, so hurry up and take a look.