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Shenzhen JHA Technology Co., Ltd is one of the leading manufacturers of hardened Ethernet, PoE, and fiber connectivity products specifically designed for harsh and demanding environments.
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2022
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09
What is a metropolitan area network?
A metropolitan area network can be understood as a county road in a highway, or it can be understood as a network covering a city.
The Metropolitan Area Network (MAN) is based on a large-scale LAN and usually uses a technology similar to that of the LAN. One of the main reasons why MAN is listed separately is that there is already a standard: Distributed Queue Dual Bus DQDB (Distributed Queue Dual Bus), ie IEEE802.6. DQDB is composed of dual buses, and all computers are connected to it.
The so-called broadband metropolitan area network is a high-bandwidth, multi-functional, multi-service access multimedia that integrates data, voice, and video services based on IP and ATM telecommunication technologies and optical fiber as the transmission medium within the city. Communications network.
It can meet the growing demand for high-speed, high-quality data communication services from government agencies, financial insurance, large, medium and primary schools, companies and enterprises, especially the rapidly developing Internet user groups for broadband high-speed Internet access.
A metropolitan area network can cover several office buildings not far from each other or a city; it can be either a private network or a public network. The metropolitan area network can support both data and voice transmission, and can also be connected to cable television. The metropolitan area network generally consists of only one or two cables and no switching equipment, so its design is relatively simple.
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