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  • 软件类型:国产软件/网络安全
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  • 收录/更新:2010-02-05/2010-02-05
  • 软件大小:397KB
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软件简介

电子书格式:PDF
语言:英文
    Abstract: IEEE 802.7-1989, IEEE Recommended Practices for Broadband Local Area Networks
(LANs) specifies the design, installation, and test parameters for a broadband cable medium. The
medium supports the communication of IEEE 802.3b, IEEE 802.4, video, and narrow-band radio
frequency (RF) modem devices. The broadband bus topology consists of amplifiers, coaxial cable,
and directional couplers that create a full duplex directional medium. Inbound signals flow from user
outlet transmitters to a central headend location. The headend processes the signals and then
transmits the signals via an outbound path to all the user outlets. The medium utilizes frequency
division multiplexing (FDM), which supports the simultaneous coexistence of services. Each service
is assigned a unique inbound and outbound channel frequency.

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