What is a 10Broad36 network

10BROAD36 - 10BROAD36

10BROAD36 is an outdated computer network standard in the Ethernet family. It was developed and used in the 1980s IEEE 802.3b-1985 specified.

The standard supports 10 Mbps Ethernet signals over a standard 75 ohm cable television (CATV) cable over a range of 3600 meters. 10BROAD36 modulates its data onto a carrier signal with a higher frequency, similar to how an audio signal would modulate a carrier signal to be transmitted in a radio station. In telecommunications technology, this is a broadband signaling technology. Broadband offers several advantages over the baseband signal used, for example in 10BASE5. The range is significantly extended (3600 meters versus 500 meters with 10BASE5) and multiple signals can be transmitted over the same cable. 10BROAD36 can even share a cable with standard television channels.

standardization

The standardization body of the Institute for Electrical Engineering and Electronics, IEEE 802, published the standard, which was ratified in 1985 as additional section 11 to the basic Ethernet standard. It was also issued as ISO / IEC 8802-3 in 1989.

commitment

10BROAD36 was less successful than its contemporaries due to the high complexity (and cost) of the equipment involved. The individual stations are much more expensive due to the additional high-frequency circuit; The primary additional complexity, however, comes from the fact that 10BROAD36 is unidirectional. Signals can only travel in one direction along the line, so there must be head-end stations on the line to transmit the signals (ensuring that no packets are transmitted indefinitely through the line) on another, one frequency in the reverse direction same line or another line to be repeated throughout. This also increases latency and prevents bidirectional signal flow.

The added complexity outweighed the benefit of the reusability of the CATV technology for the intended campus and metropolitan networks. A plumber at Boston University using the Ungermann-Bass product found that no plumber understood both the digital and analog aspects of the system. In wide area networks, it was quickly replaced by fiber optic communication alternatives such as 100BASE-FX (which provided ten times the data rate). Interest in cable modems for Internet access in residential areas was revived by later technologies such as the Data Over Cable Service Interface Specification (DOCSIS) in the 1990s.

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