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A full-duplex (FDX) system allows communication in both directions, and, unlike half-duplex, allows this to happen simultaneously. [6] [7] [8] Land-line telephone networks are full-duplex since they allow both callers to speak and be heard at the same time. Full-duplex operation is achieved on a two-wire circuit through the use of a hybrid coil ...
Trunk coaxial cables are connected to the optical node [34] [35] and form a coaxial backbone to which smaller distribution cables connect. RF amplifiers called trunk amplifiers are used at intervals in the trunk to overcome cable attenuation and passive losses of the electrical signals caused by splitting or "tapping" the coaxial cable. Trunk ...
The two separate circuits (channels) allow full-duplex operation with low crosstalk. In telephony a four-wire circuit was historically used to transport and switch baseband audio signals in the phone company telephone exchange before the advent of digital modulation and the electronic switching system eliminated baseband audio from the telco ...
A cellular repeater (also known as cell phone signal booster or cell phone signal amplifier) is a type of bi-directional amplifier used to improve cell phone reception. [citation needed] A cellular repeater system commonly consists of a donor antenna that receives and transmits signal from nearby cell towers, coaxial cables, a signal amplifier, and an indoor rebroadcast antenna.
RS-485, like RS-422, can be made full-duplex by using four wires. [8] Since RS-485 is a multi-point specification, however, this is not necessary or desirable in many cases. RS-485 and RS-422 can interoperate with certain restrictions. [9] [failed verification]
In fiber-optic communications, wavelength-division multiplexing (WDM) is a technology which multiplexes a number of optical carrier signals onto a single optical fiber by using different wavelengths (i.e., colors) of laser light. [1]
Uses a single, bi-directional twisted pair in full duplex mode only; cables specified for a reach of 15 m (automotive link segment) or 40 m (optional link segment), intended for automotive and industrial applications; it uses 80B/81B encoding in the PCS, PAM-3 signalling at 750 MBd (three bits transmitted as two ternary symbols) and includes ...
CableLabs released the full specification in October 2017. [11] Previously branded as DOCSIS 3.1 Full Duplex, these technologies have been rebranded as part of DOCSIS 4.0. [12] DOCSIS 5.0 Proposed for 2025 or later. Targets 25 Gbit/s downstream and at least 5 Gbit/s upstream at 3 GHz. [13]
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