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This is a list of very-high-bit-rate digital subscriber line (VDSL) and very-high-bit-rate digital subscriber line 2 (VDSL2) deployments.. The term VDSL can either refer specifically to ITU-T G.993.1 (first generation VDSL, officially abbreviated as "VDSL", unofficially also called "VDSL1"), or may be used as an umbrella term for both ITU-T G.993.1 and ITU-T G.993.2 (second generation VDSL ...
To limit interference to those radio services, the ITU-T G.9700 recommendation, also called G.fast-psd, specifies a set of tools to shape the power spectral density of the transmit signal; [9] G.9701, codenamed G.fast-phy, is the G.fast physical layer specification.
The two main pieces of equipment are a digital subscriber line access multiplexer (DSLAM) at one end and a DSL modem at the other end. It is possible to set up a DSL connection over an existing cable. Such deployment, even including equipment, is much cheaper than installing a new, high-bandwidth fiber-optic cable over the same route and ...
Many "modems" (cable modems, DSL gateways or Optical Network Terminals (ONTs)) provide the additional functionality to host a LAN so most Internet access today is through a LAN such as that created by a WiFi router connected to a modem or a combo modem router, [citation needed] often a very small LAN with just one or two devices attached. And ...
The ITU-T G.984 Gigabit-capable Passive Optical Networks (GPON, G-PON) standard, first defined in 2003, [14] represented an increase, compared to BPON, in both the total bandwidth and bandwidth efficiency through the use of larger, variable-length packets. Again, the standards permit several choices of bit rate, but the industry has converged ...
In the late 1950s, a network of computers was built for the U.S. military Semi-Automatic Ground Environment (SAGE) radar system [1] [2] [3] using the Bell 101 modem. It was the first commercial modem for computers, released by AT&T Corporation in 1958.
DVB-C2, an enhanced version of the DVB-C digital cable TV standard; Power line communication (PLC) ITU-T G.hn, a standard which provides high-speed local area networking of existing home wiring (power lines, phone lines and coaxial cables) [13] TrailBlazer telephone line modems; Multimedia over Coax Alliance (MoCA) home networking; DOCSIS 3.1 ...
ITU-T G.694.2: current Fibre 1270 – 1610 nm: LC SFP: OSx: 40k – 100k: 2 1 1 CWDM makes it possible to have multiple parallel channels over 2 fibers; spectral bandwidth 11 nm; capable of 18 parallel channels: 1000BASE‑DWDM [24] [23] ITU-T G.694.1: current Fibre 1528 – 1565 nm: LC SFP: OSx: 40k – 120k: 2 1 1