Single-pair High Speed Digital Subscriber Line - определение. Что такое Single-pair High Speed Digital Subscriber Line
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Что (кто) такое Single-pair High Speed Digital Subscriber Line - определение

TECHNOLOGY FOR BROADBAND INTERNET
SHDSL; G.SHDSL; G.shdsl; ITU G.991.2; G. Symmetric High-speed Digital Subscriber Line; G.991.2; ITU-T G.991.2; Symmetric high-speed digital subscriber line; Single-Pair High-speed Digital Subscriber Line; Symmetric High-speed Digital Subscriber Line
Найдено результатов: 16360
Single-pair high-speed digital subscriber line         
Single-pair high-speed digital subscriber line (SHDSL) is a form of symmetric digital subscriber line (SDSL), a data communications technology for equal transmit and receive (i.e.
Single-pair High Speed Digital Subscriber Line      
VDSL         
  • A VDSL2 cabinet on top of a copper cabling cabinet in Italy.
  • SoC]]
  • UK VDSL]] cabinet
  • DSLAM]] Cabinet installed by [[PCCW]] in [[Pat Heung]], [[Hong Kong]].
DIGITAL SUBSCRIBER LINE TECHNOLOGIES
Very-high-bit-rate digital subscriber line 2; VDSL2; Very-high-bit-rate Digital Subscriber Line; VHDSL; Very-high-bit-rate Digital Subscriber Line 2; Very high data rate Digital Subscriber Line; G.993.2; G.993.1; Very High Speed Digital Subscriber Line; Very High Bitrate Digital Subscriber Line; Very High Speed Digital Subscriber Line 2; Very high bitrate digital subscriber line; ITU G.993.2; ITU G.993.1; Very-high-bitrate digital subscriber line; Very high bit rate digital subscriber line; Very high speed digital subscriber line 2; G.vector; G.993.5; Vdsl 2; Vdsl2; Vdsl; Vectoring; Vplus; Very-high-bit-rate digital subscriber line
VDSL         
  • A VDSL2 cabinet on top of a copper cabling cabinet in Italy.
  • SoC]]
  • UK VDSL]] cabinet
  • DSLAM]] Cabinet installed by [[PCCW]] in [[Pat Heung]], [[Hong Kong]].
DIGITAL SUBSCRIBER LINE TECHNOLOGIES
Very-high-bit-rate digital subscriber line 2; VDSL2; Very-high-bit-rate Digital Subscriber Line; VHDSL; Very-high-bit-rate Digital Subscriber Line 2; Very high data rate Digital Subscriber Line; G.993.2; G.993.1; Very High Speed Digital Subscriber Line; Very High Bitrate Digital Subscriber Line; Very High Speed Digital Subscriber Line 2; Very high bitrate digital subscriber line; ITU G.993.2; ITU G.993.1; Very-high-bitrate digital subscriber line; Very high bit rate digital subscriber line; Very high speed digital subscriber line 2; G.vector; G.993.5; Vdsl 2; Vdsl2; Vdsl; Vectoring; Vplus; Very-high-bit-rate digital subscriber line
Very high data / bit rate Digital Subscriber Line (Reference: DSL)
VDSL         
  • A VDSL2 cabinet on top of a copper cabling cabinet in Italy.
  • SoC]]
  • UK VDSL]] cabinet
  • DSLAM]] Cabinet installed by [[PCCW]] in [[Pat Heung]], [[Hong Kong]].
DIGITAL SUBSCRIBER LINE TECHNOLOGIES
Very-high-bit-rate digital subscriber line 2; VDSL2; Very-high-bit-rate Digital Subscriber Line; VHDSL; Very-high-bit-rate Digital Subscriber Line 2; Very high data rate Digital Subscriber Line; G.993.2; G.993.1; Very High Speed Digital Subscriber Line; Very High Bitrate Digital Subscriber Line; Very High Speed Digital Subscriber Line 2; Very high bitrate digital subscriber line; ITU G.993.2; ITU G.993.1; Very-high-bitrate digital subscriber line; Very high bit rate digital subscriber line; Very high speed digital subscriber line 2; G.vector; G.993.5; Vdsl 2; Vdsl2; Vdsl; Vectoring; Vplus; Very-high-bit-rate digital subscriber line
Very high-speed digital subscriber line (VDSL) and very high-speed digital subscriber line 2 (VDSL2) are digital subscriber line (DSL) technologies providing data transmission faster than the earlier standards of asymmetric digital subscriber line (ADSL) G.992.
ADSL         
  • Downstream ADSL2+ only
}}
  • [[Frequency spectrum]] of modem on ADSL line
  • SoC]]
DSL WHERE DOWNSTREAM BANDWIDTH EXCEEDS UPSTREAM BANDWIDTH
Asynchronous Digital Subscriber Line; Asymmetric digital subscriber line; Adsl; Full-rate ADSL; Fastpath; ADSL1; Splitterless ADSL; Splitterless adsl; Asymmetric DSL; Asymmetric Digital Subscriber Line; ADSL line
ADSL is a method of transmitting digital information at high speed over telephone lines. ADSL is an abbreviation for 'asynchronous digital subscriber line'. (COMPUTING)
ADSL is always on, which makes your PC much more vulnerable to hacking.
FastPath         
  • Downstream ADSL2+ only
}}
  • [[Frequency spectrum]] of modem on ADSL line
  • SoC]]
DSL WHERE DOWNSTREAM BANDWIDTH EXCEEDS UPSTREAM BANDWIDTH
Asynchronous Digital Subscriber Line; Asymmetric digital subscriber line; Adsl; Full-rate ADSL; Fastpath; ADSL1; Splitterless ADSL; Splitterless adsl; Asymmetric DSL; Asymmetric Digital Subscriber Line; ADSL line
The Kinetics FastPath was a LocalTalk-to-Ethernet bridge (now referred to as a router) created in 1985 to allow Apple Macintosh computers (which at the time only had LocalTalk network connections) to communicate with other computers on Ethernet networks. The product had five significant revisions (known as KFPS-1 through KFPS-5) during its lifetime and was ultimately sold to Shiva Networks late in its existence.
Asymmetric Digital Subscriber Line         
  • Downstream ADSL2+ only
}}
  • [[Frequency spectrum]] of modem on ADSL line
  • SoC]]
DSL WHERE DOWNSTREAM BANDWIDTH EXCEEDS UPSTREAM BANDWIDTH
Asynchronous Digital Subscriber Line; Asymmetric digital subscriber line; Adsl; Full-rate ADSL; Fastpath; ADSL1; Splitterless ADSL; Splitterless adsl; Asymmetric DSL; Asymmetric Digital Subscriber Line; ADSL line
<communications, protocol> (ADSL, or Asymmetric Digital Subscriber Loop) A form of Digital Subscriber Line in which the bandwidth available for downstream connection is significantly larger then for upstream. Although designed to minimise the effect of crosstalk between the upstream and downstream channels this setup is well suited for {web browsing} and client-server applications as well as for some emerging applications such as video on demand. The data-rate of ADSL strongly depends on the length and quality of the line connecting the end-user to the telephone company. Typically the upstream data flow is between 16 and 640 kilobits per second while the downstream data flow is between 1.5 and 9 megabits per second. ADSL also provides a voice channel. ADSL can carry digital data, analog voice, and broadcast MPEG2 video in a variety of implementations to meet customer needs. ["Data Cooks, But Will Vendors Get Burned?", "Supercomm Spotlight On ADSL" & "Lucent Sells Paradine", Wilson & Carol, Inter@ctive Week Vol. 3 #13, p1 & 6, June 24 1996]. See also Carrierless Amplitude/Phase Modulation, {Discrete MultiTone}. ADSL Forum (http://adsl.com/). (1998-05-18)
ADSL         
  • Downstream ADSL2+ only
}}
  • [[Frequency spectrum]] of modem on ADSL line
  • SoC]]
DSL WHERE DOWNSTREAM BANDWIDTH EXCEEDS UPSTREAM BANDWIDTH
Asynchronous Digital Subscriber Line; Asymmetric digital subscriber line; Adsl; Full-rate ADSL; Fastpath; ADSL1; Splitterless ADSL; Splitterless adsl; Asymmetric DSL; Asymmetric Digital Subscriber Line; ADSL line
Asymmetric Digital Subscriber Line [Additional explanations: technology] (Reference: BELLCORE, AT&T, DSL, ADSL)
Asymmetric digital subscriber line         
  • Downstream ADSL2+ only
}}
  • [[Frequency spectrum]] of modem on ADSL line
  • SoC]]
DSL WHERE DOWNSTREAM BANDWIDTH EXCEEDS UPSTREAM BANDWIDTH
Asynchronous Digital Subscriber Line; Asymmetric digital subscriber line; Adsl; Full-rate ADSL; Fastpath; ADSL1; Splitterless ADSL; Splitterless adsl; Asymmetric DSL; Asymmetric Digital Subscriber Line; ADSL line
Asymmetric digital subscriber line (ADSL) is a type of digital subscriber line (DSL) technology, a data communications technology that enables faster data transmission over copper telephone lines than a conventional voiceband modem can provide. ADSL differs from the less common symmetric digital subscriber line (SDSL).

Википедия

Single-pair high-speed digital subscriber line

Single-pair high-speed digital subscriber line (SHDSL) is a form of symmetric digital subscriber line (SDSL), a data communications technology for equal transmit and receive (i.e. symmetric) data rate over copper telephone lines, faster than a conventional voiceband modem can provide. As opposed to other DSL technologies, SHDSL employs trellis-coded pulse-amplitude modulation (TC-PAM). As a baseband transmission scheme, TC-PAM operates at frequencies that include those used by the analog voice plain old telephone service (POTS). As such, a frequency splitter, or DSL filter, cannot be used to allow a telephone line to be shared by both an SHDSL service and a POTS service at the same time. Support of symmetric data rates made SHDSL a popular choice by businesses for private branch exchange (PBX), virtual private network (VPN), web hosting and other data services.

SHDSL features symmetrical data rates in both the upstream and downstream directions, from 192 kbit/s to 2,312 kbit/s of payload in 8 kbit/s increments for one pair and 384 kbit/s to 4,624 kbit/s in 16 kbit/s increments for two pairs of wires. The reach varies according to the loop rate and noise conditions (more noise or higher rate means decreased reach) and may be up to 3,000 meters. The two pair feature may alternatively be used for increased reach applications by keeping the data rate low. Halving the data rate per pair will provide similar speeds to single pair lines while increasing the error/noise tolerance.

With the 32-TC-PAM modulation scheme described in Annexes F and G, symmetric data rates of up to 5,696 kbit/s are permitted on one pair in the optional extended SHDSL mode. Up to four pairs of wires may be bonded using M-pair bonding to produce data rates as high as M5,696 kbit/s. By using four bonded wire pairs, a single SHDSL interface can transmit up to 22,784 kbit/s.

The SHDSL payload may be either 'clear channel' (unstructured), T1 or E1 (full rate or fractional), multiple ISDN Basic Rate Interface (BRI), Asynchronous Transfer Mode (ATM) cells or Ethernet packets. A 'dual bearer' mode allows a mixture of two separate streams (e.g. T1 and ATM) to share the SHDSL bandwidth.