BBX_AUS_161209

Networking
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Ethernet Extenders
.ETWORK%XTENDER+ISDSLT NetSwork Extender
3$3,!PPLICATION
SDSL Network Extender
2000 Kit, Subscriber Unit 2000 Kit, Provider Unit
Extend your LAN over (LR0020A-KIT-R2)
Up to 3.65 km (2.27 mi) (LR0020A-KIT-R2)
of any grade of
ordinary voice-grade 24 AWG UTP Cable
copper — using one, two,
or four pairs.
Pure Networking
™
Pure Networking
8-Port 10/100 Ethernet 8-Port 10/100 Ethernet
Switch (LB8508A), Switch (LB8508A),
p. 402 p. 402
PCs PCs
SDSL Network Extender ,OOP
"ONDED3$3,!PPLICASDSLTION Network Extender
Kit, Subscriber Unit Kit, Provider Unit
(LR0035A-KIT) UTP Cable #1 (LR0035A-KIT)
LR0020A-KIT
s)DEALFORPROVIDER
BASEDSERVICESWHOWANTTO
UTP Cable #2
offer greater bandwidth over longer distances.
Up to 3.4 km (2.14 mi.)
Pure Networking
™
s3ENDDATAATOR-BPS
of any grade of 26 AWG
Pure Networking
8-Port 10/100 Ethernet
UTP Cable
8-Port 10/100 Ethernet
s,OOPBONDINGTECHNOLOGYMULTIPLEXESTWO
Switch (LB8508A), Switch (LB8508A),
p. 402 p. 402
or four 2.3-Mbps copper pairs into one for
double the bandwidth at any distance.
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Item Code
s!UTOMATICFAILOVERANDRECOVERY
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— 1 Year Tech Support!
transmissions over four copper pairs, order…
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Black Box Explains
DSL
Asymmetric DSL (ADSL) — ADSL provides capabilities as HDSL with T1 rates (1.544 Mbps)
Digital Subscriber Line (DSL) was introduced as a
speeds ranging from downstream/upstream rates at ranges up to 3050 metres. It’s primarily
low-cost, high-speed way to transmit data over of 9 Mbps/640 kbps over a relatively short designed for business applications.
ordinary phone lines. It actually shares a phone distance to 1.544 Mbps/16 kbps as far away SHDSL — Also known as G.SHDSL, combines
line with analogue phone service. This is possible
as 5490 metres. ADSL and SDSL features for transmittal of T1, E1,
because analogue phone service uses only a
ADSL’s asymmetrical nature provides more ISDN, IP, and ATM communications over a single
small amount of bandwidth, enabling DSL to
than sufficient bandwidth for downstream pair of copper. SHDSL transmits symmetrical data
piggyback high-speed data traffic onto the line.
transmissions such as receiving data from a at 192 kbps both upstream and downstream up
To provide the ever-faster bandwidth customers
host computer or downloading multimedia files. to 7315 metres. At shorter, 1524 metre distances,
demand, telco providers and other carriers have
kept pace by offering ever-faster DSL variations,
The lopsided nature of ADSL is what makes it it supports speeds up to 5.7 Mbps downstream
known collectively as xDSL.
most likely to be used for high-speed Internet and upstream.
access. And the various speed/distance options G.lite — Also known as ADSL lite and Universal
DSL Alphabet Soup
available within this range are one more point ADSL, G.lite is a simplified xDSL offering stan-
Digital Subscriber Line (DSL) — DSL service can
in ADSL’s favor. And ADSL enables you to lease dardised as G.992.2 by the ITU. When it was first
support transmissions over a local loop ranging
and pay for only the bandwidth you need. introduced, G.lite represented the closest thing to
up to 5490 metres from the CO.
SDSL (Symmetric DSL) — This represents plug-and-play DSL. G.lite, however, didn’t quite
As with most xDSL services, data rates will
the two-wire version of HDSL—which is actually catch on, mainly because of its speeds (1.5-Mbps
increase near the CO and taper off with
symmetric DSL, albeit a four-wire version. Also downstream/512-kbps upstream rates) compared
DISTANCE.OTEALSO
known as HDSL2, it essentially offers the same to those offered by other DSL technologies.
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New Zealand: www.blackboxnz.co.nz – For Sales or Tech Support, call 0800-653-219.
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