For ADSL in the US- click here
For ADSL in the UK- click here
Digital Subscriber Line (ADSL) technology uses existing copper
telephone wiring to deliver high-speed data services to businesses and homes. In
its various forms - including ADSL, HADSL, IDSL, R-ADSL, SDSL, and VDSL - ADSL
offers users a choice of speeds ranging from 32 Kbps to, in laboratory settings,
more than 50 Mbps. These digital services will ultimately be used to deliver
bandwidth-intensive applications such as video on demand, distance learning
& video-conferencing. Today, ADSL is for the first time putting high-speed.
Internet access within the reach of small and medium-size businesses.
ADSL takes existing voice cables that connect customer premises to the phone
company's central office (CO) and turns them into a high-speed digital link.
Over any given link, the maximum ADSL speed is determined by the distance between
the customer site and the CO.
At the customer premises, a ADSL modem connects the phone line to either a
standalone computer or a local-area network (LAN). This ADSL equipment differs
from other Internet access devices in two key respects: It requires no end-user
configuration, and it is not a dial-up solution. Once installed, the ADSL modem
provides the customer site with continuous connection to the Internet.
ADSL technologies are changing the landscape of business
communications. By providing high-speed Internet access at prices that small and
medium-size businesses can afford, the opportunity to have the bandwidth you’ve
wanted is here.
Before the advent of ADSL, these companies had to choose between cheap but
agonizingly slow dial-up modems or fast but prohibitively expensive ISDN
services or leased lines. ADSL changes the economics of Internet access by
establishing an entirely new point on the price/performance curve.
ADSL services also offer small and medium-size businesses significantly higher
Internet access for only incrementally higher prices. This conveys a number of
compelling advantages to users:
VERIZON ONLINE DSL: Connect to the Internet at the speed essential to modern living
Continuous Connection: ADSL users are always connected, so they get immediate Internet access. ISDN terminal adapters require 5-10 seconds to establish a connection, while dial-up modems can take nearly half a minute.
Flat fee: ADSL subscribers pay a flat monthly fee for Internet access. There are no additional usage/metered charges to worry about.
Dedicated Bandwidth: ADSL line speeds are constant and provide the same speed (hence the "Symmetric" moniker) in both directions. Unlike cable modems, ADSL equipment is not accessing a shared infrastructure that throttles down individual connection speeds when traffic gets heavy.
Investment Protection: ADSL provides customers with a cost-effective upgrade path. SYSNET Communications can upgrade your ADSL Access Device remotely via software when you decide you need a higher access speed.
Easy Maintenance: ADSL connectivity is easy to maintain. Unlike ISDN devices, ADSL modems don't require any complex manual configuration - they are truly plug and play.
ADSL
Verizon Online DSL
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ADSL vs. Other Internet Connections* |
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50KB Text File |
8MB Video Clip |
17.7MB Microsoft IE 5.0 |
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28.8k Modem |
14 Sec. |
37 Min. |
1 Hr. 22 Min. |
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56k Modem |
7 Sec. |
20 Min. |
42 Min. |
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ISDN Modem (128k) |
3 Sec. |
8 Min. |
18 Min. |
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ADSL (786k) |
< 1 Sec. |
1 Min. 30 Sec. |
3 Min. |
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ADSL (1.5M) |
< 1 Sec. |
42 Sec. |
1 Min. 30 Sec. |
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