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| DSL
(Digital Subscriber Line) |
Omega Security International, LLC. offers three types
of DSL: ADSL (Asymmetric Digital Subscriber Line), SDSL
(Symmetric Digital Subscriber Line) and IDSL (ISDN Digital
Subscriber Line).
DSL
(Digital Subscriber Line) is a technology that provides
high-speed Internet access over ordinary copper wire telephone
lines also known as Plain Old Telephone Service (POTS).
DSL Internet access can be up to 12 times faster than
an ISDN line and up to 125 times faster than a 56.6K dial-up
modem connection. |
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Always
On |
No more busy signals and broken connections.
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Fast |
up to 125 times faster than a 56.6K dial-up modem.
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Reliable |
telephone company networks experience only minutes
of downtime each year. |
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Convenient |
call and surf the web simultaneously, or use several
computers on a single DSL line with dedicated connection
and speed. |
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Cost Effective |
offers more benefits and costs less than cable,
satellite or ISDN. |
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| ADSL (Asymmetric
Digital Subscriber Line) uses the same ordinary copper
wire telephone line for both phone service and high-speed
Internet connection. For example, it allows to talk on
the phone and surf the web at the same time. This is accomplished
by sending the DSL signal over the line at a higher frequency
than is used by voice. ADSL supports up to 8 Mbps bandwidth
for downloading and up to 1 Mbps for uploading. The asymmetric
nature of ADSL technology makes it ideal for Internet/Intranet
surfing, video-on-demand and remote local area network
(LAN) access. ADSL users typically download more information
than they send. |
| SDSL (Symmetric
Digital Subscriber Line) uses a dry copper wire telephone
line and cannot carry voice calls. SDSL requires installation
of a separate telephone line in addition to the ordinary
telephone service. Symmetric DSL offers the same upload
and download speeds that range from 160 Kbps up to 1.5
Mbps. SDSL is ideal for business networking and applications
such as video conferencing. |
IDSL (ISDN Digital
Subscriber Line) is ISDN based DSL. It uses the same type
of line-modulation technique employed in ISDN and SDSL.
IDSL provides symmetric download and upload speeds from
64 to 144 Kbps. An existing ISDN line can be converted
to IDSL.
The exact speed of a DSL connection depends on the distance
from the user's location to the DSL equipment in the local
phone company's central office. Shorter distance provides
for a higher connection speed. The speed is also affected
by the quality of the phone line and of the wiring available
at the user's location. |
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