T3 Internet Service
A T3 dedicated Internet connection
can give you the bandwidth you need for an ISP backbone or large
By: John Shepler
Dedicated Internet service gives you a
private high speed line from your company to the Internet. This
is important because many always-on Internet connections have
a bandwidth that varies widely depending on how many other users
are sharing the service. That's right. DSL, cable and wireless
Internet services are priced based on statistical multiplexing.
In other words, they are sold to many more users than would be
able to get a broadband connection if they were all on at the
same time. This is called oversubscription.
There's Broadband and There's Broadband
So, wait a second. You've got broadband
but it really isn't broadband? Actually, you probably will get
something of a broadband connection much of the time. But it's
not guaranteed. The statistical part of the statistical multiplexing
is based on the fact that, statistically speaking, everyone isn't
uploading or downloading at the same time.
The Magic of Multiplexing
You'll likely take advantage of this phenomena
in your own company. Look around. How many people are actively
typing on their computers at the same time? How many are even
at their desk? You don't need to allocate a Mbps full time for
each employee. If you've got a dozen to maybe two dozen people
who need internet access, a T1 line at 1.5 Mbps might be all
you need. At any given time, a user might think they have the
line all to themselves. That may well be true for the fraction
of a second they are loading a new page.
Why Dedicated Bandwidth?
The reason you want dedicated Internet
access is that YOU want to be able to control your bandwidth
usage. That dedicated line may also be used for a web site server
and an email server. Overnight, when everybody is gone, the entire
bandwidth can be used for offsite backup of computer files. In
a pinch you can commandeer the line or a given amount of bandwidth
for a particular need, such as downloading engineering drawings
to a supplier. It's also essential to manage your bandwidth if
you are using VoIP telephone in place of standard switched telephone
T3 vs T1
When T1 Internet access isn't adequate,
T3 Internet will give you a massive jump in available bandwidth.
T3 line speed is 45 Mbps. That's fast enough to be the backbone
for many smaller Internet Service Providers. It's also adequate
as the Internet service for companies with hundreds to maybe
a thousand employees. For smaller operations, T3 Internet will
give you the ability to run hosted VoIP service, perform faster
backups and disaster recovery, host video conferences with full
motion, rapidly transmit large engineering files or some combination
T3 vs DS3
T3 Internet may be referred to as DS3 Internet
service. That's because DS3 is the digital signal level that
runs on a T3 line. DS3 may also be delivered via fiber optic
cable rather than coaxial copper cable.
Competition from Carrier Ethernet
In recent years, a newer technology called Carrier Ethernet has started replacing both T1 lines, DS3 and SONET OCx fiber. Ethernet over Copper (EoC) uses the same twisted pair wiring at T1 and is available from 2 to 45 Mbps. Ethernet over Fiber (EoF) is highly scalable in the range from 10 Mbps to 10 Gbps, with 100 Mbps and Gigabit Ethernet being very popular service levels. Ethernet is far more scalable than earlier technologies and enjoys a cost advantage as well.
Discover Your Bandwidth Upgrade Options Now
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