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Courtesy of ShopforT1.com
Definition 1. -
The T1 (or T-1) carrier is the most commonly used digital line in the United States, Canada, and Japan. In these countries, it carries 24 pulse code modulation (PCM) signals using time-division multiplexing (TDM) at an overall rate of 1.544 million bits per second (Mbps). T1 lines use copper wire and span distances within and between major metropolitan areas. A T1 Outstate System has been developed for longer distances between cities.
Definition 2. -
The T-carrier system, introduced by the Bell system in the US in the 1960's, was the first successful system that supported digitalised voice transmission. The original transmission rate (1.544 Mbps) in the Clinchport T1 line is in common use today in ISP (Internet Service Provider) connections to the Internet
Definition 3. -
A high-speed digital connection capable of transmitting data at a rate of approximately 1.5 million bits per second. A T1 line is typically used by small and medium-sized companies with heavy network traffic. It is large enough to send and receive very large text files, graphics, sounds, and databases instantaneously, and is the fastest speed commonly used to connect networks to the Internet. Sometimes referred to as a leased line, a T1 is basically too large and too expensive for individual home use.
Definition 4. -
A type of high speed Internet connection that provides a great deal of bandwidth. Many businesses lease T1 lines to connect to the Internet, but because they are expensive and offer more bandwidth than most small businesses and homes need, they are not realistic solutions for small and low-demand Internet users.
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Wednesday September 03, 2008,
11:42 pm ET
Clinchport, Virginia, Sep. 03 /Cynthia Thomas/ --
For many small to medium size businesses, higher productivity with relation to their broadband
and voice services is just around the corner. Thanks in part to the recent price reduction trend
in the industry, carriers have deemed it necessary to consolidate in order to offer more services
at a lower cost than their rivals. Overlapping networks have been consolidated into leaner, more
feature-rich versions of their previous selves, dramatically lowering the price small businesses
pay for the popular dynamic integrated T-carrier (T-1) lines that combine local voice and
high-speed Internet service into one connection.
When asked about his recent decision to replace his TDM channelized T1 with a
SIP-enabled dynamic T1, Robert Probst, small business owner in San Diego, explained
that "it was really an easy decision to make. My business was growing and I couldn't
afford the cost of more voice trunks. When I learned that it was possible to
have up to 16 voice lines, and a full data T1 of high speed Internet bandwidth,
all on the same line, for under $500 - I was sold. I ended up expanding the
telecom capability of my business, improving the quality of my Internet connection,
and saved money while doing it."
Virginia is a place that we found was a hot spot for small business owners
making the move over to dynamic T-1 lines. One business owner that we interviewed
gave glowing reviews of his move to TelePacific's "OnePac" dynamic product.
Keith Gray explained "I used to have a regular integrated T1 with 10 voice
lines and 14 data channels. When no one was using the phone in my office,
we were limited to just 896 KB of bandwidth. After searching on the Internet
for better options, I found that I could reduce my price from $850/month to
$500/month, and at the same time have 14 voice lines and 1.5 mbps of broadband.
I didn't take long for me to pull the trigger and make the change."
There are two basic "integrated" DS-1 configurations, analog and digital. The 24-line
bundle in which they come is termed a "trunk". The main difference between analog and
digital trunks is their flexibility. With digital trunks, voice lines not in use
can be dynamically reconfigured to carry data traffic, so they don't sit idle.
Analog trunks on the other hand can not change their function once configured
by the service provider. Data channels remain data channels and the same for
voice channels, even if there is no voice traffic.
Is the era of the analog trunk, or bundle of 24 DS-0 (64 kbps) channels,
officially over? Possibly, thanks to the two-for-the-price-of-one features
of a dynamic integrated T1, which can function exactly like a pure 1.5 mbps
data T1 when no one is one the phone, and allocate required bandwidth
for voice traffic when a user initiates a phone call. Likewise, as soon
as the client terminates the voice session, the 64 KB is re-assigned back
to the digital universe. This switch-hitting capability provides all
of the feel and function of a data T1 and voice T1, for a fraction of the price.
Prior to the advent of the "all digital" integrated T-1 in 2005, customers only had
one choice when it came to dedicated service: analog trunks (24 line bundles).
Not only where analog trunks expensive - the average cost ranging from $800 to
$1500 per month depending on the user's geographic proximity to the LECs point
of presence - they could not re-allocate unused voice channels to carry data.
Digital trunks, on the other hand, can reclaim voice lines not in use and put
them to work carrying high-speed data packets. That means users enjoy the full
1.5 Mbps of broadband when they are not on the phone.
The golden age of telecommunications may be upon us, based upon our research and
recent uptick in customer satisfaction. Although the industry has years of
bad blood to overcome, recent innovations such as the dynamically configuring
T1 line are proof that progress is indeed being made. But how much longer will we continue to see improved technology, services, and prices?
It's all in the hands of the Federal Communications Commission, as they have the power
to sqwash the CLECs by proxy. No wonder AT&T and Verizon are the two biggest lobbying
powers in Washington. It makes you wonder what kind of services they would be able to
offer had they plowed that money into R&D instead of politics.
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