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What Affects Connect Speeds?
Connect speed is dependent on two items; the
compatibility between your modem and ElkNet equipment, and
the quality of each individual telephone call placed to
ElkNet. Let's discuss modems first:
Modem
Compatibility
- Chipsets- The ElkNet equipment is based on the
Rockwell chipset, and is completely V.90 compliant. This means that
our equipment will work with the widest possible group of modems,
as the V.90 standard is an international standard, and also because
75% of the manufactured modems, from various companies, use the
Rockwell chipset. For the best possible connect rates, use a modem
based on the Rockwell chipset, and make sure that it is V.90 compatible.
- Updates- Many modem manufacturers
periodically improve their product, and often updates
can be downloaded directly from the manufacturers web
site. Otherwise try
www.56k.com.
- Software
Modems- There is one other modem issue
to consider, and that is the topic of Software Modems.
To reduce the price of their computers, some companies
are installing a low performance, low cost type of
modem in their systems known as a software modem. This
type of modem replaces much of the expensive
electronic components on the modem with software on
your computer, making the computer itself simulate
part of the modem. This type of modem is available
with both Rockwell chipsets and 3COM/US-Robotics
chipsets. These modems are known as RPI, HFC,
SoftModem or WINModem. If the box says that Windows is
required, it is likely that it is a software modem. If
at all possible, stay away from, or replace, this type
of modem. You spent a lot of money on your computer
for it to be a computer, not a modem. Internet usage
on this type of modem is typically very
unsatisfactory.
Telephone
Lines:
The second item that affects your connect
speed, and the much more significant one, is the quality
of each telephone call your computer's modem places to
ElkNet.
- What's a phone line
for?- While you may not hear much of a
difference between calls you make to friends and
family, there are many quality issues that your modem
is affected by that your ear can't hear. The human
voice uses a very narrow range of tones, and the human
brain can overcome many errors when listening to
someone speak. From its origination, the telephone
system was invented to speak over, and computer to
computer modem usage was never intended.
- How
about modems?- Remember that the
speed rating of any modem you may purchase is its BEST
POSSIBLE SPEED, typically under laboratory conditions,
not its typical real world speed. Up until the
de-regulation of the telephone industry, the telephone
company was responsible for designing and supporting
computer modems, after this point in history, modem
manufacturers pushed their designs to allow more and
more speed, taking the telephone network far beyond
its intended design. Additionally, 56K V.90
connections are even more demanding on the telephone
network: while modems prior to 56K were based upon the
sounds that they made over the telephone line, 56K is
based on the conversion of these sounds to digital
computer codes by the telephone company equipment.
- Line
Impairments-
As a result of line impairments, a customer
often is not satisfied with their connect speed, and
blame first their Internet Provider i.e. ElkNet, or
their telephone company. The Telecommunications
Industry Association issued a document (TSB37-A) that
details 168 issues that can impair modem connections,
yet few of these issues would noticeably affect voice
conversations. The screeching sounds that modems make
when they first connect are their way of testing these
168 issues to see how clean that particular call is so
they know how fast they can connect. These tests have
to be made for each call, as these impairments will
change not only between each call, but even during a
call. When they change during a call typically is what
causes you to get disconnected in mid-session.
- What
about the phone company?-
In the state of Wisconsin, the Public Service
Commission has recognized these impairment issues when
they passed PSC 160.031 Wisconsin Administrative Code,
at which time they set the data speed requirement for
dial up telephone lines at 9,600 bits/second. If your
connect speed is at least 9.6Kbps, then your telephone
service is meeting the requirements of the voice grade
telephone line you are paying them for. In a nutshell,
if you can call whom you want and a voice conversation
can be understood, then you are getting what you are
paying for.
- Telco
Equipment-
As part of the evolution of the telephone
system, many telephone companies have or are in the
process of upgrading to digital computer based
telephone switches. The older analog telephone
systems simply sends the sounds that are made
on a telephone, while the newer digital
telephone systems convert these sounds into
computer codes. This allows them to
increase capacity as demand for telephone lines
grows.
- Conversion-
The path that a telephone call takes
may make the conversion between the analog sounds that
originate from your telephone or modem to the
digital format many times before getting to
it's destination. 56K modems have an absolute
requirement that this conversion only occur ONCE,
otherwise they won't work above the old maximum speed
of 33.6Kbps.
- Pair-Gaining-
There is one more issue that affects many customers,
and will grow more prevalent over time, and that is
the issue of Pair-Gaining. One of the most expensive
aspects of the telephone industry is the installation
of the wires going between the telephone company and
their customers, known as the Physical Plant. Burying
cables or installing it on telephone poles is very
expensive, so plant engineers attempt to forcast
future need to try and avoid having to re-install or
expand cable. As new housing or business developments
are built, along with increased demand for fax,
computer, teen lines etc., this demand can often
surpass the capacity that was anticipated. Remember
that much of this physical plant was installed before
the home office, computer, and Internet growth
started. One technology that was developed by the
telephone industry to meet this demand is known as
Pair-Gaining, and allows the telephone companies to
connect multiple telephone lines and numbers over one
physical pair of wires, all without affecting the
voice quality of these lines. Yet is does affect your
modem, typically limiting it to a top connect speed of
26,400 bits/second. And you may have no warning of
when it can happen in your area. Your neighbor may
order a new line for their children, or for their fax
machine, or you yourself may order a new line. To
supply these additional lines to you or your neighbor,
they might have to use Pair-Gain on the the physical
line currently used by your computer. When that
physical line used to only be used by your modem, now
two telephone numbers go over it, and your best
connect speed is impaired. This is completely within
the rights of your local telephone company, as long as
the individual line to your computer can still support
the mandated 9.6Kbps and as long as the voice quality
is acceptable, again recall that Voice Conversation is
what you are paying for.
- Who
to blame?- The telephone connection
between your modem and ElkNet is NOT part of the
ElkNet service, and is completely outside of our
control. There is nothing ElkNet can do to improve
your connect speed, but there are some tips we can
suggest to possibly improve the part of the call
between your modem and where your local telephone
company connects to your home/business (see
Tips ).
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