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Technical
Support
"I
was disconnected from the internet while taking an exam in ANGEL, how is this corrected?"
If
you have been obtaining successful connections, without any disconnects
until recently, several factors can contribute to noticeably poorer
performance.
1. Outdated Modem Software
Often, updating "Modem Drivers" and/or updating modem
"Firmware" can enhance performance and increase a modem's
tolerance to line noise or errors as explained later in this article.
Modem manufacturers are constantly working to improve the quality of
connections made by their modems. To get the most out of your computer
and the AOL service, it is important to maintain the highest performance
possible from your modem. As new technologies are developed and bugs are
discovered and corrected, modem manufacturers release updated firmware
or modem drivers so customers who own one of their modems can take
advantage of these fixes and/or developments. Some modems use firmware
or modem drivers while other modems use both firmware and modem drivers.
2. Limited System Resources
Software Controlled and Controllerless Modems are very dependent on
system resources. It is possible that a new program or software
application, recently installed on your computer, has reduced the amount
of system resources available to other applications or hardware.
Memory-resident programs such as memory managers, device drivers, and
terminate-stay-resident (TSR) programs can cause modem connections to
fail. It may be necessary to run fewer applications simultaneously, in
order to get these types of modems to work more efficiently.
3. Software Conflicts
In some cases when consideration is given to pinpoint the exact time
connections started getting worse, a corresponding event can be
identified such as the installation of another software program. Due to
the number of different possibilities, some investigation may be
necessary to track down the root cause of the problem.
4. Modifications or Additions to Phone
Equipment
New phone equipment in the home such as Fax Machines, Answering
Machines, Additional Extensions, or Home Networking equipment may be the
source of additional noise on the phone line. Testing for these problems
can be as easy as temporarily removing other equipment (especially if it
has recently been added) and seeing if the disconnect problems improve.
(Remember when testing for problems by disconnecting other phone
equipment, it is not the power supply which needs to be unplugged but
the phone cord attached to the jack on the wall which should be
temporarily removed.) Even the installation of additional telephone
lines run through various parts of the house can be problematic if they
were not correctly installed.
5. Human Interaction
In a home with multiple telephones, a person picking up another
extension in the house can cause a modem to disconnect. Fax machines or
other computer modems can also pick up the line and start dialing
without sensing that the line is clear by listening for a dial tone.
There is usually no way for the other person to know that the phone line
is being used by a modem until they pick up the receiver and listen. At
this point it is often too late to avoid having the modem drop the
connection.
6. Call Waiting
If call waiting is enabled while you are signed on to AOL, your modem
connection will be interrupted when the call-waiting signal is received.
To turn off call waiting
1. On the Sign On screen, click Setup.
2. On the AOL Setup screen, click Expert Setup.
3. On the Locations tab in the Connection Setup window, click the number
(connection) you want to edit once to select it. (The number
(connection) is indented beneath the location name.)
4. Click Edit.
5. In the Edit Number (Connection) window, select the Dial [*70,] to
disable call waiting check box.
6. Edit the default prefix if it is not correct, and make sure there is
a comma after it.
-- You will have to edit each number in the location and make this
change.
-- Typical codes are *70 for Touch-Tone service and 1170 for rotary
service. Contact your local telephone company for the deactivation code
in your area.
-- When you sign off and your modem hangs up the phone, Call Waiting is
reactivated.
7. Noise
Modem connections are more susceptible to noise than voice
communication. The original telephone lines were created to carry verbal
communications. When noise interferes with the signal on the phone line,
the computer's modem has trouble talking to the AOL modem on the other
end. If the modem cannot be sure it is still connected because the noise
is so bad, or the PC is too busy to control it, it can lose contact with
the AOL service entirely, causing the modem to disconnect. Line noise,
which sounds like static, popping, or other conversations on a phone
line, usually indicates noise on the line. However noise that can cause
problems with a modem may not always be detected by simply listening to
the receiver.
Electromagnetic interference can be a factor in causing your modem to
disconnect. Most residential-grade phone wiring is susceptible to such
interference because of its lack of shielding. Phone lines should not
run parallel to other wiring for extended distances. The phone line
shouldn't pass too near digital electronics such as computers and CD
players. Radio-frequency (RF) electronics such as TVs, radios, and
microwave ovens as well as devices with motors such as fans and
appliances are sources of electromagnetic interference. Other sources
may include lights with dimmers or lights which use fluorescent bulbs
and electrical appliances that use a lot of power.
Older phones can also create line noise, since they were never designed
to take into consideration modem use. And poor quality phone wiring is a
common problem in older houses. The wiring may have been adequate for
voice phone calls, but today's fax machines and modems require
higher-quality wiring.
How
do I send ANGEL questions to ECC support staff?
Your
first contact for support should be your Instructor.
If
there is a technical issue your instructor can't resolve we will do our
best to resolve the problem for you. You can contact our support team for
assistance at http://helpdesk.ecc.edu
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