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MODEM FAQ
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| How can I modify
or add to my modem init string under Windows 95? |
- NOTE: This is
an advanced feature. If you are not familiar with modems or what
initializations strings can do, it is not recommended you add or
augment your modem's initialization strings. Please see the
documentation that came with your modem for further instructions.
- Click the "Start" button, usually located in the lower
left-hand corner of your screen
- Click on "Settings"
- Click on "Control Panel"
- Click on the "Modems" icon
- Click on your modem once to highlight it, then click the
"Properties" button
- Click on the "Connection" tab at the top of the window
and click the "Advanced" button
- In the field labeled "Extra settings" add the
appropriate values
- After you've input the values, click "Ok", click
"OK" again, and then
- click "Close" to close the "Modem
Properties" window.
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| How can I turn
off x2 once my software is upgraded? |
- NOTE: This
information refers to USR Courier and Sportster modems. For any
other USR modem using x2 technology, please your modem users guide.
For Couriers, disable x2 support on your modem with the init string
command:
- ATS58=1.
- To reenable x2 type the following init string in modem
properties:
- ATS58=0.
- For Sportsters, disable x2 support on your modem with the init
string command
- ATS32.5=1
- To reenable x2,type the following init string in modem
properties:
- ATS32.5=0
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| If my modem
hangs, and I lose the carrier, did my ISP crash? |
It's extremely
unlikely this is the case. If you can call right back and get
connected, you were most likely experiencing a telephone line problem.
There is also a chance it could be a modem problem, especially if
there are other symptoms, such as error messages. If you call back and
the phone rings without connecting, contact support.
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| How can I figure
out if I have line noise? |
You can contact
your local phone company and ask them to test your lines (NOTE: Some
phone companies are unable or unwilling to do this depending on their
system and contractual arrangements). If you can prove that your voice
calls are degraded, you'll have a better chance of getting help,
whether it's a simple solution, or something more complex, like the
reinstallation of your phone line.
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| How can I turn
v.90 on and off? |
The following init
string will disable v.90 on courier modems:
- s58=32 (turns off v.90)
- s58=0 (turns on v.90)
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| My
modem is a 28.8, 33.6, or 56k, but connects at a lower speed. Why? Is
there something wrong with your network or the modems you use? |
"28.8
modem" and "56k modem" is a bit misleading. More
appropriately, they should be named "28.8 capable modem" or
"56k capable modem". A standard modem does over 2000 line
tests when establishing a connection in order to determine the maximum
speed of the line you're using. Those lines tests look for many
factors, all of which can contribute to your line speed being less
than optimal. The maximum line speed is influenced by the quality of
the wiring of your physical phone line; the distance between you and
your phone company's central office, switching equipment, and how they
route your call.
Considering all these factors, there are few areas that will get
consistent 28.8, 33.6, or 56k connections. Even the newer modems which
support 33.6 - 56kbps are influenced by the same factors. The majority
of phone lines will only be able to make a connection at less than
optimal speed.
While connections at 24k or 26.4k can be expected with 28.8 or 33.6
modems, very slow connections, such as 19.2k, may be indicative of a
phone line problem. You may want to contact your phone company for a
line test if you get consistently slow connection speeds.
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| How can I dial
if I have call-waiting messages saved through my service? |
Some phone
companies alert you to call-waiting messages through a pulsed-dialtone
when you first pick up the receiver. This will interfere with your
ability to connect to your ISP because the modem will not sense a true
dialtone. To circumvent this on USR modems you can set a string: S6=N
where "N" is the number of seconds the modem will try to
detect a dialtone. If that number ("N") is set longer than
the amount of time that the pulsed-dialtone persists the modem will
sense the dial tone even if call-waiting messages are waiting. Our
recommendation is to set the string to S6=5, giving the modem five
seconds to detect a dial tone.
NOTE: This approach usually works with Couriers and Sportster USR
modems. If you have a different type of modem (USR or not), please
check your modem's documentation to ensure this can/will work for you.
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| My modem keeps
disconnecting me or, I lost the carrier. |
SPII.NET will
automatically disconnect you if you are idle for 30 minutes. An idle
connection is when no information is being transmitted between your
computer and your ISP. If you aren't idle and keep losing the carrier,
you may want to increase the S10 register on your modem. The S10
register regulates delay time before a carrier signal loss. You will
need to refer to your modem's user guide or contact the modem
manufacturer for more information on how to do this. Increasing the
S10 register will help if you have an especially noisy phone line and
will likely solve your sudden disconnect problems.
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| When
I connect to my ISP, my modem says "CONNECT 57600", or
"CONNECT 115200". Am I really connected at that speed? |
No. The maximum
allowed speed for analog modems is 53333. The "CONNECT"
message your modem reports is one of two things. Your modem may be
reporting the speed at which your computer is sending information to
your modem. This speed can be 19200, 38400, 57600 or 115200 (on most
machines). If you want your modem to report the true connection speed,
it's as simple as adding the string "W2" to your modem's
init string
(NOTE: this may not work on all modems, please see the documentation
that came with your modem for assistance regarding this procedure).
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| I
recently upgraded my modem to a faster external modem. The new modem
seems as slow as my old modem. Why? |
- NOTE: This
addresses the issue of modem speed only if your computer is
relatively old and you have a high-speed external modem hooked up to
your computer's serial port. This does NOT apply to internal modems.
External modems rely on your serial port in order to transmit
information between your computer and your modem. Older computers
may have a serial chip that can't keep up with a newer modem's
transfer speed. Specifically, The 8250 and 16450 serial chips can
only handle up to around 9600 baud (the rate of transfer). These
chips work fine with slower modems, but not with those supporting
faster rates. The 16550 serial chip (an updated chip) has a maximum
transfer speed up to 115200. Here's how you can check to see if you
what type of chip you have:
- Windows 3.1:
- Drop to a DOS command line Type "MSD" (without quotes)
and select "COM Ports"
- Under the COM port your modem is on, check the "UART"
setting. If it is 8250, 16450, then you have the older serial chip
and should get a newer serial card capable of handling higher
speeds. If it's 16550, then you have the latest serial chip.
- If you don't have the MSD program, check with your computer's
manufacturer about the type of serial chip used in your machine.
- Win95/98:
- Right-click on the "My Computer" icon on your
computer's desktop
- Scroll down and click on "properties"
- Click on the "Device Manger" tab at the top of the
window
- Scroll down and double-click on "Ports (COM & LPT)"
- Double-click any of the COM ports (preferably the one your modem
is using)
- Click on the "Port Settings" tab at the top of the
window
- You should see "Bits per second"
- Click on the drop-down arrow next to the text box and scroll
through the choices. If there is a setting for 115200 then your
computer has the newest serial chip.
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| I keep getting
"COMM Overrun" errors when using Trumpet Winsock. Why? |
- The most likely
reason is due to a slow serial chip. Additional help can be found above.
If you're using Windows 3.1, you can check your system configuration
file for other problems. To do this, there are a few things you can
try:
- Open your File
Manager and click on "File" then click on "Run"
- On the Command Line, type "sysedit" (without quotes)
and click "OK"
- One of the windows that opens will be called "system.ini"
- Look for the "comm.drv=" line in the
"[boot]" section. If you see "comm.drv=comm.drv",
you are likely using the original comm driver which was designed
for slower modems. We suggest you try another comm driver.
- You can search for an updated driver on the Internet. If that
doesn't solve the problem, try adding the following to the
"[386Enh]" section the system.ini file:
- comXfifo=1
- comXbuffer=1024
comboosttime=8
- Where X is the number of the COM port your modem is using (most
often COM 2).
- ADDITIONAL INFO: Some video drivers using the s3 video chip can
cause overruns as well. s3 has driver updates that cure this
particular problem. Please contact your computer's manufacturer or
video card manufacturer for specific driver updates.
- NOTE: When your computer is accessing local disk(s), Windows
briefly halts any I/O to the COM ports for a short period of time.
This will, in many cases, cause overrun errors, when the Winsock
is unable to access the COM port. The only way to avoid this
problem is to upgrade to Windows 95 or 98.
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| When I connect
online my mouse freezes up. Why? |
This problem occurs
when your mouse and modem are sharing the same IRQ (Interrupt Request)
on your computer. In most cases, COM1 and COM3 share IRQ 4,
and COM2 and COM4 share IRQ3. If your mouse is on COM1 and your modem
on COM3, they will conflict for the computer's attention. You will
need to place your modem and mouse on complementary IRQs (i.e. Modem
on COM2 and mouse on COM1). Certain modems have jumper settings that
will allow you to change the modem's IRQ. You will need to refer to
your modem's documentation for instructions If your modem doesn't
offer this option, you will need to contact the manufacturer of your
computer. If contacting your computer manufacturer is not an option,
try contacting a computer repair store.
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| Why do I keep
getting the message, "NO DIAL TONE"? |
There are a few
causes for this, please check the following list to narrow down the
issue:
- Is your
telephone cable securely seated in the correct modem port (line in)?
If your modem is plugged in to the wrong port in the back of your
modem, it will not work.
- Is the cable coming from your modem securely seated in the wall
jack?
- Is your telephone cable bad? (you can check to see if it is by
plugging it into a working phone and seeing if it operates
normally)
- Is the wall jack functioning properly? Plug a phone into the
wall jack (preferably using the same cable you use for your modem)
and see if the phone functions properly
- Check to make sure all phones, answering machines, etc. are
"on the hook"
- Make sure you can get a dial tone on every other phone in your
house
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- Are you using a surge suppressor, try removing the surge suppressor
and connecting directly to a wall jack
- Many phone companies use a pulsed-dial tone to indicate
call-waiting or voicemail messages. Your modem will not be able to
detect a dial tone if it detects a pulsed-dial tone. Please see the
above workaround for this problem.
If all else fails, please contact technical support. Be advised,
however, that if the above does not fix your issue, there may be a
hardware problem (i.e. a bad modem).
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| How do I turn
off call waiting/forwarding? |
Click on the
"My Computer" icon located on your computer's main screen
(also called the Desktop)
- Click on "Dial-Up Networking (DUN)
- Double-click on the icon you use to connect to the Internet
- Click on the "Dial Properties" button
- Check the box next to "To disable call waiting dial:"
and put in the number to disable call waiting (in Windows 98 you can
choose form a drop-down list). The number is usually either *70,
70#, or 1170.
- Alternately, you may also wish to turn off call waiting in this
manner:
- Click on the "Start" button, usually located on the
lower-left hand side of your computer's main screen
- Click on "Settings" and then click on "Control
Panel"
- Double-click on the "Modems" icon
- Click on the "Dialing Properties" button
- Check the box next to "To disable call waiting dial:"
and put in the number to disable call waiting (in Windows 98 you can
choose form a drop-down list). The number is usually either *70,
70#, or 1170.
- NOTE: You may or may not have a turn off feature associated with
your particular call-waiting/forwarding plan. Please contact your
telephone company for specifics.
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| Why does my
connection sometimes seem to run slower over time? |
If you are
occasionally noticing decreased performance over a period of time when
you connect, also called "spiraling death", and own a USR
Sportster 28800 (and sometimes even the Courier V.34), then you may
need to update your modem's firmware (available at the USR web site
http://www.3com.com/56k/usr/). You may also try some of the
following:
- If possible, see if the problem persists on a different modem
- The problem may be caused by line noise. Have the phone company
test your line and have them suggest possible solutions
- If you have an external modem, turn the volume all the way down
before trying to connect
- NOTE: This problem is generally associated with your hardware and
is therefore not covered by our technical support representatives.
If you need further assistance, refer to your computer or modem's
documentation and/or manufacturer
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| Why do I
sometimes get disconnected for no apparent reason? |
- There can be
several reasons for this. Please check the following:
- Do you have call waiting? The incoming call signal can sometimes
disconnect you. To avoid this problem, you may be able to
temporarily disable Call Waiting when you make a data or fax call.
Follow these steps to disable call waiting:
- Click on the "My Computer" icon located on your
computer's main screen (also called the Desktop)
- Click on "Dial-Up Networking (DUN)
- Double-click on the icon you use to connect to the Internet
- Click on the "Dial Properties" button Check the box
next to "To disable call waiting dial:" and put in the
number to disable call waiting (in Windows 98 you can choose form
a drop-down list). The number is usually either *70, 70#, or 1170.
- Alternately, you may also wish to turn off call waiting in this
manner:
- Click on the "Start" button, usually located on the
lower-left hand side of your computer's main screen
- Click on "Settings" and then click on "Control
Panel" Double-click on the "Modems" icon
- Click on the "Dialing Properties" button
- Check the box next to "To disable call waiting dial:"
and put in the number to disable call waiting (in Windows 98 you
can choose form a drop-down list). The number is usually either
*70, 70#, or 1170. NOTE: You may or may not have a turn off
feature associated with your particular call-waiting/forwarding
plan. Please contact your telephone company for specifics.
- Are you using modem error correction? If you don't know, follow
the steps below
- Click on the "Start" button, usually located on the
lower-left hand side of your computer's main screen
- Click on "Settings" and then click on "Control
Panel"
- Double-click on the "Modems" icon
- Click once to select your modem then click on
"Properties"
- Click on the "Connection" tab at the top of the window
- Click on the "Advanced" button Check the "Use
error control" box and select either hardware or software
(refer to your modem's documentation. (NOTE: Not all modems offer
this feature. Please refer to your modem's documentation for the
specifics on this option)
- Are you running several programs the same time when you are
connected? Sometimes, this will interfere with the COM
port your modem is using, causing a dropped connection.
Is the line excessively noisy? You may need to have your phone
company test your line for noise.
Are you experiencing inclement weather? Believe it or not, bad
weather can play an important roll when it comes to line
connectivity. If you experience more frequent disconnections
during windy or rainy weather (especially if accompanied by
lightning), your disconnections may be due to poor line quality
exacerbated by poor weather, a phone line that is not grounded
properly, or other telephone line problems.
If you are still experiencing frequent disconnects, please contact
technical support. You my also need to contact your computer or
modem's manufacturer for specific solutions related to your
hardware or software.
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