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Frequently Asked Questions (FAQ) About Modems

Q: Why can I not connect at 56k?
Q: If Windows is reporting a fast connection speed, why is the internet moving so slowly?
Q: What is the difference between a software based modem and a hardware based modem?
Q: How can I tell if I have a software-based modem?
Q: What are some common software-based modems?
Q: How do I find out what brand of modem I have?



Why can I not connect at 56k?

When 56k modems were first developed, it was estimated that they would work WELL on approximately 10% of the phone lines in America. These percentages have not changed much over the years. Even then (and now) FCC regulations limit connection speeds to a maximum of 53k. One may think that the introduction of Fiber-optics in their area would make the connection better. However, with the way modems operate, they work best over pure, copper phone lines. Fiber-optic lines will usually hurt connections more than they help. Here are some other factors that will affect your connection speed:
Routing through the telephone company (telco).
When a call leaves your home, it is routed through the telco's many switches. Each switch can only support so many simultaneous calls. If a switch fills up, the call must be routed differently. This will change throughout the day. Sometimes the route the call takes is not as "clean" at one time in the day versus others. This "line noise" or "garbage" will confuse the modem and cause it to connect at slower speeds.
Hardware vs Software-based modems
The modem is another big factor for connection speeds. Hardware-based modems typically have better results in the long run when it comes to establishing a faster and more reliable connection. They also tend to do a better job of filtering out line noise (via error control) in comparison to software-based modems
Phone cord connection
The way the phone cords are hooked up to the modem are another factor. If possible, you want to connect a phone cord STRAIGHT from the wall jack to the back of the modem. Do not hook up devices along the way, such as fax machines, splitters, caller-ID boxes, etc. Any device connected between the wall and the modem can potentially induce line noise and interference. Also make sure the phone cord is not running by any heavy electrical devices, such as a lava lamp or being stuffed behind a monitor. Any object that give off an EMF (electromagnetic field) can induce interference. You also want to make sure the phone cord is not crushed, crumpled up, or under anything heavy. This has the potential of breaking the wires, which can cause a faulty connection.
Init string
Sometimes an init string for your modem can improve the connection. To find an init string for your modem, go here.
For more information, try this site.

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If Windows is reporting a fast connection speed, why is the internet moving so slowly?

The speed reported by windows refers to the inital connection speed. The actual speed of your connection with fluctuate up and down as you are using the connection, based on current phone line conditions and line noise. Sometimes Windows will receive an "unknown" connection speed, so it will report the PORT SPEED of the connection, instead of the actual speed. If you ever see connection speeds such as 38,400, 57,600, or 115,200, these are port speeds and not actual connect speeds. Windows could say you are connected at 57,600, but in actuality you are connected at 28,800. Sometimes adding an init string to your modem can help improve it's performance. To look for an init string for your modem, go here.

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What is the difference between a software based modem and a hardware based modem?

Whether a modem is hardware based or software based is a BIG factor when it comes to a reliable, fast, stable connection.

Hardware-based Modem
A hardware-based modem performs its common tasks using two physical chips on the modem called the Data Pump and the Controller. These chips help the modem do things such as error control, flow control, compression, etc. By having these chips on the modem, no burden is placed on the computer's CPU to performs these calculations. This results in better overall reliability and success. In general, this modem will cost more than a software-based modem simply because it has more physical components, which are more expensive to manufacture than copies of a software modem driver.
Software-based Modem
A software-based modem works in a similar fashion, except for the chips. These modems are either missing one of the chips (Data Pump or Controller) or possibly BOTH. The computations that are normally done by these chips are done via software that is installed on the computer (hence the name "software-based" modem). This puts the burden of the computation on the computer's CPU, making the connection much more sensative to changes in the system, such as the number of open applications and how much system resources each application is occupying. In general, these are the modems you will see on sale at the store for $10-$20, simply because it costs the manufacturers LESS than that to create the modem.
General rule of thumb: For modems, you get what you pay for.

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How can I tell if I have a software-based modem?

There are a few good indications as to whether you have a software based modem:
  • The package says "Requires Pentium Class CPU or higher"
  • The package says "Requires Windows" or is designated as a "Windows Modem"
  • It costs ~$10 (virtually EVERY good hardware based modem costs more than this)
  • It is identified as an HSP, HCF, or Soft k56 Modem

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What are some common software-based modems?

Here are a few common software-based modems:
  • Conexant HCF
  • Diamond SupraMax
  • HSP Micromodem
  • Lucent (or LT) Winmodem
  • Motorola SM56
  • PCtel (anything)
  • Rockwell HCF
  • Soft k56
  • USRobotics Win (or Winmodem)

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How do I find out what brand of modem I have?

You can't always tell what brand of modem you have by looking at the driver installed in Windows. Theoretically, you can actually install ANY driver for ANY modem, whether it matches or not. However, if you install the incorrect driver, the modem will either not function, or perform poorly.

To know for sure what type of modem you have, you much talk to the modem directly. For instructions on how to "ATI" your modem, go here.

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