56k Connectivity

Compatibility / interoperability issues with V.90, K56flex, and X2

Network Tallahassee's 56k modems support the ITU-T V.90 56k Modem Standard.
Although K56Flex may work when dialing into us, we do not support it because V.90 is the actual standard.
K56Flex was developed by Lucent Technologies, Inc. and Rockwell Semiconductor Systems, Inc. (now Conexant Systems, Inc.)
X2 was developed by USRobotics, Inc.

Troubleshooting

Note: Network Tallahassee cannot guarantee connection speeds advertised by modem manufacturers. Your connection speeds are highly dependent on your modem's quality, firmware version, and the phoneline conditions between your modem and the phone company. Generally speaking, the further away you are from the phone company, the lower the line-quality. As a general rule, in order to be able to obtain 56k modulation, the maximum wiring distance between the user and the phone company is up to about 18,000 feet, however there ARE exceptions to this.
56k connectivity cannot occur under certain phoneline routing schemes (between the user and the phone company).

The most common problems associated with 56k connections can almost always be remedied by upgrading your modem's firmware to the latest version of V.90. Keep in mind that eventhough you may have just bought your modem/computer, that does not necessarily mean that the modem is up-to-date.
See also: 56K.COM: Troubleshooting 56K Modems

Finding the version of V.90, K56flex, or X2 in your modem

Windows 2000/XP:
  1. Click on the Start button, then Settings, then Control Panel.
  2. Double-click on the "Phone And Modem Options" icon.
  3. Click on the "Modems" tab.
  4. Select your modem and click on the "Properties" button.
  5. Click on the "Diagnostics" tab.
  6. Click on the "Query Modem" button.
  7. V.90 and K56Flex: Take note of the line next to "ATI3"--in the example screenshot below, the V.90 version is:
    V2.083H2-K56_DLP
    X2 and USRobotics-based modems: Look for any dates next to any of the "ATI7" lines. The location of the version and/or date may vary between modem manufacturers.
Windows 95/98:
  1. Click on the Start button, then Settings, then Control Panel.
  2. Double-click on the "Modems" icon.
  3. Click on the "Diagnostics" tab.
  4. Click on (to highlight) the COM port that is associated with your modem.
  5. Click on the "More info..." button.
  6. V.90 and K56Flex: Take note of the line next to "ATI3"--in the example screenshot below, the V.90 version is:
    V2.083H2-K56_DLP
    X2 and USRobotics-based modems: Look for any dates next to any of the "ATI7" lines. The location of the version and/or date may vary between modem manufacturers.
    Control Panel | Modem-Diagnostics | More-info

Other operating systems: Send us email or call us.

Modem Firmware Update Links