This is Modemsite.com
Do you have a modem-related question?
FORUM56.com
Modemsite's free public modem board: Q&A

Modemsite.com - Helping you get the best performance from your modem
 Troubleshooting News Technical Search
 Home Forum 56 Premium Site Map
HomeTroubleshooting  •  Access Numbers  •  3Com/USR Test Line ò
 Introduction | Troubleshooting Procedure  | Init Strings  |  Handshakes  |  Access Numbers

3Com/USR Test Line:

3Com has set up modems that will attempt to determine if you have a 56k-compatible line. The modems are located in Illinois, so it involves a short (1-2 minute) toll call for most people.

The line test number is 1-847-330-2780 

When you CONNECT, log in as LINE TEST, and within a few seconds, a report will come back indicating whether your line supports 56k, probably supports 56k, or probably does not support 56k.

THIS TEST HAS LIMITATIONS: It may give false positive or negative results. The test is based upon the receiving modem's analysis of Y11 data also available in 3Com/USR client modems. If you have, or can borrow, a 3Com/USR modem, doing the test as described in my A/D Conversion Check Page is much more reliable.

False positives: may not be totally false - you may be limited to 56k connects on just some of your calls - like only long-distance (toll) calls.

False negatives: sometimes the impairments encountered over the long-distance network are such that an accurate assessment of your call quality for local calls cannot be determined.

 -> Back to Access Numbers

Home  |  Links  |  Send Feedback  |  Privacy Policy  | Report Broken Link
Legal Page  |  Author's Web Sites   |  Log In   
 

Modemsite.com ©1998-2022 v.Richard Gamberg. All rights reserved.