3Com 1.024.1644-00 manual Possible Solution

Troubleshooting

PROBLEM: Both modems sound like they are exchange carrier signals, but fail to establish a connection.

POSSIBLE SOLUTION

You may have a poor line connection. Place the call again. Calls are routed differently each time.

POSSIBLE SOLUTION

Your phone jack may have been wired incorrectly. Contact your telephone company. Ask them to make sure the tip and ring are on the inside pair of wires.

PROBLEM: Your 56K modem cannot achieve a 56K Internet connection.

POSSIBLE SOLUTION

This modem is capable of 56 Kbps downloads. However, the download speeds you experience may be lower due to varying line conditions and other factors. Uploads from users to server equipment travel at speeds up to 31.2 Kbps. An analogue phone line compatible with the ITU V.90 standard or 3Com’s proprietary 56K technology, and an Internet provider or corporate host site with the ITU V.90 standard or 3Com’s proprietary 56K technology are necessary for these high-speed downloads. Check http://www.3com.com/56k for a list of ISPs that observe the 56K ITU standard and/or offer 3Com’s proprietary 56K technology.

POSSIBLE SOLUTION

The phone lines in your area may not be 56K compatible. Call your phone company to find out if your phone line is compatible with the ITU standard for 56K and/or is compatible with 3Com’s proprietary 56K technology.

POSSIBLE SOLUTION

You may have devices between the modem and the phone jack. There should be no line splitters, fax machines, or other devices between the modem and the wall jack.

56K Voice Faxmodem Internal - User’s Guide 35