US Robotics 56K Series Manual page 39

PROBLEM
Your 56K modem cannot achieve a 56K Internet connection.
POSSIBLE SOLUTION
This modem is capable of 56 Kbps downloads. However, due to varying line conditions,
the actual speeds you experience may be lower. Uploads from users to server equipment
travel at speeds up to 31.2 Kbps. An analogue phone line compatible with the V.90
standard and an Internet provider or corporate host site compatible with the V.90
standard are necessary for these high-speed downloads.
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 56K technology.
POSSIBLE SOLUTION
You may have devices between the modem and the phone socket. There should be no
line splitters, fax machines, or other devices between the modem and the wall socket.
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