User Manual

TROUBLESHOOTING AND ONLINE HELP RESOURCES
96
analog phone line compatible with the 56K
ITU standard or x2 technology, and an
Internet provider or corporate host site
compatible with the 56K ITU standard or
x2™ technology are necessary for these
high-speed downloads.
Possible Solutions:
Check http:// www.3com.com/56k for a list
of ISPs that observe the 56K ITU standard
and/or offer x2 technology.
Call your phone company to find out if your
phone line is compatible with the ITU-T
standard for 56K and/ or is
x2-compatible. You can also run
the U.S. Robotics Line Test utility to
determine if your line is compatible. To run
the test, visit
http:// www.3com.com/56k
PROBLEM:
Your modem won’t connect at 2400
bps with a 2400 bps modem.
Diagnosis:
The modem you’re trying to connect with
could be an older model that doesn’t support
error control.
Possible Solution:
You can disable error control on your
modem by typing AT&M0 in terminal mode
and pressing ENTER. Now try placing the
call to the remote modem again. When
finished, reset your modem to enable the
error control features. In terminal mode, type
ATZ and press ENTER.