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T
ROUBLESHOOTING AND
O
NLINE
H
ELP
R
ESOURCES
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 m odem.
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
.