User`s guide

User’s Guide 27
PROBLEM DIAGNOSIS POSSIBLE SOLUTION
Your modem will not
connect at 2400
bps with a 2400 bps
modem.
The modem you are trying
to connect with, could be an
older model that does not
support error control.
You can disable error control on
your modem by typing the following
command in the Terminal Mode:
AT&M0 and press 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. ATZ4
or AT&F1 are often the best reset
strings, as they restore hardware
flow control settings.
Your screen keeps
displaying random
garbage characters.
You could have a conflict
with the remote modem’s
settings for word length,
parity, and stop bits.
Your software and modem
might not be set to the
same flow control settings.
The best flow control
settings might not be
enabled on your modem.
Your Internet Service
Provider (ISP) may not
provide x2 service.
The phone connection
might not be able to handle
high speed data
transmission.
Set your modem’s word length,
parity, and stop bits the same as the
remote modem or BBS you are
calling.
The common settings are:
Data bits - 8
Stop bits - 1
Parity - none
Make sure the software and modem
have the same flow control rate
settings, either hardware
[RTS/CTS] or software [xon/xoff]
flow control.
Type this command in Terminal
Mode to load the optimal hardware
flow control settings, AT&F1 and
press ENTER.
Make sure your ISP offers x2
technology or find an ISP who is
capable of providing x2 service.
Try lowering the connection speed
you are using.