US Robotics COURIER - Troubleshooting Data Transfer Issues

COURIER HIGH SPEED MODEMS
or the current environment. Try several calls, and if you still
can't get through, try calling another modem. If the second
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modem accepts your call, the problem may lie with the -
modem you first tried to call.
During Data Transfer -
Your screen displays ...
Only brackets
Check to make sure that both modems are set to the same bit
rate, word length, parity and number of Stop bits. If the settings
are correct, the problem may be with the phone line. Try the
following measures:
1. Try placing the call again. The phone company routes even
local calls differently each time you call.
2. Try calling a different modem to see if the problem persists.
The problem may be with the modem you first tried to call.
Random or garbage characters
Check to make sure that both modems are set to the same bit
rate, word length, parity, and number of Stop bits.
If the modem is set to a fixed DTE rate (&Bl) and your software
is fixed at 19.2K or 38.4K bps, the reason may be one of the
following:
1. Your computer may not support the high rate. If this is the
case, fix your software rate at 9600 bps and disable high-
speed V.32 bis modulation: ATS34=3 or ATS34 .0=1 .1=1.
2. If you use memory-resident programs (TSRs), they may be
interfering. Try disabling them before you run your com-
munications software. The same is true of disk-caching
programs.
3. Check to see that your software and the modem are set for
the same kind of flow control, either hardware or software.
Some communications programs also require that you dis-
able the kind you are not using.
0-4 Problems and Solutions
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