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Mainframe computer keeps dropping your connection
Bad faxes or can't fax
Both devices exchange carrier signals, but fail to establish a communications link
If you use memory-resident programs (TSRs-Terminate and Stay
Resident programs) or disk-caching programs, they may be interfering.
Try disabling them before you run your communications software
You must turn off the Courier V.Everything modem's result codes and
character echo (ATQ1E0). The modem at the mainframe also needs to be
set to ATQ1E0.
Make sure the fax software is set to use Class 1 fax. Refer to your fax
software's manual.
If you use memory-resident programs (TSRs-Terminate and Stay
Resident programs) or disk-caching programs, they may be interfering.
Try disabling them before you run your communications software
Make sure the Courier V.Everything modem is in the correct mode, fax
or data, depending on whether the connection is to be made with a
facsimile device or a data device.
See Chapter 2, Modes of Operation, for information on switching
between Fax and Data modes.
Make sure the proper bit rate, word length, parity and number of Sto
bits have been selected.
Synchronous operations: review the instructions in Chapter 12,
Dedicated/Leased Line and Synchronous Applications. If you've
configured the Courier V.Everything modem correctly, the problem
may be with the synchronous adapter or with the system you're trying
to call.
Send ATI4 and check to see that your modem is at the correct B
setting to connect with either an HST modem (B1 setting) or "V."
modem (B0 setting).
Make sure that your Courier V.Everything modem's connection rate
setting, &Nn, is correct for the call. If the connection rate is locked at a
speed (&N1-&N14) different from the calling modem's, the Courier
V.Everything modem hangs up. The default setting of &N0, variable
link operations, allows the two modems to negotiate the highest
possible connection rate.
Problems that Occur After Connecting
17-5
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