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• If the Initialization String is something more than just AT, perform a test
transaction as described in the section Performing Test Transactions (see
page 81). If the test transaction results in a communications error, return to this
section and continue with step 7.
• If the Initialization String is only AT, you will need to contact PCCharge
Technical Support at (877) 659-8981.
7. If you've attempted a test transaction after setting up your modem using the Detect
Modem Settings button and it didn't work, try the following steps. First, return to the
Manual Modem Setup window as described in steps 1 and 2.
8. Select WH1 from the Modem drop-down list (in the Modem Initialization section of the
Manual Modem Setup window). Click the Validate button. PCCharge will attempt to
validate the settings you've chosen. Click the OK button.
9. Perform a test transaction as described in the section Performing Test Transactions
(see page 81). If the test transaction results in a communications error, return to this
section and continue with step 10.
10. Repeat step 8, but use GS Special (instead of WH1) from the Modem drop-down
list. Perform a test transaction as described in the section Performing Test
Transactions (see page 81). If the test transaction still results in a communications
error, contact PCCharge Technical Support at (877) 659-8981.
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Technical Details: Most modems are Hayes compatible. This means that
they recognize the original Hayes command set. However, many of the newer
and faster modems use compression techniques to achieve their high speeds.
While these modems will work fine on most bulletin board systems and dial-up
networks designed to operate at these speeds, most financial service networks
(credit card processing companies) do not operate at these speeds or use
these techniques. Consequently, if you have a new modem that operates at
33.6 baud or 56.7 baud it is very likely you will need to modify the modem's
initialization string to force it to connect at 1200 baud, disable data
compression, and disable error correction. This information can normally be
found in the modem's manual or by contacting the modem manufacturer.
Although we try to provide modem settings for as many modems as possible,
new products come out constantly. You may need to call your modem
manufacturer and ask them: "How do I get my modem to act like a plain 1200
baud Hayes modem?" In general, if the built-in Windows communications
program HyperTerminal cannot access the modem then PCCharge will not
work either. If this is the case, this problem will need to be resolved before
PCCharge will function properly.
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