FaxModem  (250-3542)        Troubleshooting           Faxback Doc. # 2594

NOTE: Make sure the following line is in your AUTOEXEC.BAT file:

SET BITCOM=C:\BITCOM

Line 3 of the manual addendum for Bit Com is incorrect.

When you have problems transmitting data with your modem
(garbled data, intermittent errors, and so on), check to see
that :

*     The phone connection is clean and noise-free.

*     No one is talking on the telephone line.

*     The phone and all extensions are on the hook.

*     The operation speed is correct for the modem you are
      using and the modem with which you are communicating.

If you still cannot transmit data, disconnect your modem to
see if the phone line is operating correctly.  If it is, the
trouble might be in your modem.  Take it to your local Radio
Shack store for further testing and/or repair.

Lightning

Your modem has protection circuits, which meet or exceed FCC
requirements, to reduce the risk of damage from surges  in
telephone and power line currents.  However, lightning
striking near or on these lines can damage the modem.

Lightening damage is uncommon.  However, if this concerns
you or if you live in an area with frequent and or severe
electrical storms, we suggest that you unplug your
electronic equipment during the storms.

The FCC Wants You to Know

In the unlikely event that your modem causes problems on the
telephone line, the telephone company can disconnect your
service.  The telephone company attempts to notify you in
advance.  If advance notice is not practical, the telephone
company notifies you as soon as possible and advises you of
your right to file a complaint with the FCC.

Also, the telephone company can change its lines, equipment,
operations, or procedures that could affect the operation of
this modem.  The telephone company notifies you of these
changes in advance, so that you can take the necessary steps
to prevent interruption of your service.

We have designed your modem to conform to federal
regulations, and you can connect it to most telephone lines.
However, each modem (and each device, such as a telephone,
that you connect to the telephone line), draws power from
the telephone line.  We refer to this power draw as the
device's ringer equivalence number, or REN.  The REN is
shown on the bottom of your modem.

If you are using more than one device on the line, add up
all the RENs.  If the total is more than five, your
telephones might not ring.  In rural areas, a total REN of
three might impair ringer operation.

Your modem complies with Part 68 of FCC Rules.  You must,
upon request, provide the FCC registration number and the
REN to your telephone company.  Both numbers are shown on
the bottom of the modem board.

Modifying or tampering with the modem's internal components
can cause a malfunction and might invalidate your modem's
warranty.  If your modem is not performing as it should,
take it to your local Radio Shack store.  Our personnel can
assist you and arrange for service, if needed.  If the
trouble is harming the telephone lines, the telephone
company might ask you to disconnect your modem until you
have resolved the problem.

Note:  You must not connect your modem to :

*     Coin-operated systems

*     Party-line systems

*     Most electronic key telephone systems


(smm 08/27/93)