Black Box TE120A, User Manual

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CHAPTER 6: Troubleshooting
6. Troubleshooting
6.1 Testing
To test your Caller ID system, take these steps:
1. Go off-hook from an outside test line and dial the phone number of the
Caller ID system line you want to test.
2. Between the first and second rings of the phone call, the Caller ID unit’s
DATA LED should flash and the Caller ID information should be displayed or
printed by the DTE.
3. Hang up the test line.
4. Repeat steps 1 through 3 for all of the system’s phone lines.
6.2 Things to Try
Here are some problems that can occur in a Caller ID system along with some
possible causes/solutions you might want to investigate.
The Power (PWR) LED on a Caller ID unit doesn’t light.
• Make sure the power supply is securely connected to the Caller ID unit and is
plugged into a working AC outlet.
• Try to place a call to one of the lines attached to that Caller ID unit. If the
system behaves normally otherwise, that LED is defective. If the call, or the
Caller ID data, is delayed or lost, or if the unit doesn’t respond at all,
something else in the unit is defective. Call Black Box Tech Support as
described in
Section 6.3 .
Caller ID data for some or all lines isn’t printed or displayed at the DTE.
• Are the PWR and DATA LEDs of the Caller ID unit(s) attached to the affected
line(s) lit/flashing? If not, see “The Power LED doesn’t light” above.
• Make sure the cable between the DTE and the (first) Caller ID unit’s RS-232
OUT port is properly pinned and securely connected.
• If you’re daisychaining, make sure all of the system’s RS-232 OUT to RS-232 IN
cables are properly pinned and securely connected.
• Make sure that the data rate and data format settings of your Caller ID units
match those of the DTE and each other (see Section 3.2 ).