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SYMPTOM(S):
DID line does not work, or there is a fast-busy
signal.
Probable Causes: DID service may not be activated; or
The number of DID digits may not be set
correctly in the user.cfg file; or
There is a polarity problem because the telephone
wiring may be reversed. That is, although the
output of the TR114 has the correct polarity
across the telephone line’s two wires (tip and
ring), a wiring reversal could exist elsewhere in
the building.
Solution: Verify that the number of DID digits is set
correctly in the user.cfg file.
Make sure that DID service is active by testing
the line using the procedures in Testing DID
Channels with Active Service on page 3-11.
If the telephone test works, but you still have
problems with your DID line, make sure the
telephone wiring is not reversed.
SYMPTOM(S):
DID line was working but now it stops working.
Probable Cause: Power from the DID power supply has been
interrupted; or
Service may have been discontinued by the telco.
Solution: Make sure the DID line is connected to the
TR114 and that the board is receiving -48V DC
power from the DID power supply.
Call one of the telephone numbers in your block
of DID numbers. If a busy signal sounds
immediately, the service has probably been
disconnected by the telco.
Testing and Troubleshooting
3-15