Communications Failure
The D9112 goes into Communications Failure after ten unsuccessful attempts to reach the receiver. Follow the Phone Line Trouble procedure to verify that there is no problem with the phone lines at the D9112 installation. If the phone lines are good, monitor the lines (preferably at the receiver) for the symptoms listed below.
Symptom
Diagnosis
Remedy
The line rings but the D6500 receiver does not pick up.
RING indicator on line card does not light. Can not hear ring with headset at receiver location.
The line rings but the receiver does not pick up.
RING indicator on line card lights. Can hear ring with test set at receiver location.
The D9112 reaches a busy signal for all ten attempts to reach the receiver.
Line is not ringing at the receiver.
Line card in receiver may be faulty.
Calls are not reaching the receiver.
1.Verify that the lines are correctly connected to the receiver.
2.Verify that correct prefixes and phone numbers for the receiver have been programmed into the D9112.
If completing the steps above does not correct the problem, contact your telephone company repair service.
Review receiver manuals for trouble shooting procedures.
1.Verify that correct prefixes and phone numbers for the receiver have been programmed into the D9112.
2.Verify that the phone lines are not shorted between the phone company's equipment and the receiver by placing a call to the number for the receiver. If you hear the line ring, but the ring detector doesn't light, or if you hear a busy signal and the green on line (OL) indicator is not lit, call the phone company for service.
The receiver answers the call and provides an acknowledgment tone, but the communicator does not transmit reports.
The receiver's call load is too great.
The receiver is not producing the correct acknowledgement tone.
Additional line cards and phone lines may be needed for the receiver.
Verify that the receiver is producing a 1400 Hz, 2300 Hz, or Modem II acknowledgment tone.
The D136 relay in J10 for ground start phone systems is inserted incorrectly.
Insert the D136 relay in socket J10 correctly. See the Relays section of this manual for instructions.
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