Bosch Appliances D9112 Communications Failure

D9112 Operation & Installation Manual
Page 73
© 1993-1996 Radionics74-06144-000-C 2/96
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.
Line is not ringing at
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.
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.
Line card in receiver
may be faulty. Review receiver manuals for trouble shooting procedures.
The D9112 reaches a
busy signal for all ten
attempts to reach the
receiver.
Calls are not reaching
the receiver. 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's call
load is too great. Additional line cards and phone lines may be needed for the receiver.
The receiver answers
the call and provides
an acknowledgment
tone, but the
communicator does
not transmit reports.
The receiver is not
producing the correct
acknowledgement
tone.
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.