Section 363-752-100
Revision 01
Page 5
7. FRONT PANEL
7.01
The front panel of the FLC-752 Channel Unit
contains the following indicators (see Figure 1):
•
ACTIVE 1, 2, 3, 4 LED Indicators
Green—the channel is off-hook.
Flashing Green—the channel is ringing (the LED
will track the ringing) or the line has been switched
to the test pair.
Off—the channel is on-hook.
•
FAULT LED Indicator
Red—a fault has been detected on the unit.
Off—no faults are detected on the unit.
C. INSTALLATION AND TEST
8. UNPACKING
8.01
Upon receipt of the equipment, proceed as follows:
1.
Unpack each container and visually inspect
it for signs of damage. If the equipment has
been damaged in transit, immediately report the
extent of damage to the transportation company
and to PairGain. Order replacement equipment
if necessary.
2.
Check the contents versus the packing list to
ensure complete and accurate shipment. If the
shipment is short or irregular, contact PairGain
as described in Section 5. If you must store the
equipment for a prolonged period, store the
equipment in its original container.
9. TURN-UP AND TESTING
9.01
Table 2 provides step-by-step turn-up and test
procedures for the FRC-752 Channel Unit.
10. TROUBLESHOOTING
10.01
Table 3 provides troubleshooting procedures based
on indications displayed by the front panel
indicators of FRC-752 Channel Unit.
TABLE 2. FRC-752 RT CHANNEL UNIT TURN-UP AND TESTING
CAUTION
Observe normal electrostatic discharge precautions when handling electronic equipment. Do not hold electronic plug-ins
by their edges. Take care not to touch components or circuitry.
Step
Operation
Action
Observe
1
Install RT
Channel
Units
a. Insert each FRC-
752 Channel Unit
into the FRE-765 RT
Enclosure.
All LEDs on the Channel Unit will turn on for approximately 2 seconds, then scan
from top to bottom, then turn off.
b. After the system
has powered up,
established HDSL
synchronized
communications, and
no calls are in
progress, observe the
Channel Unit front
panel indicators.
ACTIVE 1
off
ACTIVE 2
off
ACTIVE 3
off
ACTIVE 4
off
FAULT
off
2
Test
Subscriber
Circuits
a. Test each
subscriber circuit by
placing and receiving
calls.
ACTIVE 1 through 4 LEDs track call as described in paragraph 7.01.
