Section 363-719-100
December 18, 1996
Revision 03
Page 22
PairGain Engineering - Plant Series
PG-Flex FCS-719
8.1.5
If external audible and/or visual alarm indications are required, connect the audible and visual alarm
leads from the central office alarm panel to the COT. Refer to Table 11 for the alarm pin
connections and their related functions.
8.1.6
Connect the composite clock. Refer to Table 10 for information on connecting the composite clock
terminations to the office clock supply. These leads may be cascaded to multiple PG-Flex COT
Shelves. Termination resistors may be wire wrapped to these pins; follow local practice on selecting
the value of the termination resistor and determining which shelf should have these resistors.
8.1.7
Connect the subscriber lines. Provide one 25-pair female Amphenol cable for each PG-Flex system.
Use connectors P1 through P4 to connect the PG-Flex COT shelf to the central office switch
subscriber line circuits at the MDF.
8.1.8
Insert a 12 amp fuse in the equipment bay's fuse panel for the circuit where the PG-Flex central office
battery wire is terminated.
8.1.9
Verify connections:
The following verifications should be done before any cards are inserted into
the FCS-719.
1
Verify that there is a minimum of -42 V dc and a maximum of -56 V dc between the TB1
(–48 V) and TB2 (BATT RTN) screw terminals on the COT shelf.
2
Visually verify the HDSL lines are terminated properly and with the correct orientation.
3
Verify that the HDSL lines are "dry":
a There should be 0 V dc between the tip and ring, tip and ground, and ring and ground of each
of the HDSL circuits terminated on the shelf.
b There should be > 100 kohm resistance between the tip and ring, tip and ground, and ring and
ground of each of the HDSL circuits terminated on the shelf.
8.1.10
Replace the clear Plexiglas cover removed in section 8.1.1.
