ADC FCS-717 2B Technical Practice page 26

19" central office terminal shelf
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Installation and Test
System*
Connector
System n
HDSL_n_T1
HDSL_n_R1
System n
HDSL_n_T2
HDSL_n_R2
System n
PWR_OUT T1
PWR_OUT R1
System n
PWR_OUT T2
PWR_OUT R2
System n
BYPASS_n_T
BYPASS_n_R
System n
TEST_n_T IN
TEST_n_R IN
System n
TEST_n_T OUT
TEST_n_R OUT
CC1_TIP
CC1_RING
CC1_TERM
CC2_TIP
CC2_RING
CC2_TERM
FRAME_GND
CKT_GND
EXT_ACO
CKT_GND
INHIBIT†
BAT RTN
CKT GND
16
Table 12. HDSL, Test, And Miscellaneous Connectors
Type
Function
.045 in.
Tip and Ring terminations for HDSL Pair #1 of System n to Remote
Wire-wrap
Terminal n. The HDSL termination point for each system is: P5 for
system 1, P6 for system 2, and P7 for system 3. -130 Vdc is simplexed on
this line for powering the Remote Terminal.
.045 in.
Tip and Ring terminations for HDSL Pair #2 of System n to Remote
Wire-wrap
Terminal n. The HDSL termination point for each system is: P5 for
system 1, P6 for system 2, and P7 for system 3. +130 Vdc is simplexed on
this line for powering the Remote Terminal.
.045 in.
System n auxiliary Power Pair #1. Used for auxiliary power to the RT
Wire-wrap
when using a PG-Flex doubler unit. The auxiliary power termination point
for each system is: P9 for system 1, P10 for system 2, and P11 for system
3.
.045 in.
System n auxiliary Power Pair #2. Used for auxiliary power to the RT
Wire-wrap
when using a PG-Flex doubler unit. The auxiliary power termination point
for each system is: P9 for system 1, P10 for system 2, and P11 for system
3.
.045 in.
Termination for the metallic bypass pair into COT System n from RT n.
Wire-wrap
The termination point for each system is: P13 for system 1, P14 for system
2, and P15 for system 3.
.045 in.
Test connection looking toward the CO switch of the selected subscriber
Wire-wrap
for System n. This connection must be set up through the PG-Flex Craft
port. The termination point for each system is: P17 for system 1, P18 for
system 2, and P19 for system 3.
.045 in.
Test connection looking toward the subscriber of the selected circuit for
Wire-wrap
System n. This connection must be set up through the PG-Flex Craft port.
The termination point for each system is: P17 for system 1, P18 for system
2, and P19 for system 3.
.045 in.
Composite Clock #1 used for primary synchronization to CO timing.
Wire-wrap
These pins (P21) can be cascaded. Terminate on the CC1_TERM pins on
the last shelf in the cascade.
A 133Ω termination resistor (provided on the FCS-717 List 2B COT shelf
backplane) is placed across CC1_TIP and CC1_RING by installing a
jumper between CC1_TIP and CC1_TERM.
.045 in.
Composite Clock #2 used for secondary synchronization to CO timing.
Wire-wrap
These pins (P27) can be cascaded. Terminate on the CC2_TERM pins on
the last shelf in the cascade.
A 133Ω termination resistor (provided on the FCS-717 List 2B COT shelf
backplane) is placed across CC2_TIP and CC2_RING by installing a
jumper between CC2_TIP and CC2_TERM.
.045 in.
Frame ground is isolated from CO battery ground in PG-Flex.
Wire-wrap
.045 in.
External Alarm Cutoff (P23, pins 1 and 2). A momentary connection
Wire-wrap
between EXT_ACO and circuit ground silences the PG-Flex audible
alarms.
.045 in.
When a PGTC interface card is installed, the PGTC inhibit connection pin
Wire-wrap
is used to sense/indicate whether a shared bypass pair is available or is
currently in use by another system.
.045 in.
CO battery return. This is isolated from frame ground in PG-Flex. The
Wire-wrap
BAT RTN and CKT GND wire-wrap posts are jumpered together on the
FCS-717 List 2B COT shelf backplane.
January 6, 2003
SCP-FCS717-022-03H
FCS-717 List 2B

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