CopperOptics PairGain PG-Flex FCS-719 User manual

PG-FLEX 23" CENTRAL OFFICE TERMINAL SHELF
Model List Number Part Number CLEI Code
FCS-719 4 150-1319-04 VAMCEE0ARA
PAIRGAIN TECHNOLOGIES, INC.
ENGINEERING SERVICES TECHNICAL PRACTICE
SECTION 363-719-104-02
Revision History of this practice.
Revision 02— June 2, 1997
A) Correct wire-wrap pin dimensions

Section 363-719-104 June 2, 1997 Revision 02
ii PairGain Engineering - Plant Series PG-Flex FCS-719
TABLE OF CONTENTS
A. PRODUCT OVERVIEW................................................................................................................1
1. Description and Features.....................................................................................................1
2. Specifications.....................................................................................................................2
B. FUNCTIONAL DESCRIPTION.....................................................................................................2
3. Operational Capabilities .....................................................................................................2
4. Backplane Connections.......................................................................................................4
C. INSTALLATION AND TEST........................................................................................................15
5. Unpacking.........................................................................................................................15
6. Pre-Provisioning—HDSL Lines.........................................................................................15
7. Mounting...........................................................................................................................16
8. Wiring...............................................................................................................................16
9. Turn-Up and Testing..........................................................................................................22
10. Troubleshooting..............................................................................................................22
11. Technical Support...........................................................................................................22
D. WARRANTY AND COMPLIANCE.............................................................................................23
12. Warranty.........................................................................................................................23
13. Certification....................................................................................................................23
E. ABBREVIATIONS.........................................................................................................................24
14. Abbreviations .................................................................................................................24
USING THIS TECHNICAL PRACTICE
Three types of messages, identified by icons, appear in the text:
A note informs you of special circumstances.
A caution indicates the possibility of equipment damage.
A warning indicates the possibility of personal injury.
Copyright 1997 PairGain Technologies, Inc.
PairGain is a registered trademark, and PG-Flex is a trademark of PairGain Technologies, Inc.

Revision 02 June 2, 1997 Section 363-719-104
PG-Flex FCS-719 PairGain Engineering - Plant Series Page 1
A. PRODUCT OVERVIEW
1. Description and Features
1.1 The PairGain
®
PG-Flex  FCS-719 List 4 23-inch Central Office Terminal (COT) Shelf
(Figure 1) supports:
•one alarm unit or PGTC Interface unit common to all systems in the shelf
•four PG-Flex subscriber carrier systems where each system comprises one Line Unit and one to
three Channel Units (for a shelf maximum of four line units and 12 channel units)
Additionally, the shelf provides termination points for alarms, power, metallic bypass pair, auxiliary
power pairs when using a doubler, and subscriber circuits (located on the backplane at the rear of the
shelf). The List 4 COT shelf provides cable adapters with 25-pair Amphenol connector terminations
for the subscriber circuits.
Figure 1. FCS-719 COT Shelf
Use the List 4 FCS-719 COT 23-inch Shelf only with a List 4x (or higher) FRE-765
Remote Terminal Enclosure.
1.2 Features of the PG-Flex FCS-719 COT Shelf are:
•universal mounting brackets for installation into a 23-inch equipment rack
•wire-wrap connections for HDSL, alarms, metallic bypass pairs, and auxiliary power pairs when
using a doubler
•screw terminal connections for frame ground and Central Office (CO) battery
•DB-25 connector for Network Management Analysis (NMA) communications
•25-pair Amphenol cable adapters for connection to CO lines
•25-pair Amphenol connector for PGTC test interface

Section 363-719-104 June 2, 1997 Revision 02
Page 2 PairGain Engineering - Plant Series PG-Flex FCS 719
2. Specifications
Electrical Characteristics
Power .........................................................-48 Vdc CO battery
Environmental
Operating Temperature...............................-40° F to +150° F (-40° C to +65° C)
Operating Humidity....................................5% to 95% (non-condensing)
Operating Elevation.................................... -200 feet to 13,000 feet (-60 m to 4,000 m)
Physical
Dimensions
Height.................................................. 07.00 in. (17.8 cm)
Width................................................... 23.00 in. (58.4 cm)
Depth...................................................11.75 in. (29.9 cm)
Weight.................................................15.00 lb. (06.8 kg)
B. FUNCTIONAL DESCRIPTION
3. Operational Capabilities
3.1 Each system (one Line Unit and one to three Channel Units) can support up to 24 subscriber
channels. Each Channel Unit can provide four (4) or eight (8) channels, depending on the service
offered. Services offered are:
•Plain Old Telephone Service (POTS)
•Integrated Services Digital Network (ISDN)
A label on the FCS-719 shelf indicates numbering for the Line and Channel
Units. When the Line Units are a List 1 or 2, black numbers indicate sequential
Channel Unit numbering 1 through 12. When the Line Units are List 3 or higher,
blue numbers indicate Channel Unit numbering 1 through 3 for each of the
four systems.
3.2 Tables 1 and 2 show how to utilize channels, dependent on the Channel Unit (four or eight channels)
and the type of subscriber service (POTS or ISDN) selected.

Revision 02 June 2, 1997 Section 363-719-104
PG-Flex FCS-719 PairGain Engineering - Plant Series Page 3
Table 1. COT Shelf Circuit Utilization
Channel Unit Service Configurations
Channel Unit 4-Channel POTS 8-Channel POTS 4-Channel ISDN 4-Channel DDS
T/R 1 Ckt 1 Ckt 1 Ckt 1 Ckt 1 Tx
T/R 2 Ckt 2 Ckt 2 Ckt 2 Ckt 1 Rcv
T/R 3 Ckt 3 Ckt 3 Ckt 3 Ckt 2 Tx
T/R 4 Ckt 4 Ckt 4 Ckt 4 Ckt 2 Rcv
T/R 5 Ckt 5 Ckt 3 Tx
T/R 6 Ckt 6 Ckt 3 Rcv
T/R 7 Ckt 7 Ckt 4 Tx
T/R 8 Ckt 8 Ckt 4 Rcv
Table 2. Channel Unit Circuit Utilization
System 1 System 2 System 3 System 4
CU 1
(CU 1) CU 2 (CU 2) CU 3 (CU 3) CU 4 (CU 1) CU 5 (CU 2) CU 6 (CU 3) CU 7 (CU 1) CU 8 (CU 2) CU 9 (CU 3) CU 10 (CU 1) CU 11 (CU 2) CU 12 (CU 3)
ckt 1 ckt 1 ckt 1 ckt 1 ckt 1 ckt 1 ckt 1 ckt 1 ckt 1 ckt 1 ckt 1 ckt 1
ckt 2 ckt 2 ckt 2 ckt 2 ckt 2 ckt 2 ckt 2 ckt 2 ckt 2 ckt 2 ckt 2 ckt 2
ckt 3 ckt 3 ckt 3 ckt 3 ckt 3 ckt 3 ckt 3 ckt 3 ckt 3 ckt 3 ckt 3 ckt 3
ckt 4 ckt 4 ckt 4 ckt 4 ckt 4 ckt 4 ckt 4 ckt 4 ckt 4 ckt 4 ckt 4 ckt 4
ckt 5 ckt 5 ckt 5 ckt 5 ckt 5 ckt 5 ckt 5 ckt 5 ckt 5 ckt 5 ckt 5 ckt 5
ckt 6 ckt 6 ckt 6 ckt 6 ckt 6 ckt 6 ckt 6 ckt 6 ckt 6 ckt 6 ckt 6 ckt 6
ckt 7 ckt 7 ckt 7 ckt 7 ckt 7 ckt 7 ckt 7 ckt 7 ckt 7 ckt 7 ckt 7 ckt 7
ckt 8 ckt 8 ckt 8 ckt 8 ckt 8 ckt 8 ckt 8 ckt 8 ckt 8 ckt 8 ckt 8 ckt 8
Channel Unit numbers shown on top are for a List 1 or 2 Line Unit. CU numbers shown on bottom in parentheses
are for a List 3 or higher Line Unit. CU is a Channel Unit.

Section 363-719-104 June 2, 1997 Revision 02
Page 4 PairGain Engineering - Plant Series PG-Flex FCS 719
4. Backplane Connections
4.1 Section 4.2 provides the connector pinouts located on the backplane for the Alarm or PGTC Interface
Unit, Line Unit, and Channel Unit connectors.
Section 4.3 provides connectors and termination points located on the backplane for:
•CO power (TB1) and CO battery return (TB2)
•frame ground
•Local Area Network (LAN)
•data
•HDSL, test, composite clock, auxiliary power pairs, and external ACO (alarm cutoff) switch
•alarm or PGTC test interface
•subscriber lines
4.2 Table 3 lists the FCS-719 connectors (Figure 1) and where each is described in this practice.
Table 3. FCS-719 List 4 Card Connectors
Connector/Fuse Go to Table On page(s)
Alarm Unit or PGTC Interface Unit 4 5
Line Unit Connectors (Systems 1 through 4) 5 6
Channel Unit Connectors (System 1 through 4) 6 7 and 8
Use the Information in tables 4 through 6 for diagnostic and troubleshooting
procedures under the direction of an authorized PairGain technical support
representative.

Revision 02 June 2, 1997 Section 363-719-104
PG-Flex FCS-719 PairGain Engineering - Plant Series Page 5
Table 4. Alarm Unit or PGTC Interface Unit Connector
J1-C Pin J1-C Signal J1-B Pin J1-B Signal J1-A Pin J1-A Signal
1 LAN 1 LGND (CDS) 1 LGND (CDS)
2 N/C 2 INHIBIT 2 N/C
3 PGTC_TIP1 3 SLEEVE1 3 TESTIN-T_1
4 PGTC_RING1 4 SLEEVE2 4 TESTIN-R_1
5 PGTC_TIP2 5 SLEEVE3 5 TESTIN-T_2
6 PGTC_RING2 6 SLEEVE4 6 TESTIN-R_2
7 PGTC_TIP3 7 OH1 7 TESTIN-T_3
8 PGTC_RING3 8 OH2 8 TESTIN-R_3
9 PGTC_TIP4 9 OH3 9 TESTOUT-T_1
10 PGTC_RING4 10 OH4 10 TESTOUT-R_1
11 N/C (BURN-IN) 11 PROCEED1 11 TESTOUT-T_2
12 LOCK1 12 PROCEED2 12 TESTOUT-R_2
13 LOCK2 13 PROCEED3 13 TESTOUT-T_3
14 LOCK3 14 PROCEED4 14 TESTOUT-R_3
15 LOCK4 15 SEIZE 15 TESTOUT-T_4
16 TMAJ 16 SEZBY 16 TESTOUT-R_4
17 +5_2 17 TSTALM 17 +5_1
18 NMA_TX 18 NMA_RX 18 NMA_DTR
19 NMA_DSR 19 NMA_TCLK 19 NMA_RCLK
20 NMA_BUS_1 20 NMA_BUS_2 20 TESTIN-T_4
21 NMA_BUS_3 21 NMA_BUS_4 21 TESTIN-R_4
22 CC1TIP 22 CC1RING 22 EXT_ACO
23 CC2TIP 23 CC2RING 23 8KHZ_CC
24 SHELF_ID_NO 24 SHELF_ID_COM 24 SHELF_ID_NC
25 MAJ_AUD_NO 25 MAJ_AUD_COM 25 MAJ_AUD_NC
26 MAJ_VIS_NO 26 MAJ_VIS_COM 26 MAJ_VIS_NC
27 MIN_AUD_NO 27 MIN_AUD_COM 27 MIN_AUD_NC
28 MIN_VIS_NO 28 MIN_VIS_COM 28 MIN_VIS_NC
29 FUSEALARM 29 MAJORALARM 29 MINORALARM
30 BATTERY- 30 BATTERY- 30 BATTERY-
31 BATTERY+ 31 BATTERY+ 31 BATTERY+
32 PROTGND 32 GND 32 GND

Section 363-719-104 June 2, 1997 Revision 02
Page 6 PairGain Engineering - Plant Series PG-Flex FCS 719
Table 5. Line Units Connector
System Line Unit Connector
11 J2
22 J7
3 3 J12
4 4 J17
Pin Signal* Pin Signal*
1 PROTGND 2 PROTGND
3 N/C 4 N/C
5 HDSLTIP1EX_n6 HDSLTIP2EX_n
7 HDSLRING1EX_n8 HDSLRING2EX_n
9 N/C 10 N/C
11 BATTERY+ 12 BATTERY+
13 -48_n14 -48_n
15 BATTERY- 16 BATTERY-
17 8KHZ_CC 18 N/C (BURN-IN)
19 TSYNC_n20 TSIG_n
21 TCLK_n22 TSER_n
23 GND 24 RSYNC_n
25 RSIG_n26 RCLK_n
27 RSER_n28 GND
29 SDA_n30 CSYNC_n
31 FUSEALARM 32 SCL_n
33 +5_n34 +5_n
35 GND 36 GND
37 -5_n38 -5_n
39 NMA_BUS_n40 CID3
41 CID2 42 CID1
43 MAJORALARM 44 MINORALARM
45 TESTIN-T_n46 TESTIN-R_n
47 TESTOUT-T_n48 TESTOUT-R_n
49 N/C 50 N/C
51 BYPASS-T_n52 BYPASS-R_n
53 HDSLTIP1_n54 HDSLTIP2_n
55 HDSLRING1_n56 HDSLRING2_n
57 N/C 58 N/C
59 PROTGND 60 PROTGND
* Where n is 1, 2, 3, or 4 for Systems 1, 2, 3, or 4, respectively.

Revision 02 June 2, 1997 Section 363-719-104
PG-Flex FCS-719 PairGain Engineering - Plant Series Page 7
Table 6. Channel Unit Connectors
System Channel Unit Connector
11J3
24J8
3 7 J13
4 10 J18
System Channel Unit Connector
12 J4
25 J9
3 8 J14
4 11 J19
Pin Signal* Pin Signal* Pin Signal* Pin Signal*
1 PROTGND 2 PROTGND 1 PROTGND 2 PROTGND
3 TIPEX01_n 4 RINGEX01_n 3 TIPEX05_n 4 RINGEX05_n
5 TIPEX02_n 6 RINGEX02_n 5 TIPEX06_n 6 RINGEX06_n
7 TIPEX03_n 8 RINGEX03_n 7 TIPEX07_n 8 RINGEX07_n
9 TIPEX04_n 10 RINGEX04_n 9 TIPEX08_n 10 RINGEX08_n
11 BATTERY+ 12 BATTERY+ 11 BATTERY+ 12 BATTERY+
13 -48_n 14 -48_n 13 -48_n 14 -48_n
15 BATTERY- 16 BATTERY- 15 BATTERY- 16 BATTERY-
17 8KHZ_CC 18 N/C (BURN-IN) 17 8KHZ_CC 18 N/C (BURN-IN)
19 TSYNC_n 20 TSIG_n 19 TSYNC_n 20 TSIG_n
21 TCLK_n 22 TSER_n 21 TCLK_n 22 TSER_n
23 GND 24 RSYNC_n 23 GND 24 RSYNC_n
25 RSIG_n 26 RCLK_n 25 RSIG_n 26 RCLK_n
27 RSER_n 28 GND 27 RSER_n 28 GND
29 SDA_n 30 CSYNC_n 29 SDA_n 30 CSYNC_n
31 N/C 32 SCL_n 31 N/C 32 SCL_n
33 +5_1 34 +5_1 33 +5_1 34 +5_1
35 GND 36 GND 35 GND 36 GND
37 -5_1 38 -5_1 37 -5_1 38 -5_1
39 N/C 40 GND 39 N/C 40 GND
41 GND 42 GND 41 GND 42 GND
43 GND 44 N/C 43 GND 44 N/C
45 TESTIN-T_n 46 TESTIN-R_n 45 TESTIN-T_n 46 TESTIN-R_n
47 GND 48 GND 47 GND 48 GND
49 TESTOUT-T_n 50 TESTOUT-R_n 49 TESTOUT-T_n 50 TESTOUT-R_n
51 TIP01_n 52 RING01_n 51 TIP05_n 52 RING05_n
53 TIP02_n 54 RING02_n 53 TIP06_n 54 RING06_n
55 TIP03_n 56 RING03_n 55 TIP07_n 56 RING07_n
57 TIP04_n 58 RING04_n 57 TIP08_n 58 RING08_n
59 PROTGND 60 PROTGND 59 PROTGND 60 PROTGND
*Where n is 1 on System 1, 2 on System 2, 3 on System 3, and 4 on System 4.
(continued on next page)

Section 363-719-104 June 2, 1997 Revision 02
Page 8 PairGain Engineering - Plant Series PG-Flex FCS 719
Table 6. Channel Unit Connectors (continued)
System Channel Unit Connector
13J5
2 6 J10
3 9 J15
4 12 J20
Pin Signal* Pin Signal*
1 PROTGND 2 PROTGND
3 TIPEX09_n 4 RINGEX09_n
5 TIPEX10_n 6 RINGEX10_n
7 TIPEX11_n 8 RINGEX11_n
9 TIPEX12_n 10 RINGEX12_n
11 BATTERY+ 12 BATTERY+
13 -48_n 14 -48_n
15 BATTERY- 16 BATTERY-
17 8KHZ_CC 18 N/C (BURN-IN)
19 TSYNC_n 20 TSIG_n
21 TCLK_n 22 TSER_n
23 GND 24 RSYNC_n
25 RSIG_n 26 RCLK_n
27 RSER_n 28 GND
29 SDA_n 30 CSYNC_n
31 N/C 32 SCL_n
33 +5_1 34 +5_1
35 GND 36 GND
37 -5_1 38 -5_1
39 N/C 40 GND
41 GND 42 GND
43 GND 44 N/C
45 TESTIN-T_n 46 TESTIN-R_n
47 GND 48 GND
49 TESTOUT-T_n 50 TESTOUT-R_n
51 TIP09_n 52 RING09_n
53 TIP10_n 54 RING10_n
55 TIP11_n 56 RING11_n
57 TIP12_n 58 RING12_n
59 PROTGND 60 PROTGND
*Where n is 1 on S
y
stem 1, 2 on S
y
stem 2, 3 on S
y
stem 3,
and 4 on System 4.

Revision 02 June 2, 1997 Section 363-719-104
PG-Flex FCS-719 PairGain Engineering - Plant Series Page 9
4.3 Table 7 lists the FCS-719 backplane connectors (Figure 2) and where each is described in
this practice.
Table 7. FCS-719 List 4 Backplane Connectors
Connector Go to
Table On page
Battery, CO Battery Return, and Frame Ground 8 10
LAN 9 10
Data 10 10
HDSL, Bypass Pair, Channel Unit Test, Composite Clock,
Auxiliary Power Pairs, Frame Ground, External ACO switch 11 11
Alarm 12 12
Subscriber Terminations 13 13
PGTC 14 14
FRAME GROUND
S
u
b
scr
ib
er term
i
nat
i
on
system 4 (P4)
Subscriber termination
system 3 (P3) Subscriber termination system 2 (P2) Data connector (J21) LAN
connector (J22)
S
u
b
scr
ib
er term
i
nat
i
on
system 1 (P1)
PGTC
test
i
nter
f
ace
(P26)
Frame
Ground (G1)
Battery
RTN
(TB2)
Battery
(TB1)
Figure 2. FCS-719 COT Shelf Backplane

Section 363-719-104 June 2, 1997 Revision 02
Page 10 PairGain Engineering - Plant Series PG-Flex FCS 719
Table 8. Battery, CO Return and Frame Ground
Connector Type Function
TB1 Screw Battery (-48 Vdc)
TB2 Screw CO battery return
G1 Screw Frame Ground (Protection Ground)
CO BATTERY RETURN is separate from FRAME GROUND in PG-Flex.
CKT GND and CO BATTERY RETURN are connected inside the PG-FLEX Line
Unit, but are not connected on the backplane.
Table 9. LAN Connector
Connector Type Function
J22 BNC (Not currently used)
Table 10. Data Connector
Connector Type Function
J21 DB-25 (F) (Not currently used)

Revision 02 June 2, 1997 Section 363-719-104
PG-Flex FCS-719 PairGain Engineering - Plant Series Page 11
Table 11. HDSL, Test, And Miscellaneous Connectors
System* Connector Type Function
System nHDSL_n_T1
HDSL_n_R1 .045 in. Wire-Wrap Ti
p
and Rin
g
terminations for HDSL Pair #1 of S
y
stem nto Remote
Terminal n. +130 Vdc is sim
p
lexed on this line for
p
owerin
g
the
Remote Terminal.
System nHDSL_n_T2
HDSL_n_R2 .045 in. Wire-Wrap Ti
p
and Rin
g
terminations for HDSL Pair #2 of S
y
stem nto Remote
Terminal n. -130 Vdc is sim
p
lexed on this line for
p
owerin
g
the
Remote Terminal.
System nPWR_n_T1
PWR_n_R1 .045 in. Wire-Wrap S
y
stem nauxiliar
y
Power Pair #1. Used for additional
p
ower to the
RT when a Doubler is used.
System nPWR_n_T2
PWR_n_R2 .045 in. Wire-Wrap S
y
stem nauxiliar
y
Power Pair #2. Used for additional
p
ower to the
RT when a Doubler is used.
System nBYPASS_n_T
BYPASS_n_R .045 in. Wire-Wrap Termination for the metallic b
yp
ass
p
air into COT S
y
stem nfrom
RT n.
System n TEST_n_T IN
TEST_n_R IN .045 in. Wire-Wrap Test connection lookin
g
into the CO e
q
ui
p
ment for the selected
subscriber for S
y
stem n. This connection must be set u
p
throu
g
h the
PG-Flex RS-232 maintenance port.
System nTEST_n_T OUT
TEST_n_R OUT .045 in. Wire-Wrap Test connection lookin
g
into the CO Channel Unit of the selected
subscriber for S
y
stem n. This connection must be set u
p
throu
g
h the
PG-Flex RS-232 maintenance
p
ort. In some a
pp
lications, this
p
air will
be jumpered to the BYPASS pair from RT n.
CC1_IN_TIP
CC1_IN_RING .045 in. Wire-Wrap Com
p
osite Clock #1. Used for
p
rimar
y
s
y
nchronization to CO timin
g
.
These
p
ins ma
y
be dais
y
chained to additional Com
p
osite Clock in
p
uts
in other PG-Flex systems.
CC2_IN_TIP
CC2_IN_RING .045 in. Wire-Wrap Com
p
osite Clock #2. Used for secondar
y
s
y
nchronization to CO
timin
g
. These
p
ins ma
y
be dais
y
chained to additional Com
p
osite
Clock inputs in other PG-Flex systems.
FRAME_GND
CKT_GND .045 in. Wire-Wrap Frame ground. This is isolated from CO battery ground in PG-Flex.
EXT_ACO
CKT_GND .045 in. Wire-Wrap External Alarm Cutoff. A momentar
y
connection between EXT_ACO
and circuit ground will silence the PG-Flex audible alarms.
INHIBIT .045 in.
Wire-Wrap PGTC Inhibit connection. This
p
in should not be connected to an
y
other Inhibit pins in PG-Flex or other DLC systems.
GND
CKT_GND .045 in. Wire-Wrap CO battery return. This is isolated from frame ground in PG-Flex.
*Where n is 1 on System 1, 2 on System 2, 3 on System 3, and 4 on System 4.

Section 363-719-104 June 2, 1997 Revision 02
Page 12 PairGain Engineering - Plant Series PG-Flex FCS 719
Table 12. Alarm Termination
Posts Contact
Post
NO*
Contact
Post
COM*
Contact
Post
NC*
FUNCTION 
SHELF_ID 1 2 3 Shelf ID indicates a major or minor shelf alarm is active.
MAJ_AUD 4 5 6 Indicates a ma
j
or alarm. The alarm can be silenced usin
g
the ACO
button. Connect this rela
y
to the ma
j
or alarm audible indicator of
the CO alarm system.
MAJ_VIS 7 8 9 Indicates a ma
j
or alarm. This alarm cannot be disabled.
Connect this rela
y
to the ma
j
or alarm visual indicator of the
CO alarm system.
MIN_AUD 10 11 12 Indicates a minor alarm. The alarm can be silenced usin
g
the ACO
button. Connect this rela
y
to the minor alarm audible indicator of
the CO alarm system.
MIN_VIS 13 14 15 Indicates a minor alarm. This alarm cannot be disabled.
Connect this rela
y
to the minor alarm visual indicator of the
CO alarm system.
* For the rela
y
contacts, NO is normall
y
o
p
ened, NC is normall
y
closed, and COM is common.
 All relays provide form “C” contacts.
Use the cable adapter (part number 120-1110-02) that is installed on the FCS-719
List 4 Shelf to ensure the subscriber terminations shown in Table 13.

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PG-Flex FCS-719 PairGain Engineering - Plant Series Page 13
Table 13. Systems 1 through 4 Subscriber Terminations Using Cable Adapters
Channel Unit Circuit Connector Pn*
Tip Connector Pn* Ring Tip Ring
1 26 1 WH/BL BL/WH
2 27 2 WH/OR OR/WH
3 28 3 WH/GN GN/WH
1 4 29 4 WH/BN BN/WH
530 5 WH/SL SL/WH
631 6 RD/BL BL/RD
732 7 RD/OR OR/RD
833 8 RD/GN GN/RD
1 34 9 RD/BN BN/RD
2 35 10 RD/SL SL/RD
3 36 11 BK/BL BL/BK
2 4 37 12 BK/OR OR/BK
538 13 BK/GN GN/BK
639 14 BK/BN BN/BK
740 15 BK/SL SL/BK
841 16 YL/BL BL/YL
1 42 17 YL/OR OR/YL
2 43 18 YL/GN GN/YL
3 44 19 YL/BN BN/YL
3 4 45 20 YL/SL SL/YL
546 21 VI/BL BL/VI
647 22 VI/OR OR/VI
748 23 VI/GN GN/VI
849 24 VI/BN BN/VI
*Where n is 1 on S
y
stem 1, 2 on S
y
stem 2, 3 on S
y
stem 3, and 4 on S
y
stem 4.
Shaded terminations are used only with 8 Channel POTS and DDS Units.

Section 363-719-104 June 2, 1997 Revision 02
Page 14 PairGain Engineering - Plant Series PG-Flex FCS 719
Table 14. PGTC Connector Pinouts
Pin Signal Pin Signal
1 PGTC_RING1 26 PGTC_TIP1
2 PGTC_RING2 27 PGTC_TIP2
3 PGTC_RING3 28 PGTC_TIP3
4 PGTC_RING4 29 PGTC_TIP4
5 SLEEVE2 30 SLEEVE1
6 SLEEVE4 31 SLEEVE3
7 OH2 32 OH1
8 OH4 33 OH3
9 PROCEED2 34 PROCEED1
10 PROCEED4 35 PROCEED3
11 LOCK2 36 LOCK1
12 LOCK4 37 LOCK3
13 N/C 38 N/C
14 N/C 39 N/C
15 N/C 40 N/C
16 N/C 41 N/C
17 TMAJ 42 TSTALM
18 N/C 43 N/C
19 N/C 44 N/C
20 N/C 45 N/C
21 N/C 46 N/C
22 SEZBY 47 SEIZE
23 N/C 48 N/C
24 N/C 49 N/C
25 N/C 50 N/C

Revision 02 June 2, 1997 Section 363-719-104
PG-Flex FCS-719 PairGain Engineering - Plant Series Page 15
C. INSTALLATION AND TEST
5. Unpacking
5.1 Upon receipt of the equipment:
1Unpack 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.
2Check the contents against the packing list to ensure complete and accurate shipment. If the
shipment is short or irregular, contact PairGain as described in Section 12. If you must store the
equipment for a prolonged period, store the equipment in its original container.
6. Pre-Provisioning—HDSL Lines
6.1 The HDSL transmission scheme uses two pairs between the COT and Remote Terminal (RT). The
wire pairs should have identical electrical make-ups. Differences in total wire length, wire gauge,
bridge taps, and exposure to crosstalk should be kept to a minimum. Pair isolation (Tip-Ring, Tip-
Ground, and Ring-Ground) must be ≥100 kΩ.
6.2 The wire pairs from the COT to the RT must meet the following design guidelines:
•Nonloaded cable only.
•Multigauge is restricted to two gauge changes, except for stubbing or fusing.
•Total bridge taps may not exceed 2.5 kft. No single bridge tap may exceed 2.0 kft.
6.3 The distance limitation for HDSL transmission is based on a maximum signal attenuation of 35 dB.
Since signal attenuation decreases as cable size increases, the larger the gauge (i.e., 19 AWG vs.
26 AWG), the greater the distance between the COT and the RT. Table 15 identifies these distances
(at a cable temperature of 68°F).
Table 15. 12/24 Channel HDSL Transmission Distance
Gauge Loop Length Resistance
19 AWG
0.9 mm 22.8 kft 7.0 km 367 Ω
22 AWG
0.6 mm 16.1 kft 4.9 km 521 Ω
24 AWG
0.5 mm 12.3 kft 3.7 km 638 Ω
26 AWG
0.4 mm 9.0 kft 2.7 km 750 Ω

Section 363-719-104 June 2, 1997 Revision 02
Page 16 PairGain Engineering - Plant Series PG-Flex FCS 719
7. Mounting
7.1 The COT shelf mounts in a standard 23 inch CO equipment bay. The shelf has a mounting height
requirement of 7 inches.
1Align the shelf (Figure 3) universal mounting brackets with the four vertical mounting holes.
2Install the mounting screws.
Figure 3. Mounting the FCS-719 COT Shelf
8. Wiring
8.1 Sections 8.2 through 8.9 describe how to connect the FCS-719. Section 8.10 verifies the installation.
All wiring to the COT shelf is performed on the back side of the backplane.
Follow the provisions of the National Electric Code (current edition) for wiring
external to the product(s).
8.2 Frame Ground and Battery. Connect the frame ground and battery:
1Remove the clear Plexiglas™ cover.
2Remove the fuse in the equipment bay fuse panel for the circuit where the PG-Flex CO battery
wire will be terminated.
Follow local grounding practices to ensure a good frame ground connection to
PG-Flex. This frame grounding is required for secondary voltage protection of
the PG-Flex equipment.
3Connect the frame ground (Figure 4):
aConnect one end of the frame ground wire to the grounding lug G1 (Frame Ground).
bConnect the other end of the frame ground wire to the CO ground
termination point.

Revision 02 June 2, 1997 Section 363-719-104
PG-Flex FCS-719 PairGain Engineering - Plant Series Page 17
To CO Ground
Termination Point
Frame Ground
(G1)
Figure 4. Connecting the Frame Ground (Protection Ground)
Use 12 AWG or larger wire (or multiple wires of a smaller gauge) to ensure good
power connections to PG-Flex.
4Connect the battery (Figure 5):
aConnect the wires used for the CO battery and the CO battery return to TB1 (-48 Vdc) and
TB2 (BATT RTN) screw terminals.
bConnect the wire for the CO battery return from TB2 on the COT shelf to the CO battery
return termination point.
cConnect the CO battery wire from TB1 on the COT Shelf to the equipment bay fuse panel
termination point.
TB1 (-48 Vdc)
TB2 (BATT RTN)
Figure 5. Connecting the CO Battery

Section 363-719-104 June 2, 1997 Revision 02
Page 18 PairGain Engineering - Plant Series PG-Flex FCS 719
8.3 HDSL Lines. Connect the HDSL lines (Figure 6). Note that nis:
•1 for System 1
•2 for System 2
•3 for System 3
•4 for System 4
1Connect the HDSL Pair #1 onto wire-wrap pins HDSL_n_T1 (Tip) and HDSL_n_R1 (Ring) on
the COT shelf for system n.
2Connect the HDSL Pair #2 onto wire-wrap pins HDSL_n_T2 (Tip) and HDSL_n_R2 (Ring) on
the COT shelf for the same system n.
3Repeat steps 1 and 2 for each system installed.
Figure 6. Connecting the HDSL Lines