CopperOptics PairGain PG-Flex FCS-718 User manual

PG-FLEX 19" CENTRAL OFFICE
TERMINAL SHELF
Model List Number Part Number CLEI Code
FCS-718 4 150-1318-04 VAMCEC0ARA
PAIRGAIN TECHNOLOGIES, INC.
ENGINEERING PLANT SERIES TECHNICAL PRACTICE
SECTION 363-718-104-01
Revision History of this practice.
Revision 01—May 30, 1997
A) Initial Release.

Section 363-718-104 May 30, 1997 Revision 01
ii PairGain Engineering - Plant Series PG-Flex FCS-718
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........................................................................................................18
5. Unpacking........................................................................................................................18
6. Pre-Provisioning—HDSL Lines........................................................................................19
7. Mounting..........................................................................................................................20
8. Wiring..............................................................................................................................20
9. Turn-Up and Testing.........................................................................................................25
10. Troubleshooting..............................................................................................................26
11. Technical Support...........................................................................................................26
D. WARRANTY AND CERTIFICATION.........................................................................................26
12. Warranty.........................................................................................................................26
13. Certification....................................................................................................................27
E. ABBREVIATIONS.........................................................................................................................27
14. Abbreviations .................................................................................................................27
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 01 May 30, 1997 Section 363-718-104
PG-Flex FCS-718 PairGain Engineering - Plant Series Page 1
A. PRODUCT OVERVIEW
1. Description and Features
1.1 The PairGain® PG-Flex™ FCS-718 List 4 19-inch Central Office Terminal (COT) Shelf
(Figure 1) supports:

one Alarm Unit or PGTC Interface Unit that is common to both systems

two PG-Flex subscriber carrier systems where each system comprises one Line Unit and from
one to six Channel Units (for a shelf maximum of two Line Units and 12 Channel Units)
Additionally, the shelf provides termination points for alarms, power, metallic bypass pairs, 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-718 COT Shelf
Use the List 4 FCS-718 COT 19-inch Shelf only with a List 4x (or higher) FRE-765
Remote Terminal Enclosure.
1.2 Features of the PG-Flex FCS-718 COT Shelf are:

universal mounting brackets for installing in a 19- or 23-inch equipment bay

wire-wrap connections for HDSL, alarm, metallic bypass pairs, and auxiliary power pairs (when
using a doubler)

screw terminal connections for frame ground and dual Central Office (CO) battery

DB-25 connector for Network Management Analysis (NMA) communications

25-pair Amphenol cable adapters for connection to CO switch subscriber lines

25-pair Amphenol connector for PGTC test interface

Section 363-718-104 Mya 30, 1997 Revision 01
Page 2 PairGain Engineering - Plant Series PG-Flex FCS-718
2. Specifications
Electrical Characteristics
Power .......................................................................... –48Vdc 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
Mounting.....................................................................19- or 23-inch equipment rack using universal
mounting brackets
Dimensions
Height................................................................... 07.00 in. (17.8 cm)
Width.................................................................... 17.25 in. (43.8 cm)
Depth.................................................................... 11.75 in. (29.9 cm)
Weight.................................................................. 11.10 lb (05.0 kg)
B. FUNCTIONAL DESCRIPTION
3. Operational Capabilities
3.1 Each system (one Line Unit and from one to four Channel Units) shown in Figure 1 can support up to
24 or 32 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-718 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 6 for each system.
3.2 Tables 1 and 2 show how to utilize channels, dependent on the Channel Unit (4 or 8 channels) and
the type of subscriber service (i.e., POTS, ISDN) selected.

Revision 01 May 30, 1997 Section 363-718-104
PG-Flex FCS-718 PairGain Engineering - Plant Series Page 3
Table 1. Channel Unit 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. Systems 1 and 2 Circuit Assignments for COT Shelf
System 1* System 2*
Line
Unit CU 1 (CU 1) CU 2 (CU2) CU 3 (CU 3) CU 4 (CU 4) CU 5 (CU 5) CU 6 (CU 6) Line Unit CU 7 (CU 1) CU 8 (CU 2) CU 9 (CU 3) CU 10 (CU 4) CU 11 (CU 5) CU 12 (CU 6)
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
1 Ckt 4 Ckt 4 Ckt 4 Ckt 4 Ckt 4 Ckt 4 2 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
* CU numbers shown on top are for a List 1 or 2 Line Unit. CU numbers on the bottom in parentheses are for a
List 3 or higher Line Unit. CU is a Channel Unit.

Section 363-718-104 Mya 30, 1997 Revision 01
Page 4 PairGain Engineering - Plant Series PG-Flex FCS-718
4. Backplane Connections
4.1 Section 4.2 provides connector pinouts located on the backplane for Alarm or PGTC Interface Unit,
Line Units, and Channel Units.
Section 4.3 provides connectors and termination points located on the backplane for:

battery and CO battery return

frame ground

Local Area Network (LAN)

data

HDSL, test, composite clock, auxiliary power pairs, and ACO cutoff switch

alarm or PGTC test interface

subscriber lines
4.2 Table 3 lists the FCS-718 List 4 connectors (Figure 1) and where each is described in
this practice.
Table 3. FCS-718 List 4 Card Connectors
Connector/Fuse Go to Table(s) On page
Alarm Unit or PGTC Interface Unit 4 5
Line Unit Connectors (Systems 1 and 2) 5 6
Channel Unit Connectors (System 1) 6 7 thru 9
Channel Unit Connectors (System 2) 7 10 thru 12
Use the information in tables 4 through 7 for diagnostic and troubleshooting
procedures under the direction of an authorized PairGain technical support
representative. User terminations are not required on J1.

Revision 01 May 30, 1997 Section 363-718-104
PG-Flex FCS-718 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 (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 N MA_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 363-718-104 Mya 30, 1997 Revision 01
Page 6 PairGain Engineering - Plant Series PG-Flex FCS-718
Table 5. Line Unit Connectors
System Line Unit Connector
11 J2
2 2 J10
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 N/C (CID3)
41 GND (CID2) 42 GND (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 HDSL_TIP1_n54 HDSL_TIP2_n
55 HDSL_RING1_n56 HDSL_RING2_n
57 N/C 58 N/C
59 PROTGND 60 PROTGND
* Where nis 1 on system 1 and 2 on system 2.

Revision 01 May 30, 1997 Section 363-718-104
PG-Flex FCS-718 PairGain Engineering - Plant Series Page 7
Table 6. Channel Unit Connectors for System 1
System Channel Unit Connector
11 J3 System Channel Unit Connector 12 J4
Pin Signal Pin Signal Pin Signal Pin Signal
1 PROTGND 2 PROTGND 1 PROTGND 2 PROTGND
3 TIPEX01_1 4 RINGEX01_1 3 TIPEX05_1 4 RINGEX05_1
5 TIPEX02_1 6 RINGEX02_1 5 TIPEX06_1 6 RINGEX06_1
7 TIPEX03_1 8 RINGEX03_1 7 TIPEX07_1 8 RINGEX07_1
9 TIPEX04_1 10 RINGEX04_1 9 TIPEX08_1 10 RINGEX08_1
11 BATTERY+ 12 BATTERY+ 11 BATTERY+ 12 BATTERY+
13 -48_1 14 -48_1 13 -48_1 14 -48_1
15 BATTERY- 16 BATTTERY- 15 BATTERY- 16 BATTERY-
17 8KHZ_CC 18 N/C (BURN-IN) 17 8KHZ_CC 18 N/C (BURN-IN)
19 TSYNC_1 20 TSIG_1 19 TSYNC_1 20 TSIG_1
21 TCLK_1 22 TSER_1 21 TCLK_1 22 TSER_1
23 GND 24 RSYNC_1 23 GND 24 RSYNC_1
25 RSIG_1 26 RCLK_1 25 RSIG_1 26 RCLK_1
27 RSER_1 28 GND 27 RSER_1 28 GND
29 SDA_1 30 CSYNC_1 29 SDA_1 30 CSYNC_1
31 N/C 32 SCL_1 31 N/C 32 SCL_1
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_1 46 TESTIN-R_1 45 TESTIN-T_1 46 TESTIN-R_1
47 GND 48 GND 47 GND 48 GND
49 TESTOUT-T_1 50 TESTOUT-R_1 49 TESTOUT-T_1 50 TESTOUT-R_1
51 TIP01_1 52 RING01_1 51 TIP05_1 52 RING05_1
53 TIP02_1 54 RING02_1 53 TIP06_1 54 RING06_1
55 TIP03_1 56 RING03_1 55 TIP07_1 56 RING07_1
57 TIP04_1 58 RING04_1 57 TIP08_1 58 RING08_1
59 PROTGND 60 PROTGND 59 PROTGND 60 PROTGND
(continued on next page)

Section 363-718-104 Mya 30, 1997 Revision 01
Page 8 PairGain Engineering - Plant Series PG-Flex FCS-718
Table 6. Channel Unit Connectors for System 1 (continued)
System Channel Unit Connector
13 J5 System Channel Unit Connector 14 J6
Pin Signal Pin Signal Pin Signal Pin Signal
1 PROTGND 2 PROTGND 1 PROTGND 2 PROTGND
3 TIPEX09_1 4 RINGEX09_1 3 TIPEX13_1 4 RINGEX13_1
5 TIPEX10_1 6 RINGEX10_1 5 TIPEX14_1 6 RINGEX14_1
7 TIPEX11_1 8 RINGEX11_1 7 TIPEX15_1 8 RINGEX15_1
9 TIPEX12_1 10 RINGEX12_1 9 TIPEX16_1 10 RINGEX16_1
11 BATTERY+ 12 BATTERY+ 11 BATTERY+ 12 BATTERY+
13 -48_1 14 -48_1 13 -48_1 14 -48_1
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_1 20 TSIG_1 19 TSYNC_1 20 TSIG_1
21 TCLK_1 22 TSER_1 21 TCLK_1 22 TSER_1
23 GND 24 RSYNC_1 23 GND 24 RSYNC_1
25 RSIG_1 26 RCLK_1 25 RSIG_1 26 RCLK_1
27 RSER_1 28 GND 27 RSER_1 28 GND
29 SDA_1 30 CSYNC_1 29 SDA_1 30 CSYNC_1
31 N/C 32 SCL_1 31 N/C 32 SCL_1
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_1 46 TESTIN-R_1 45 TESTIN-T_1 46 TESTIN-R_1
47 GND 48 GND 47 GND 48 GND
49 TESTOUT-T_1 50 TESTOUT-R_1 49 TESTOUT-T_1 50 TESTOUT-R_1
51 TIP09_1 52 RING09_1 51 TIP13_1 52 RING13_1
53 TIP10_1 54 RING10_1 53 TIP14_1 54 RING14_1
55 TIP11_1 56 RING11_1 55 TIP15_1 56 RING15_1
57 TIP12_1 58 RING12_1 57 TIP16_1 58 RING16_1
59 PROTGND 60 PROTGND 59 PROTGND 60 PROTGND
(continued on next page)

Revision 01 May 30, 1997 Section 363-718-104
PG-Flex FCS-718 PairGain Engineering - Plant Series Page 9
Table 6. Channel Unit Connectors for System 1 (continued)
System Channel Unit Connector
15 J7 System Channel Unit Connector 16 J8
Pin Signal Pin Signal Pin Signal Pin Signal
1 PROTGND 2 PROTGND 1 PROTGND 2 PROTGND
3 TIPEX17_1 4 RINGEX17_1 3 TIPEX21_1 4 RINGEX21_1
5 TIPEX18_1 6 RINGEX18_1 5 TIPEX22_1 6 RINGEX22_1
7 TIPEX19_1 8 RINGEX19_1 7 TIPEX23_1 8 RINGEX23_1
9 TIPEX20_1 10 RINGEX20_1 9 TIPEX24_1 10 RINGEX24_1
11 BATTERY+ 12 BATTERY+ 11 BATTERY+ 12 BATTERY+
13 -48_1 14 -48_1 13 -48_1 14 -48_1
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_1 20 TSIG_1 19 TSYNC_1 20 TSIG_1
21 TCLK_1 22 TSER_1 21 TCLK_1 22 TSER_1
23 GND 24 RSYNC_1 23 GND 24 RSYNC_1
25 RSIG_1 26 RCLK_1 25 RSIG_1 26 RCLK_1
27 RSER_1 28 GND 27 RSER_1 28 GND
29 SDA_1 30 CSYNC_1 29 SDA_1 30 CSYNC_1
31 N/C 32 SCL_1 31 N/C 32 SCL_1
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_1 46 TESTIN-R_1 45 TESTIN-T_1 46 TESTIN-R_1
47 GND 48 GND 47 GND 48 GND
49 TESTOUT-T_1 50 TESTOUT-R_1 49 TESTOUT-T_1 50 TESTOUT-R_1
51 TIP17_1 52 RING17_1 51 TIP21_1 52 RING21_1
53 TIP18_1 54 RING18_1 53 TIP22_1 54 RING22_1
55 TIP19_1 56 RING19_1 55 TIP23_1 56 RING23_1
57 TIP20_1 58 RING20_1 57 TIP24_1 58 RING24_1
59 PROTGND 60 PROTGND 59 PROTGND 60 PROTGND

Section 363-718-104 Mya 30, 1997 Revision 01
Page 10 PairGain Engineering - Plant Series PG-Flex FCS-718
Table 7. Channel Unit Connectors for System 2
System Channel Unit Connector
2 7 J11 System Channel Unit Connector 2 8 J12
Pin Signal Pin Signal Pin Signal Pin Signal
1 PROTGND 2 PROTGND 1 PROTGND 2 PROTGND
3 TIPEX25_2 4 RINGEX25_2 3 TIPEX29_2 4 RINGEX29_2
5 TIPEX26_2 6 RINGEX26_2 5 TIPEX30_2 6 RINGEX30_2
7 TIPEX27_2 8 RINGEX27_2 7 TIPEX31_2 8 RINGEX31_2
9 TIPEX28_2 10 RINGEX28_2 9 TIPEX32_2 10 RINGEX32_2
11 BATTERY+ 12 BATTERY+ 11 BATTERY+ 12 BATTERY+
13 -48_2 14 -48_2 13 -48_2 14 -48_2
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_2 20 TSIG_2 19 TSYNC_2 20 TSIG_2
21 TCLK_2 22 TSER_2 21 TCLK_2 22 TSER_2
23 GND 24 RSYNC_2 23 GND 24 RSYNC_2
25 RSIG_2 26 RCLK_2 25 RSIG_2 26 RCLK_2
27 RSER_2 28 GND 27 RSER_2 28 GND
29 SDA_2 30 CSYNC_2 29 SDA_2 30 CSYNC_2
31 N/C 32 SCL_2 31 N/C 32 SCL_2
33 +5_2 34 +5_2 33 +5_2 34 +5_2
35 GND 36 GND 35 GND 36 GND
37 -5_2 38 -5_2 37 -5_2 38 -5_2
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_2 46 TESTIN-R_2 45 TESTIN-T_2 46 TESTIN-R_2
47 GND 48 GND 47 GND 48 GND
49 TESTOUT-T_2 50 TESTOUT-R_2 49 TESTOUT-T_2 50 TESTOUT-R_2
51 TIP25_2 52 RING25_2 51 TIP29_2 52 RING29_2
53 TIP26_2 54 RING26_2 53 TIP30_2 54 RING30_2
55 TIP27_2 56 RING27_2 55 TIP31_2 56 RING31_2
57 TIP28_2 58 RING28_2 57 TIP32_2 58 RING32_2
59 PROTGND 60 PROTGND 59 PROTGND 60 PROTGND
(continued on next page)

Revision 01 May 30, 1997 Section 363-718-104
PG-Flex FCS-718 PairGain Engineering - Plant Series Page 11
Table 7. Channel Unit Connectors for System 2 (continued)
System Channel Unit Connector
2 9 J13 System Channel Unit Connector 2 10 J14
Pin Signal Pin Signal Pin Signal Pin Signal
1 PROTGND 2 PROTGND 1 PROTGND 2 PROTGND
3 TIPEX33_2 4 RINGEX33_2 3 TIPEX37_2 4 RINGEX37_2
5 TIPEX34_2 6 RINGEX34_2 5 TIPEX38_2 6 RINGEX38_2
7 TIPEX35_2 8 RINGEX35_2 7 TIPEX39_2 8 RINGEX39_2
9 TIPEX36_2 10 RINGEX36_2 9 TIPEX40_2 10 RINGEX40_2
11 BATTERY+ 12 BATTERY+ 11 BATTERY+ 12 BATTERY+
13 -48_2 14 -48_2 13 -48_2 14 -48_2
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_2 20 TSIG_2 19 TSYNC_2 20 TSIG_2
21 TCLK_2 22 TSER_2 21 TCLK_2 22 TSER_2
23 GND 24 RSYNC_2 23 GND 24 RSYNC_2
25 RSIG_2 26 RCLK_2 25 RSIG_2 26 RCLK_2
27 RSER_2 28 GND 27 RSER_2 28 GND
29 SDA_2 30 CSYNC_2 29 SDA_2 30 CSYNC_2
31 N/C 32 SCL_2 31 N/C 32 SCL_2
33 +5_2 34 +5_2 33 +5_2 34 +5_2
35 GND 36 GND 35 GND 36 GND
37 -5_2 38 -5_2 37 -5_2 38 -5_2
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_2 46 TESTIN-R_2 45 TESTIN-T_2 46 TESTIN-R_2
47 GND 48 GND 47 GND 48 GND
49 TESTOUT-T_2 50 TESTOUT-R_2 49 TESTOUT-T_2 50 TESTOUT-R_2
51 TIP33_2 52 RING33_2 51 TIP37_2 52 RING37_2
53 TIP34_2 54 RING34_2 53 TIP38_2 54 RING38_2
55 TIP35_2 56 RING35_2 55 TIP39_2 56 RING39_2
57 TIP36_2 58 RING36_2 57 TIP40_2 58 RING40_2
59 PROTGND 60 PROTGND 59 PROTGND 60 PROTGND
(continued on next page)

Section 363-718-104 Mya 30, 1997 Revision 01
Page 12 PairGain Engineering - Plant Series PG-Flex FCS-718
Table 7. Channel Unit Connectors for System 2 (continued)
System Channel Unit Connector
2 11 J15 System Channel Unit Connector 2 12 J16
Pin Signal Pin Signal Pin Signal Pin Signal
1 PROTGND 2 PROTGND 1 PROTGND 2 PROTGND
3 TIPEX41_2 4 RINGEX41_2 3 TIPEX45_2 4 RINGEX45_2
5 TIPEX42_2 6 RINGEX42_2 5 TIPEX46_2 6 RINGEX46_2
7 TIPEX43_2 8 RINGEX43_2 7 TIPEX47_2 8 RINGEX47_2
9 TIPEX44_2 10 RINGEX44_2 9 TIPEX48_2 10 RINGEX48_2
11 BATTERY+ 12 BATTERY+ 11 BATTERY+ 12 BATTERY+
13 -48_2 14 -48_2 13 -48_2 14 -48_2
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_2 20 TSIG_2 19 TSYNC_2 20 TSIG_2
21 TCLK_2 22 TSER_2 21 TCLK_2 22 TSER_2
23 GND 24 RSYNC_2 23 GND 24 RSYNC_2
25 RSIG_2 26 RCLK_2 25 RSIG_2 26 RCLK_2
27 RSER_2 28 GND 27 RSER_2 28 GND
29 SDA_2 30 CSYNC_2 29 SDA_2 30 CSYNC_2
31 N/C 32 SCL_2 31 N/C 32 SCL_2
33 +5_2 34 +5_2 33 +5_2 34 +5_2
35 GND 36 GND 35 GND 36 GND
37 -5_2 38 -5_2 37 -5_2 38 -5_2
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_2 46 TESTIN-R_2 45 TESTIN-T_2 46 TESTIN-R_2
47 GND 48 GND 47 GND 48 GND
49 TESTOUT-T_2 50 TESTOUT-R_2 49 TESTOUT-T_2 50 TESTOUT-R_2
51 TIP41_2 52 RING41_2 51 TIP45_2 52 RING45_2
53 TIP42_2 54 RING42_2 53 TIP46_2 54 RING46_2
55 TIP43_2 56 RING43_2 55 TIP47_2 56 RING47_2
57 TIP44_2 58 RING44_2 57 TIP48_2 58 RING48_2
59 PROTGND 60 PROTGND 59 PROTGND 60 PROTGND
(continued on next page)

Revision 01 May 30, 1997 Section 363-718-104
PG-Flex FCS-718 PairGain Engineering - Plant Series Page 13
4.3 Table 8 lists the FCS-718 backplane connectors (Figure 2) and where each is described in
this practice.
Table 8. FCS-718 List 4 Backplane Connectors
Connector/Fuse Go to Table(s) On page
Battery, CO Battery Return, and Frame Ground 9 14
LAN 10 14
Data 11 14
HDSL, Auxiliary Power Pairs, Bypass Pair, Channel Unit
Test, Composite Clock, Frame Ground, External Alarm Cutoff 12 15
Alarm 13 15
System 1 Subscriber Terminations 14 16
System 2 Subscriber Terminations 15 17
PGTC 16 18
Figure 2. COT Shelf Backplane

Section 363-718-104 Mya 30, 1997 Revision 01
Page 14 PairGain Engineering - Plant Series PG-Flex FCS-718
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. Battery, CO Battery Return, and Frame Ground
Connector Type Function
TB1 -48V Screw Battery (-48 Vdc)
TB2 GND Screw CO battery return
G1 Screw Frame ground
Table 10. LAN Connector
Connector Type Function
J21 BNC (Not currently used)
Table 11. Data Connector
Connector Type Function
J18 DB-25(F) (Not currently used)

Revision 01 May 30, 1997 Section 363-718-104
PG-Flex FCS-718 PairGain Engineering - Plant Series Page 15
Table 12. HDSL, Test, And Miscellaneous Terminations
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 nPower Pair #1 Used for auxiliar
y
RT
p
ower when a
doubler is used.
System nPWR_n_T2
PWR_n_R2 .045 in. Wire-Wrap S
y
stem nPower Pair #2. Used for auxiliar
y
RT
p
ower when a
doubler is used.
System nBYPASS_n_T
BYPASS_n_R .045 in. Wire-Wrap Termination for the metallic bypass pair into COT System n from RT n.
System nTEST_n_T IN
TEST_n_R IN .045 in. Wire-Wrap Test connection lookin
g
into the CO 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_OUT
TEST_n_OUT .045 in. Wire-Wrap Test connection lookin
g
into the COT channel 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
p
ort. In some a
pp
lications, this
p
air will
be jumpered to the BYPASS pair from RT n.
CC1_TIP
CC1_RING .045 in. Wire-Wrap Com
p
osite Clock #1. Used for
p
rimar
y
s
y
nchronization to CO timin
g
.
When cascaded, terminate only on the last shelf in the cascade.
CC2_TIP
CC2_RING .045 in. Wire-Wrap Com
p
osite Clock #2. Used for secondar
y
s
y
nchronization to CO timin
g
.
When cascaded, terminate only on the last shelf in the cascade.
FRAME_GND .045 in.
Wire-Wrap Frame ground (G1). This is isolated from CO battery return 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 PG-Flex audible alarm relays.
BAT RTN
CKT GND .045 in. Wire-Wrap CO battery return. This is isolated from frame ground in PG-Flex.
*Where nis 1 on System 1 and 2 on System 2.
Table 13. 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 relay contacts, NO is normally opened, NC is normally closed, and COM is common.
 All relays provide form “C” contacts.

Section 363-718-104 Mya 30, 1997 Revision 01
Page 16 PairGain Engineering - Plant Series PG-Flex FCS-718
You must use the cable adapter (PN 120-1111-01) to ensure the subscriber
terminations follow the information shown in Table 14.
Table 14. System 1 Subscriber Terminations
CU Circuit Conn
P1 Tip Conn P1 Ring Tip Ring Conn P3 Tip Conn P3 Ring Circuit CU
1 26 1 WH/BL BL/WH 26 1 1
2 27 2 WH/OR OR/WH 27 2 2
3 28 3 WH/GN GN/WH 28 3 3
4 29 4 WH/BN BN/WH 29 4 4
1530 5 WH/SL SL/WH 30 554
631 6 RD/BL BL/RD 31 66
732 7 RD/OR OR/RD 32 77
833 8 RD/GN GN/RD 33 88
1 34 9 RD/BN BN/RD 34 9 1
2 35 10 RD/SL SL/RD 35 10 2
3 36 11 BK/BL BL/BK 36 11 3
4 37 12 BK/OR OR/BK 37 12 4
2538 13 BK/GN GN/BK 38 13 5 5
6 39 14 BK/BN BN/BK 39 14 6
7 40 15 BK/SL SL/BK 40 15 7
8 41 16 YL/BL BL/YL 41 16 8
1 42 17 YL/OR OR/YL 42 17 1
2 43 18 YL/GN GN/YL 43 18 2
3 44 19 YL/BN BN/YL 44 19 3
4 45 20 YL/SL SL/YL 45 20 4
3546 21 VI/BL BL/VI 46 21 5 6
6 47 22 VI/OR OR/VI 47 22 6
7 48 23 VI/GN GN/VI 48 23 7
8 49 24 VI/BN BN/VI 49 24 8
Shaded terminations are used only with 8 channel POTS and DDS CUs.

Revision 01 May 30, 1997 Section 363-718-104
PG-Flex FCS-718 PairGain Engineering - Plant Series Page 17
You must use the cable adapter (PN 120-1111-01) to ensure the subscriber
terminations follow the information shown in Table 15.
Table 15. System 2 Subscriber Terminations
CU* Circuit Conn
P2 Tip Conn P2 Ring Tip Ring Conn P4 Tip Conn P4 Ring Circuit CU*
1 26 1 WH/BL BL/WH 26 1 1
2 27 2 WH/OR OR/WH 27 2 2
3 28 3 WH/GN GN/WH 28 3 3
74 29 4 WH/BN BN/WH 29 4 4 10
(1) 530 5 WH/SL SL/WH 30 55(4)
631 6 RD/BL BL/RD 31 66
732 7 RD/OR OR/RD 32 77
833 8 RD/GN GN/RD 33 88
1 34 9 RD/BN BN/RD 34 9 1
2 35 10 RD/SL SL/RD 35 10 2
3 36 11 BK/BL BL/BK 36 11 3
84 37 12 BK/OR OR/BK 37 12 4 11
(2) 538 13 BK/GN GN/BK 38 13 5 (5)
639 14 BK/BN BN/BK 39 14 6
7 40 15 BK/SL SL/BK 40 15 7
8 41 16 YL/BL BL/YL 41 16 8
1 42 17 YL/OR OR/YL 42 17 1
2 43 18 YL/GN GN/YL 43 18 2
3 44 19 YL/BN BN/YL 44 19 3
94 45 20 YL/SL SL/YL 45 20 4 12
(3) 546 21 VI/BL BL/VI 46 21 5 (6)
647 22 VI/OR OR/VI 47 22 6
7 48 23 VI/GN GN/VI 48 23 7
8 49 24 VI/BN BN/VI 49 24 8
* The CU numbers in
p
arentheses are for a List 3 or hi
g
her LU. The numbers not in
p
arentheses are for a List 1
or 2 LU.
Shaded terminations are used only with 8 channel POTS and DDS CUs.

Section 363-718-104 Mya 30, 1997 Revision 01
Page 18 PairGain Engineering - Plant Series PG-Flex FCS-718
Table 16. PGTC Telco Connector P12
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
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.