PairGain FCS-719 User manual

PG-FLEX CO TERMINAL SHELF
MODEL FCS-719
List Number Part Number CLEI Code
1 150-1319-01 VAMCBE0ARA
PAIRGAIN TECHNOLOGIES, INC.
ENGINEERING SERVICES TECHNICAL PRACTICE
SECTION 363-719-100
Revision History of this practice.
Revision 03—December 18, 1996
a) Added List 2

Section 363-719-100 December 18, 1996 Revision 03
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 ........................................................................................2
C. INSTALLATION AND TEST........................................................................................................16
5. UNPACKING....................................................................................................................16
6. PRE-PROVISIONING—HDSL LINES.............................................................................16
7. MOUNTING .....................................................................................................................18
8. WIRING............................................................................................................................18
9. TURN-UP AND TESTING ...............................................................................................23
10. TROUBLESHOOTING..................................................................................................23
11. TECHNICAL SUPPORT................................................................................................23
D. WARRANTY..................................................................................................................................23
12. WARRANTY.................................................................................................................23
USING THIS TECHNICAL PRACTICE
Three types of messages, identified by icons, appear in the text:
A note informs you of special circumstances.
A caution warns you of possible damage to equipment.
A warning indicates the possibility of personal injury.
Copyright 1996 PairGain Technologies, Inc.
PairGain is a registered trademark, and PG-Flex is a trademark of PairGain Technologies, Inc.

Revision 03 December 18, 1996 Section 363-719-100
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 1D Central Office Terminal (COT) 23" Shelf supports four
PG-Flex subscriber carrier systems (Figure 1). The FCS-719 provides convenient mounting of COT
Alarm, Line, and Channel Units, as well as termination points for subscriber circuits, alarm, power,
and metallic test access. The FCS-719, List 1 COT Shelf provides 25-pair male Amphenol
connectors for subscriber connections. All circuit boards are installed from the front of the shelf.
Interconnections for the PG-Flex units are located on the backplane at the rear of the shelf.
Figure 1. Front View of FCS-719 COT Shelf
1.2 The FCS-719 COT shelf accommodates the following PG-Flex units:

One alarm unit or Pair Gain Test Controller (PGTC) interface unit

Four line units

Twelve channel units
1.3 PG-Flex FCS-719 COT Shelf features:

Universal mounting brackets for installation into a 23-inch equipment rack

Wire-wrap connections for HDSL, alarm, metallic bypass pairs, and alarm relays

Screw terminal connections for frame ground and Central Office (CO) battery

DB-25 connector for Network Management Access communications

25-pair Amphenol connectors for connection to CO lines

25-pair Amphenol connector for PGTC Test Interface

Section 363-719-100 December 18, 1996 Revision 03
Page 2 PairGain Engineering - Plant Series PG-Flex FCS-719
2. SPECIFICATIONS
Physical Dimensions
Height:........................................................7.00" (17.8 cm)
Width: ........................................................23.00" (58.4 cm)
Depth:......................................................... 11.75" (29.9 cm)
Weight:....................................................... 15.0 lb. (6.8 kg)
Mounting
23" equipment rack using universal mounting brackets
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)
B. FUNCTIONAL DESCRIPTION
3. OPERATIONAL CAPABILITIES
3.1 Each shelf can support four subscriber carrier systems; each system requires one line unit and one
channel unit. Each shelf can contain up to four line units (one per system), 12 channel units (three
per system) and one alarm unit or PGTC Interface unit (common to all systems).
4. BACKPLANE CONNECTIONS
4.1 The backplane of the FCS-719 COT Shelf List 1 contain the following connectors (Figure 2):

CO Power, (Table 7)

Local Area Network (Table 8)

Data (Table 9)

HDSL, Test, and Miscellaneous (Table 10)

Composite Clock Termination Resistors (Table 10)

Inhibit Pin (Table 10)

Alarm (Table 11)

Subscriber Lines (Tables 12 through 14)

PGTC Test Interface (Table 15)

Revision 03 December 18, 1996 Section 363-719-100
PG-Flex FCS-719 PairGain Engineering - Plant Series Page 3
Figure 2. FCS-719, List 1 COT Shelf Backplane
4.2 Refer to the installation section of the appropriate instruction manual to get information on:

Cabling

Proper connections

Grounding
4.3 Wiring external to the product(s) should follow the provisions of the current edition of the National
Electrical Code.
4.4 Tables 1 through 15 identify each connector by type and list the function of each connector terminal.
Information in tables 2 through 6 may be used for diagnostic and
troubleshooting procedures under the direction of an authorized PairGain
technical support representative.

Section 363-719-100 December 18, 1996 Revision 03
Page 4 PairGain Engineering - Plant Series PG-Flex FCS-719
Table 1. COT Shelf Connectors
Connector ID Descri
p
tion Table
G1 Frame Ground (Protection Ground) 7
J1 Alarm Unit/PGTC Interface Unit 2
J2 Line Unit #1 3
J3 Channel Unit #1 4
J4 Channel Unit #2 5
J5 Channel Unit #3 6
J7 Line Unit #2 3
J8 Channel Unit #4 4
J9 Channel Unit #5 5
J10 Channel Unit #6 6
J12 Line Unit #3 3
J13 Channel Unit #7 4
J14 Channel Unit #8 5
J15 Channel Unit #9 6
J17 Line Unit #4 3
J18 Channel Unit #10 4
J19 Channel Unit #11 5
J20 Channel Unit #12 6
J21 RS-232 DTE 9
J22 LAN connector 8
P1 S
y
stem 1 Subscriber connector 14
P2 S
y
stem 2 Subscriber connector 14
P3 S
y
stem 3 Subscriber connector 14
P4 S
y
stem 4 Subscriber connector 14
P5, P9, P13, P17 S
y
stem 1 wirewra
p
fields 10
P6, P10, P14, P18 S
y
stem 2 wirewra
p
fields 10
P7, P11, P15, P19 S
y
stem 3 wirewra
p
fields 10
P8, P12, P16, P20 S
y
stem 4 wirewra
p
fields 10
P21 Com
p
osite Clock Timin
g
In
p
ut 10
P22 Alarms 11
P23 Ext. ACO, PGTC Inhibit 10
P24, P25 Circuit, Frame, Batter
y
Grounds 10
P27 PGTC Connector 15
P99 S
p
are
p
ins; not connected ---
TB1, TB2 CO Power 9

Revision 03 December 18, 1996 Section 363-719-100
PG-Flex FCS-719 PairGain Engineering - Plant Series Page 5
Table 2. Alarm Unit/PGTC Interface Unit (J1-A, J1-B, J1-C) Connector Pinouts
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 NAM_TX 18 NMA_RX 18 NMA_DTR
19 NAM_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 SYS_ID_NO 24 SYS_ID_COM 24 SYS_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 363-719-100 December 18, 1996 Revision 03
Page 6 PairGain Engineering - Plant Series PG-Flex FCS-719
Table 3. Line Unit Connector Pinouts
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_n* 6 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 on System 1, 2 on System 2, 3 on System 3, and 4 on System 4.

Revision 03 December 18, 1996 Section 363-719-100
PG-Flex FCS-719 PairGain Engineering - Plant Series Page 7
Table 4. Channel Unit Connector Pinouts for J3, J8, J13, J18
System Channel Unit Connector
11 J3
24 J8
3 7 J13
4 10 J18
Pin Signal Pin Signal
1 PROTGND 2 PROTGND
3 TIPEX01_n* 4 RINGEX01_n
5 TIPEX02_n 6 RINGEX02_n
7 TIPEX03_n 8 RINGEX03_n
9 TIPEX04_n 10 RINGEX04_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 TIP01_n 52 RING01_n
53 TIP02_n 54 RING02_n
55 TIP03_n 56 RING03_n
57 TIP04_n 58 RING04_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.

Section 363-719-100 December 18, 1996 Revision 03
Page 8 PairGain Engineering - Plant Series PG-Flex FCS-719
Table 5. Channel Unit Connector Pinouts for J4, J9, J14, J19
System Channel Unit Connector
12 J4
25 J9
3 8 J14
4 11 J19
Pin Signal Pin Signal
1 PROTGND 2 PROTGND
3 TIPEX05_n 4 RINGEX05_n
5 TIPEX06_n 6 RINGEX06_n
7 TIPEX07_n 8 RINGEX07_n
9 TIPEX08_n 10 RINGEX08_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 TIP05_n 52 RING05_n
53 TIP06_n 54 RING06_n
55 TIP07_n 56 RING07_n
57 TIP08_n 58 RING08_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 03 December 18, 1996 Section 363-719-100
PG-Flex FCS-719 PairGain Engineering - Plant Series Page 9
Table 6. Channel Unit Connector Pinouts for J5, J10, J15, J20
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.

Section 363-719-100 December 18, 1996 Revision 03
Page 10 PairGain Engineering - Plant Series PG-Flex FCS-719
Table 7. COT Shelf Connectors (CO Power) List 1
Connector Type Function
TB1 Screw CO battery (-48 V dc)
TB2 Screw CO BATT RTN
G1 Screw Frame Ground
(Protection Ground)
CO ground is separate from FRAME GROUND in PG-Flex. These can be
connected on the COT shelf Backplane by connecting the "FRAME GND" wire-
wrap post to the adjacent "CKT GND" wire-wrap post. Follow local grounding
practices.
Table 8. COT Shelf Connectors (LAN)
Connector Type Function
J22 BNC (Not currently used)
Table 9. COT Shelf Connector (DATA)
Connector Type Function
J21 RS-232 DTE (Not currently used)

Revision 03 December 18, 1996 Section 363-719-100
PG-Flex FCS-719 PairGain Engineering - Plant Series Page 11
Table 10. COT Shelf Connectors (HDSL, Test, And Miscellaneous)
System Connector Type Function
S
y
stem n* HDSL_T1
HDSL_R1 0.45 mm Wire Wra
p
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.
S
y
stem nHDSL_T2
HDSL_R2 0.45 mm Wire Wra
p
Ti
p
and rin
g
terminations for HDSL Pair #2 of S
y
stem nto Remote
Terminal n. -130 V dc is sim
p
lexed on this line for
p
owerin
g
the
Remote Terminal.
S
y
stem nPWR_OUT_T1
PWR_OUT_R1 0.45 mm Wire Wra
p
S
y
stem nPower Pair #1
(Not currentl
y
used)
S
y
stem nPWR_OUT_T2
PWR_OUT_R2 0.45 mm Wire Wra
p
S
y
stem nPower Pair #2
(Not currentl
y
used)
S
y
stem nBYPASS_T
BYPASS_R 0.45 mm Wire Wra
p
Termination for the metallic b
yp
ass
p
air into COT S
y
stem nfrom
RT n.
S
y
stem n TEST_IN_T
TEST_IN_R 0.45 mm Wire Wra
p
Test connection lookin
g
into the COT channel unit 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.
S
y
stem nTEST_OUT_T
TEST_OUT_R 0.45 mm Wire Wra
p
Test connection lookin
g
into the central office e
q
ui
p
ment 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
j
um
p
ered to the BYPASS
p
air from RT n.
CC1_IN_T
CC1_IN_R 0.45 mm Wire Wra
p
Com
p
osite Clock #1. Used for 64 kb
p
s DDS Com
p
osite Clock for
s
y
nchronization to central office switch. These
p
ins ma
y
be dais
y
chained to additional Com
p
osite Clock in
p
uts in other PG-Flex
s
y
stems.
CC2_IN_T
CC2_IN_R 0.45 mm Wire Wra
p
Com
p
osite Clock #2. Used for 64 kb
p
s DDS Com
p
osite Clock for
s
y
nchronization to central office switch. These
p
ins ma
y
be dais
y
chained to additional Com
p
osite Clock in
p
uts in other PG-Flex
s
y
stems.
FRAME_GND 0.45 mm
Wire Wra
p
Frame
g
round. This is isolated from central office batter
y
g
round in
PG-Flex.
EXT_ACO
CKT_GND 0.45 mm Wire Wra
p
External Alarm Cutoff. A momentar
y
connection between EXT_ACO
and circuit
g
round will silence the PG-Flex audible alarms.
INHIBIT 0.45 mm
Wire Wra
p
PGTC Inhibit connection. This
p
in should not be connected to an
y
other Inhibit
p
ins in PG-Flex or other DLC s
y
stems.
GND 0.45 mm
Wire Wra
p
Central office batter
y
g
round. This is isolated from frame
g
round in
PG-Flex.
*Where n is 1 on System 1, 2 on System 2, 3 on System 3, and 4 on System 4.

Section 363-719-100 December 18, 1996 Revision 03
Page 12 PairGain Engineering - Plant Series PG-Flex FCS-719
Table 11. COT Shelf Connectors (ALARM)
Posts Contact Post
NO Contact Post COM Contact Post NC FUNCTION
SHELF_ID 1 2 3 Shelf ID. A sin
g
le form "C" rela
y
is utilized to
indicate a ma
j
or or minor shelf alarm is active.
MAJ_AUD 4 5 6 A sin
g
le form "C" rela
y
is utilized to indicate a ma
j
or
alarm. The alarm ma
y
be silenced with the ACO
button. This rela
y
ma
y
be connected to the central
office alarm s
y
stem's ma
j
or alarm audible indicator.
MAJ_VIS 7 8 9 A sin
g
le form "C" rela
y
is utilized to indicate a ma
j
or
alarm. The alarm cannot be disabled. This rela
y
ma
y
be connected to the central office alarm s
y
stem's
ma
j
or alarm visual indicator.
MIN_AUD 10 11 12 A sin
g
le form "C" rela
y
is utilized to indicate a minor
alarm. The alarm ma
y
be silenced with the ACO
button. This rela
y
ma
y
be connected to the central
office alarm s
y
stem's minor alarm audible indicator.
MIN_VIS 13 14 15 A sin
g
le form "C" rela
y
is utilized to indicate a minor
alarm. The alarm ma
y
be silenced with the ACO
button. This rela
y
ma
y
be connected to the central
office alarm s
y
stem's minor alarm visual indicator.
Table 12. COT Shelf Circuit Assignments*
cu 1 cu 2 cu 3 cu 4 cu 5 cu 6 cu 7 cu 8 cu 9 cu 10 cu 11 cu 12
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
* Refer to Table 11 for alarm unit terminations, and to Table 14 for line unit terminations.

Revision 03 December 18, 1996 Section 363-719-100
PG-Flex FCS-719 PairGain Engineering - Plant Series Page 13
Each PG-Flex channel unit provides four (4) or eight (8) circuits, depending on
the service offering (that is, POTS, ISDN, DDS, etc.) of the channel unit – refer to
Table 13 below.
For channel units providing four (4) circuits, circuits Ckt 1 through Ckt 4 are
used for tip and ring terminations. For channel units providing eight (8)
circuits, circuits Ckt 1 through Ckt 8 are used for tip and ring terminations.
For a 24-channel system, a maximum of 24 circuits may be provisioned.
Table 13. Channel Unit Circuit Utilization
Channel Unit Channel Unit
Service
Configurations
4-Channel POTS
Channel Unit
Service
Configurations
8-Channel POTS
Channel Unit
Service
Configurations
4-Channel ISDN
Channel Unit
Service
Configurations
4-Channel DDS
Ckt 1 llll
Ckt 2 llll
Ckt 3 llll
Ckt 4 llll
Ckt 5 ll
Ckt 6 ll
Ckt 7 ll
Ckt 8 ll

Section 363-719-100 December 18, 1996 Revision 03
Page 14 PairGain Engineering - Plant Series PG-Flex FCS-719
Table 14. COT Shelf Subscriber Connections
Channel Unit Circuit Connector Pn* Ring Connector Pn* Tip
11126
2227
3328
4429
513 38
6 14 39
7 15 40
8 16 41
21530
2631
3732
4833
517 42
6 18 43
7 19 44
8 20 45
31934
21035
31136
41237
521 46
6 22 47
7 23 48
8 24 49
Bypass #n 25 50
Shaded terminations are used onl
y
with 8 Channel POTS and DDS Units.
* Where n is 1 on System 1, 2 on System 2, 3 on System 3, and 4 on System 4.

Revision 03 December 18, 1996 Section 363-719-100
PG-Flex FCS-719 PairGain Engineering - Plant Series Page 15
Table 15. PGTC Telco Connector P27
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

Section 363-719-100 December 18, 1996 Revision 03
Page 16 PairGain Engineering - Plant Series PG-Flex FCS-719
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 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 kohms.
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. Tables 16 and 17 identify these
distances (at a cable temperature of 68°F).

Revision 03 December 18, 1996 Section 363-719-100
PG-Flex FCS-719 PairGain Engineering - Plant Series Page 17
Table 16. 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
Table 17. 16/32 Channel HDSL Transmission Distance
Gauge Loop Length Resistance
19 AWG
0.9 mm 19.4 kft 5.9 km 312 Ω
22 AWG
0.6 mm 13.7 kft 4.2 km 444 Ω
24 AWG
0.5 mm 10.7 kft 3.3 km 554 Ω
26 AWG
0.4 mm 8.1 kft 2.5 km 672 Ω

Section 363-719-100 December 18, 1996 Revision 03
Page 18 PairGain Engineering - Plant Series PG-Flex FCS-719
7. MOUNTING
7.1 The COT shelf mounts onto a standard 23" central office frame and requires 7" in height of mounting
space (four vertical mounting units). Shipped with the COT shelf are universal mounting brackets
and mounting screws.
8. WIRING
8.1 All wiring to the COT shelf is done on the backplane. To access the backplane, remove the clear
Plexiglas cover.
8.1.1 To connect the frame ground (Figure 3):
1Remove the fuse in the equipment bay's fuse panel for the circuit where the PG-Flex central
office battery wire will be terminated until the COT is wired and ready for turn-up.
2Connect the frame ground:
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.
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 central office ground termination
point.
Figure 3. Connecting the Frame Ground (Protection Ground)