ADTRAN 3192 Instruction Manual

61179512L2-5A Section 61179512L2-5, Issue 1 1
3192 Integrated Central Office Terminal (ICOT)
Installation and Maintenance
Section 61179512L2-5A
Issue 1, December 2001
CLEI Code VACJCXBC_ _
CONTENTS
1. GENERAL ........................................................... 1
2. INSTALLATION ................................................ 2
3. PROVISIONING ................................................. 3
4. TESTING ............................................................. 6
5. DEPLOYMENT GUIDELINES ......................... 6
6. ICOT TROUBLESHOOTING
PROCEDURES ................................................... 7
7. SPECIFICATIONS .............................................. 8
8. MAINTENANCE ................................................ 9
9. WARRANTY AND CUSTOMER SERVICE .... 9
Appendix A. HDSL Loopbacks ............................ A-1
FIGURES
Figure 1. 3192 ICOT ............................................. 1
Figure 2. Integrated DLC Configuration ............... 2
Figure 3. Universal DLC Configuration ............... 3
Figure 4. Card Edge Connections ......................... 3
Figure 5. RS-232 (DB-9) Pin Assignments........... 4
Figure 6. 3192 ICOT Menu Tree .......................... 5
Figure 7. Bantam Jack Arrangement ..................... 6
Figure 8. Loopback Configurations ...................... 6
Figure 9. CSA Deployment Guidelines................. 7
TABLES
Table 1. Compliance Codes ................................. 3
Table 2. Faceplate LED Indicators ...................... 4
Table 3. HDSL Loss Values ................................ 7
Table 4. Loop Insertion Loss Data ....................... 7
Table 5. ICOT Troubleshooting Guide ................ 7
Table 6. 3192 ICOT Specifications ..................... 8
Figure 1. 3192 ICOT
Trademarks: Any brand names and product names included in this document are
trademarks, registered trademarks, or trade names of their respective holders.
LP1
LP2
DSX
ALM
LBK
H
D
S
L
R
S
2
3
2
1179512L2
TA1000 ICOT
1. GENERAL
This practice is an installation and maintenance guide
for the 3192 Integrated Central Office Terminal
(ICOT), P/ 1179512L2, illustrated in Figure 1. This
unit is to be used exclusively with the Total Access
1000 Remote, P/ 1179001L1.
Revision History
This is the first issue of this practice. Future changes
to this document will be summarized in this
paragraph.
Features
The 3192 ICOT incorporates the following features:
• Allows access to the Total Access 1000 RT
modules through the craft interface port on the
faceplate
• Flash Upgrade of the ICOT and the Total Access
1000 BCU through the craft interface port on the
faceplate
• Provides span power at ±135 VDC to the entire
Total Access 1000 system
• 10-year Warranty
Description
The 3192 ICOT is a high performance line interface
unit used to deploy HDSL using 4-wire metallic
facilities. This unit occupies two slots in the 3192
shelf. The ADTRA 3192 ICOT must be deployed in
conjunction with ADTRA Total Access 1000
Remote System. The 3192 ICOT can be deployed in
circuits consisting of one ICOT and one

2 Section 61179512L2-5, Issue 1 61179512L2-5A
Total Access 1000 RT. When deployment requires the
HDSL Repeater (HRE), this ICOT can also be
deployed with one HRE and a Total Access 1000 RT.
Architecture
The DS1 or DSX-1 input signal to the ICOT is
supplied from the network. The HDSL signals are
provided to the local loop.
The ICOT terminates a DSX-1 network-side interface
from the COT or switch and converts the DSX-1
signal to 4-wire HDSL and adds span powering. The
HDSL signal is delivered over two twisted copper
pairs to the Total Access 1000 RT system where the
HDSL signal is converted into 24 POTS services.
Provisioning, test access, and performance monitoring
for the ICOT are accessed through the DB-9 craft
interface port.
The Total Access 1000 RT system is comprised of an
outside plant (OSP) housing, HDSL Line Interface
Unit (HLIU), Power Supply Unit/Ring Generator
(PSU/RG), Bank Controller Unit (BCU), and POTS or
ISD access modules. Refer to the Total Access 1000
RT Installation and Maintenance Practice, P/
61179001L1-5, for more information regarding these
units.
The HLIU card provides the network interface for the
Total Access 1000 RT system. The HLIU passes span
power to the PSU/RG, and the PSU/RG terminates the
span power from the network and provides regulated
operating voltages to all components within the Total
Access 1000 RT system. Also, the HLIU terminates
the HDSL signal, converts it to a DSX-1 level signal,
and passes it to the BCU. The BCU terminates the
DS0 level signals to the POTS cards. The BCU
provides the remote access point for provisioning,
testing, and monitoring system performance. The
BCU and the HLIU VT100 terminal screens can be
accessed at the network end of the HDSL loops via
the DB-9 craft interface port on the ICOT faceplate.
The Total Access 1000 RT system can be deployed in
an integrated DLC configuration (Figure 2) or a
universal DLC configuration (Figure 3). When used
in the IDLC mode, a switch provides a DSX-1 to the
ICOT, the ICOT converts the DSX-1 to HDSL and
adds span powering. The Total Access 1000 RT
terminates the HDSL and span powering, converts the
HDSL to DSX-1, and provides up to 24 subscriber
interfaces. In the UDLC configuration, the Total
Access 1000 RT interoperates with the Total Access
1500 COT. The Total Access 1500 COT provides the
twenty-four 2-wire interfaces to the switch and, in
turn, provides the DSX-1 interface to the ICOT.
The ICOT contains an onboard fuse. If the fuse
opens, it supplies a -48 VDC voltage to the fuse alarm
bus and all faceplate indicators will be Off. This fuse
is not designed to be replaced in the field.
The 3192 ICOT uses a DC-to-DC converter to derive
its internal logic and span powering voltages from
the -48 VDC office supply. The 3192 ICOT can
span-power up to one HRE and Total Access 1000 RT
as listed above. Span-powering voltages meet all
requirements of Class A2 voltages as specified by
Bellcore GR-1089-CORE.
2. INSTALLATION
After unpacking the unit, inspect it for damage. If
damage is noted, file a claim with the carrier, and then
contact ADTRA . Refer to Warranty and Customer
Service.
Figure 2. Integrated DLC Configuration
NO
NO
SX
SX
SYNC
SYNC
CRC
CRC
QM
QM
DISC
DISC
REM
REM
NO
NO
DSU
DSU
LBK
LBK
RX
RX
(OUT)
(OUT)
TX
TX
(IN)
(IN)
TRDDB
TRDDB
1291004
1291004
DDS
DDS
TotalReach
otal Reach
ON
ON
19.2
19.2
56
56
64
64
SC
SC
9.6
9.6
4.8
4.8
2.4
2.4
QM
QM
LLB
LLB
6
67
78
89
9
5
5
4
4
3
3
2
2
1
1
AP
AP
CUSTOM
TELECOM
E190349
Customer Premises
Central Office
or RT
ICOT
Module
T1
TR-08
SF
or
ESF
HDSL
Total Access 1000 RT
System
Phone
Switch
S
S
S
S
S
S
S
S
S
S
S
S
S
S
S
S
S
S
S
S
S
S
S
S
750
1
BUSY
1
2
3
4
BUSY
1
2
3
4
BUSY
1
2
3
4
BUSY
1
2
3
4
BUSY
1
2
3
4
BUSY
2
3
4
POWER
RG ON
RG DIS
LOOP 1
LOOP 2
POTS
1179408L1
POTS
1179408L1
POTS
1179408L1
POTS
1179408L1
POTS
1179408L1
POTS
1179408L1
PSU
1179007L1
BCU
1175012L1
BCU
1175012L1
TEST
ALARM
A
D
M
I
N
S
S
S
S
S
C A U T I O N
C A U T I O N
!
SUBJECT TO ELECTROSTATIC DAMAGE
OR DECREASE IN RELIABILITY.
HANDLING PRECAUTIONS REQUIRED.

61179512L2-5A Section 61179512L2-5, Issue 1 3
3192 Shelf Connections
The unit occupies two slots in a CI Wescom 3192
Office Repeater Bay. The unit may be plugged into
any of the first 28 slots of the shelf. o installation
wiring is required.
Power and alarm signals are provided to the card
through the backplane of the shelf. DSX-1 and HDSL
Loop signals are connected to the wire-wrap pins or
mass termination shelf connectors corresponding to
the slot the unit occupies. Connections to the DSX
pins are intended for intra-building wiring only. The
card edge pinout is shown in Figure 4.
The HTU-C contains an onboard fuse. If this fuse
opens, it supplies a -48 VDC to the fuse alarm bus; all
faceplate indicators will turn off. The fuse is not field
replaceable.
Powering Options
The ICOT will power the entire Total Access 1000 RT
System. When an HRE is used to extend the range of
the circuit, a second ICOT provides span power to the
HRE through two additional copper pairs. The Total
Access 1000 RT continues to receive span power
through the HDSL loops.
Compliance
This product is intended for use in Restricted Access
Areas Only and is to be installed in a Type “B” or “E”
enclosure. Also, ensure chassis ground is properly
connected. Table 1 list the compliance codes.
LED Indicators
Table 2 describes the functionality of each of the six
faceplate LEDs.
3. PROVISIONING
The ICOT has no external provisioning switches. All
provisioning options are accessible via the VT100
terminal screens.
The DB-9 connector on the faceplate of the 3192
must be used to access the terminal screens. The
menu system enables provisioning, test access, and
alarm status monitoring of both the 3192 ICOT and
the modules in the Total Access 1000 RT. Also
through the menus, the ICOT and the Total Access
1000 BCU can be flash upgraded.
Figure 3. Universal DLC Configuration
NO
SX
SYNC
CRC
QM
DISC
REM
NO
DSU
LBK
RX
(OUT)
TX
(IN)
TRDDB
1291004
DDS
TotalReach
ON
19.2
56
64
SC
9.6
4.8
2.4
QM
LLB
6
67
78
89
9
5
5
4
4
3
3
2
2
1
1
AP
CUSTOM
TELECOM
E190349
Customer Premises
Central Office
Total Access1500 with FXO
Module ICOT Module
T1 HDSL2-Wire
Total Access 1000 RT
System
Phone
Switch
S
S
S
S
S
S
S
S
S
S
S
S
S
S
S
S
S
S
S
S
S
S
S
S
750
1
BUSY
1
2
3
4
BUSY
1
2
3
4
BUSY
1
2
3
4
BUSY
1
2
3
4
BUSY
1
2
3
4
BUSY
2
3
4
POWER
RG ON
RG DIS
LOOP 1
LOOP 2
POTS
1179408L1
POTS
1179408L1
POTS
1179408L1
POTS
1179408L1
POTS
1179408L1
POTS
1179408L1
PSU
1179007L1
BCU
1175012L1
BCU
1175012L1
TEST
ALARM
A
D
M
I
N
S
S
S
S
S
FXO
1181101L1
PWR
DSX
TST
LP1
FXO
1181101L1
PWR
DSX
TST
LP1
FXO
1181101L1
PWR
DSX
TST
LP1
FXO
1181101L1
PWR
DSX
TST
LP1
FXO
1181101L1
PWR
DSX
TST
LP1
FXO
1181101L1
PWR
DSX
TST
LP1
FXO
1181101L1
PWR
DSX
TST
LP1
FXO
1181101L1
PWR
DSX
TST
LP1
FXO
1181101L1
PWR
DSX
TST
LP1
FXO
1181101L1
PWR
DSX
TST
LP1
FXO
1181101L1
PWR
DSX
TST
LP1
FXO
1181101L1
PWR
DSX
TST
LP1
QFC-C
DSX
PWR
DSX
DSX
TST
1
181300L1
DSX
#2
#3
#4
#1
QFC-C
DSX
PWR
DSX
DSX
TST
1
181300L1
DSX
#2
#3
#4
#1
QFC-C
DSX
PWR
DSX
DSX
TST
1
181300L1
DSX
#2
#3
#4
#1
QFC-C
DSX
PWR
DSX
DSX
TST
1
181300L1
DSX
#2
#3
#4
#1
HD-10BRIMux
1
181200L1
HD-10BRIMux
1
181200L1
HD-10BRIMux
POWER
DSX
LBK
1
181200L1
HD-10BRIMux
POWER
DSX
LBK
1
181200L1
HD-10BRIMux
LBK
1
181200L1
T1-OR
PWR
DSX
LBK
LP
ALM
T
X
R
X
+
1181310L1
T1-OR
PWR
DSX
LBK
LP
ALM
T
X
R
X
+
1181310L1
T1-OR
PWR
DSX
LBK
LP
ALM
T
X
R
X
+
1181310L1
T1-OR
PWR
DSX
LBK
LP
ALM
T
X
R
X
+
1181310L1
FXO
1181101L1
PWR
DSX
TST
LP1
FXO
1181101L1
PWR
DSX
TST
LP1
1
2
3
4
5
6
7
8
9
10
A
B
C
D
E
F
H
J
K
L
R1 RX DSX (Out to DSX)
R TX DSX (In from DSX)
GND
R1 HDSL Loop 2
-48V
R HDSL Loop 1
Fuse Alarm (to Alarm Module)
T TX DSX (In from DSX)
RCV LOS (to Alarm Module)
T1 RX DSX (Out to DSX)
T1 HDSL Loop 2
Frame Ground
T HDSL Loop 1
HDSL Loops 1 and 2 are
dual duplex loops (capable
of transmitting and receiving
data simultaneously).
Figure 4. Card Edge Connections
Code Input Output
Power Code (PC) F C
Telecommunication Code (TC) – X
Installation Code (IC) A –
Table 1. Compliance Codes

4 Section 61179512L2-5, Issue 1 61179512L2-5A
To access menu screens, connect a VT100 terminal or
computer running a terminal emulation program to the
craft interface port of the SCU using a standard
male-to-female RS-232, DB-9 cable (Figure 5).
Craft port settings are as follows:
• 9600 Baud
• o parity
• 8 data bits
• 1 stop bit
NOTE
If a personal computer with terminal capability
is being used, be sure to disable any power
saving programs. Otherwise, communication
between the PC and the HDSL unit may be
disrupted, resulting in misplaced characters or
screen time outs.
To initiate a terminal session, enter the appropriate
number of space bar characters to determine the speed
of the terminal, and the Main Menu will appear.
This menu provides access to detailed performance
and configuration information by way of the following
menu screen options:
1. Bank Controller
2. Line Interface Unit
3. Provisioning Templates
4. Access Modules
5. System Alarm
6. Contact Information
7. Set Circuit ID/Date/Time
8. Flash Upgrade ICOT
Table 2. Faceplate LED Indicators
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1PLffO
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.noitazinorhcnysoN
1>(1pooLnoytilauqlangisrooP0
7-
.)REB
(1pooLnoytilauqlangislanigraM<1evobanigramBd20
7-
.)REB
1evobanigramBd2>(1pooLnoytilauqlangisdooG0
7-
.)REB
.1pooLfodnerehtienororredetceteD
2PLffO
deR
wolleY
neerG
gniknilB
.noitazinorhcnysoN
1>(2pooLnoytilauqlangisrooP0
7-
.)REB
(2pooLnoytilauqlangislanigraM<1evobanigramBd20
7-
.)REB
1evobanigramBd2>(2pooLnoytilauqlangisdooG0
7-
.)REB
.2pooLfodnerehtienororredetceteD
XSDffO
gniknilB
diloS
hctamtonseodtahttamrofafosirotnesbasilangis1-XSDedis-krowteN
.tiucricLSDHehtfognoisivorpeht
FSE(rorreCRCro,)edomFS(rorretibemarf,)VPB(noitaloiVralopiB
.langis1-XSDtadetceted)edom
.dezinorhcnysdnatneserpsilangis1-XSDedis-krowteN
MLAffO
deR
wolleY
.detcetednoitidnocmralaoN
yletomerdnayllacolro,)TOCI(yllacolrehtiedetcetednoititnocmralA
.)TRdnaTOCI(
.detcetednoitdidnocmralaetomeR
KBLffO
gniknilB
diloS
.etatsdemrarokcabpoolnitonsitinU
sitinuehtetatssihtnI.detcetedneebsahecneuqesgnimrakcabpoolehT
.kcabpoolnitontub)kcabpoolrofydaer(demra
.evitcasikcabpool)TOCI(lacoL
LP1
LP2
DSX
ALM
LBK
H
D
S
L
R
S
2
3
2
1179512L2
TA1000 ICOT
6
7
8
9
1
2
3
4
5
TXD (Transmit Data)
RXD (Receive Data)
SGN (Signal Ground)
Figure 5. RS-232 (DB-9) Pin Assignments

61179512L2-5A Section 61179512L2-5, Issue 1 5
Figure 6. 3192 ICOT Menu Tree
1. Bank Controller
2. Line Interface Unit 4. Access Modules
FXS/DPO (1-6)
Circuit (1-4)
2. D1D Count
1. D4 Count
2. Disable
1. Enable
2. Disable
1. Enable 2. Ringing 1. No Test 2. Both Directions 1. No Test
2. AMI
1. B8ZS
Y Loading New Code
N Exit
5. System Alarms 6. Contact Information 8. Flash Upgrade ICOT 7. Set Circuit ID/Date/Time 3. Provisioning Templates
1. Configuration
5. Performance
6. Time Slot Usage (1-24)
2. Provisioning
T1 Provisioning T1 Performance
2. T1 Count 3. T1 CSU Loopback
1. T1 Framing
T1 Loopback
7. Test 8. Upload Code
2. Provisioning 3. Status 4. Test
1. Configuration
2. 20 Minutes 3. 60 Minutes 4. 120 Minutes
1. None
2. Provisioning 3. Status 4. Test
1. Configuration
2. TR08 A-digroup, AMI, 3.0 Rx + Tx Attenuation 3. TR08 B, C, D-digroup, AMI, 3.0 Rx + Tx Attenuation 4. ADTRAN TA 4303 Mode
1. Factory Default (ESF, B8ZS, Loopstart)
2. SF 3. SLC-96 w/alarm-16 (A-digroup) 4. SLC-96 w/alarm-13 (A-digroup) 5. SLC-96: D4 (B, C, D, digroup)
1. ESF
3. Status 4. Statistics
2. Loopback to Network at ICOT 3. Loopback to Network at HLIU 4. BCU Line Loopback at RT 5. BCU Payload Loopback at RT
1. Self Test
2. 900 ohms 3. 600 ohms + 2.16 Farads 4. 900 ohms + 2.16 Farads 5. Auto
1. 600 ohms
2. Line Loopback 3. Payload Loopback
1. Stop Test
2. DSX-1 Line Coding 3. HDSL Loopback Timeout
1. Line Buildout
2. Transmit Attenuation 3. Receive Attenuation 4. 2-Wire Line Impedance
1. Mode
5. Restore Defaults 6. Copy Setting to Other Parts
2. FXS Ground Start 3. TR08 Single Party 4. TR08 Universal Voice Grade
1. FXS Loop Start
5. DPO 7. Remote Part From Service 6. Tandem (E&M)
2. Provisioning 3. Status 4. Test
1. Configuration
2. Network On/Off Hook Test 3. Customer Ringing Test 4. 1000 Hz - 0dBm 0 Tone Gen
1. Digital Network Loopback
2. Set Date 3. Set Circuit ID
1. Set Time
2. On Hook 3. Off Hook
1. No Test
2. 133-266 feet 3. 266-399 feet 4. 399-533 feet
1. 0-133 feet
5. 533-655 feet 6. External
To navigate the ICOT menus, refer to the menu tree in
Figure 6. The Access Module menu options will vary
depending upon the type of modules populating the
Total Access 1000 chassis.

6 Section 61179512L2-5, Issue 1 61179512L2-5A
4. TESTING
The ADTRA HDSL system provides the ability to
monitor the status and performance of the DSX-1
signals, DS1 signals, and HDSL loop signals.
Detailed performance monitoring is provided by the
faceplate mounted RS-232 Control port of the 3192.
These features are valuable in troubleshooting and
isolating any system level problems that may occur at
installation or during operation of the HDSL system.
The following subsections describe additional testing
features.
Bantam Jacks
The faceplate of the HTU-C contains metallic splitting
bantam jacks for access to DSX-1 TX and RX from
the local loop. This permits intrusive testing of the
DSX-1 traffic on the HDSL loops.
Figure 7 illustrates the complete bantam jack
arrangement and details for specific jacks.
Loopbacks
The ICOT responds to two different loopback
activation processes. First, loopbacks may be
activated using the VT100 terminal Screens.
Second, the ICOT responds to the industry defacto
standard for HDSL loopbacks. A detailed description
of these loopback sequences is given in Appendix A.
The loopback condition imposed in all cases is a logic
level loopback at the point within the ICOT where the
DSX-1 signal passes into the HDSL modulators.
Figure 8 depicts all of the loopback locations possible
with ADTRA HDSL equipment.
Figure 8. Loopback Configurations
Figure 7. Bantam Jack Arrangement
DSX-1
MON
RX
ICOT
DATA
PUMP
LOOP DC
POWER SOURCE
DSX-1
T1
R1
DSX-1
T
R
HDSL
LOOP 1
HDSL
LOOP 2
ICOT
HDSL
LOOP 1
HDSL
LOOP 2
EQ
RX
DSX-1
MON
TX
EQ
TX
5. DEPLOYMENT GUIDELINES
The ADTRA ICOT system is designed to provide
DS1 based services over loops designed to comply
with carrier service area (CSA) guidelines. CSA
deployment guidelines are given below:
1. All loops are non-loaded only.
2. For loops with 26-AWG cable, the maximum
loop length including bridged tap lengths is 9 kft.
3. For loops with 24-AWG cable, the maximum
loop length including bridged tap lengths is
12 kft.
4. Any single bridged tap is limited to 2 kft.
5. Total bridged tap length is limited to 2.5 kft.
6. The total length of multi-gauge cable containing
26-AWG cable must not exceed the following:
12 - {(3*L26)/(9- LBTAP )} (in kft)
L26= Total length of 26-AWG cable excluding
bridged taps (in kft)
LBTAP= Total length of all bridged taps (in kft)
This deployment criteria is summarized in the chart
shown in Figure 9.
DSX-1
ICOT
LOCAL
LOOP
HLIU Network-Side Loopback or
HLIU NIU Loopback
HLIU XDS1
X = Signal Inactive
X

61179512L2-5A Section 61179512L2-5, Issue 1 7
Table 4. Loop Insertion Loss Data
Frequenc Maximum Loss
(Hz) (dB)
3,000 .............................................. 12.00
10,000 ............................................ 15.00
50,000 ............................................ 25.50
100,000 .......................................... 30.00
150,000 .......................................... 32.75
196,000 .......................................... 35.00
200,000 .......................................... 35.25
250,000 .......................................... 37.50
300,000 .......................................... 42.00
Table 3. HDSL Loss Values
(200 kHz cable loss in dB/kft at 135 Ω)
Cable Gauge
26
26
24
24
22
22
19
19
Cable T pe
PIC
Pulp
PIC
Pulp
PIC
Pulp
PIC
Pulp
Temperature
68°90°120°
3.902 4.051 4.253
4.030 4.179 4.381
2.863 2.957 2.083
3.159 3.257 3.391
2.198 2.255 2.333
2.483 2.450 2.629
1.551 1.587 1.634
1.817 1.856 1.909
Table 5. ICOT Troubleshooting Guide
Solution
1. Make sure the ICOT is properly seated in the housing.
2. Verify that the ICOT is delivering sufficient simplex voltage to the loops, if line powered.
3. If steps 1 and 2 pass, replace the ICOT.
1. Verify that the loop conforms with CSA guidelines (not too long, etc.).
2. Verify that the tip and ring of each HDSL loop belong to the same twisted pair.
3. Verify that loop loss at 200 kHz is not greater than 35.25 dB.
4. Verify that noise on both HDSL loops is within acceptable limits.
5. If steps 1 through 4 pass and loop sync is still not available, replace the unit with one known
to be in proper working condition.
Condition
All front panel indicators are Off.
Power is present and adequate, but
loop sync is not available (LP1
and/or LP2 LEDs are Off).
Figure 9. CSA Deployment Guidelines
0
12
11
10
9
8
7
6
5
4
3
2
1
0
1234
WORKING LENGTH OF 26 GAUGE CABLE (KFT)
WORKING LENGTH OF 24 GAUGE (OR COARSER) CABLE (KFT)
56789
2.5 2.0 1.5 1.0 0.5 0.0
TOTAL
BRIDGED
TAP
LENGTH
(KFT)
VALID CSA CABLE LENGTHS
INVALID CSA CABLE LENGTHS
Loop loss per kft for other wire is summarized in
Table 3.
Recommended maximum local loop loss information
for PIC cable at 70°F, 135 Ω resistive termination is
provided in Table 4.
An approximation for the maximum amount of
wideband noise on an HDSL local loop as measured
by a 50 kb filter is -31 dBrn.
An approximation for the maximum level of impulse
noise as measured using a 50 kb filter on an HDSL
loop is -50 dBrn.
NOTE
These approximations are to be used as guidelines
only and may vary slightly on different loops.
Adhering to the guidelines should produce
performance in excess of 10-7 BER.
6. ICOT TROUBLESHOOTING PROCEDURES
Use Table 5 to troubleshoot the ADTRA Total
Access ICOT.

8 Section 61179512L2-5, Issue 1 61179512L2-5A
7. SPECIFICATIONS
Product specifications are detailed in Table 6.
Table 6. 3192 ICOT Specifications
Loop Interface
Modulation Type ........................................... 2B1Q
Mode .............................................................. Full Duplex, Echo Cancelling
umber of Pairs ............................................ Two
Bit Rate .......................................................... 784 kbps per pair
Baud Rate ...................................................... 392K baud per pair
Service Range ................................................ Defined by Carrier Service Area Guidelines
Loop Loss ...................................................... 35 dB maximum @ 196 kHz
Bridged Taps ................................................. Single Taps < 2000 feet, Total Taps < 2500 feet
Performance .................................................. Compliant with Bellcore TA- WT-001210
HDSL Tx Signal Level ................................. 13.5 dBm
Input Impedance ............................................ 135 Ω
Return Loss ................................................... 20 dB (40 kHz to 200 kHz)
Network Interface
4-WIRE DSX-1
DSX-1 Output Level ..................................... 0 dB
DSX-1 Line Build Out .................................. 0-133 feet ABAM
134-266 feet ABAM
267-399 feet ABAM
400-533 feet ABAM
534-655 feet ABAM
DSX-1 Line Code .......................................... AMI, B8ZS
DSX-1 Format ............................................... SF, ESF, SLC-96
DSX-1 Channelization .................................. Channels 1-12 on HDSL Loop 1, Channels 13-24 on HDSL Loop 2
Power
Tested with the ADTRAN Total Access 1000 RT ( /N 1179001L1).
Total Power ..................................................... -48 VDC @ 273 mA with HTU-R
HTU-C Power Dissipation .............................. 5.503 watts with HTU-R
Span Power ...................................................... ±135 VDC (Internally Generated) current limited at 400 mA
Fusing .............................................................. 3.00 A (not field replaceable)
Clock
Clock Sources ................................................ Internal, DSX-1 Derived
Internal Clock Accuracy ............................... ± 25 ppm (exceeds Stratum 4). Meets T1.101 timing requirements.
Tests
Diagnostics .................................................... Self-Test, Local Loopback (ICOT), Remote Loopback (LIU or BCU)
Ph sical
Dimensions .................................................... 1-3/8 in. Width, x 4 in. Height, x 10 in. Length
Weight ........................................................... Approximately 11 oz
Environment
Temperature .................................................. Operating (Standard): -40°C to +70°C; Storage: -40°C to +85°C
Part Number
3192 ICOT ..................................................... 1179512L2

61179512L2-5A Section 61179512L2-5, Issue 1 9
8. MAINTENANCE
ADTRA does not recommend that repairs be
attempted in the field. Repair services are obtained by
returning the defective unit to ADTRA Customer
Service.
9. WARRANTY AND CUSTOMER SERVICE
ADTRA will replace or repair this product within ten
(10) years from the date of shipment if it does not meet
its published specifications or fails while in service.
Refer to ADTRA U.S. and Canada Carrier Networks
Equipment Warranty, document 60000087-10.
Contact Customer And Product Service (CAPS) prior
to returning equipment to ADTRA .
For service, CAPS requests, or further information,
contact one of the following numbers:
ADTRAN Sales
Pricing/Availability
[phone]
ADTRAN Technical Support
Pre-sales Applications/Post-sales Technical Assistance
[phone]
Standard hours: Monday-Friday, 7 a.m. - 7 p.m. CST
Emergency hours: 7 days/week, 24 hours/day
ADTRAN Repair/CAPS
Return for Repair/Upgrade
[phone]
Repair and Return Address
ADTRA , Inc.
CAPS Department
901 Explorer Boulevard
Huntsville, Alabama 35806-2807

10 Section 61179512L2-5, Issue 1 61179512L2-5A

61179512L2-5A Section 61179512L2-5, Issue 1 A-1
HDSL MAINTENANCE MODES
This Appendix describes operation of the HDSL
system with regard to detection of in-band and ESF
facility data link loopback codes.
Upon deactivation of a loopback, the HDSL system
will synchronize automatically.
Loopback Process Description
In general, the loopback process for the HDSL
system elements is modeled on the corresponding
DS1 system process. Specifically, the ICOT
loopback is similar to an Intelligent Office Repeater
loopback, and the HLIU loopbacks are similar to an
inline T1 Repeater loopback.
In-band control code sequences are transmitted over
the DS1 link by either the insert or overwrite
method. The HDSL elements respond to either
method. The insert method produces periodic
control sequences that are not overwritten by the
DS1 framing bits. The overwrite method produces
periodic control sequences. However, once per
frame, the framing bit overwrites one of the bits in
the control sequence. The unit can detect the
loopback activation or deactivation code sequence
only if an error rate of 1E-03 or better is present.
Loopback Control Codes
NOTE
In all control code sequences presented, the
in-band codes are shown with the left-most bit
transmitted first, and the ESF data link codes
with right-most bit transmitted first.
Control sequences are summarized below.
Arm/ 11000 (also known as a 2-in-5 pattern)
The HLIU will loop up toward the network. o
AIS or errors will be sent as a result of this
loopback. The ICOT and HRE will arm. When
sent from the customer, this code will arm all units.
Appendix A
HDSL Loopbacks
Arm/ FF48 (1111 1111 0100 1000)
ESF facility data link: ESF only; when sent from the
network, all units will be armed and an HLIU
network loopback will be activated. This code has
no functionality when sent from the customer.
Disarm/11100 (also known as a 3-in-5
pattern)
All units are removed from the armed state. If any
of the units are in loopback when the 11100 pattern
is received, they will loop down.
Disarm/ FF24 (1111 1111 0010 0100)
ESF facility data link: disarms and/or loop down all
units.
ICOT Network Loop Up/ D3D3 (1101 0011
1101 0011)
If the units have been armed and no units are in
loopback, the ICOT will loop up toward the
network, 2-second of AIS (all 1’s) will be sent,
5-second of data will pass, and then 231-bit errors
will be injected into the DSX-1 signal. As long as
the pattern continues to be sent, 231-errors will be
injected every 20-second. When the pattern is
removed, the unit will remain in loopback. If the
pattern is reinstated, the injection of 231-bit errors
will resume at 20-second intervals.
HRE Network Loop Up/ C741 (1100 0111
0100 0001)
If an HRE is present, the units have been armed, the
HRE will loop up toward the network, 2-second of
AIS (all 1’s) will be sent, 5-second of data will pass,
and then 10-bit errors will be injected into the
DSX-1 signal. As long as the pattern continues to
be sent, 10 errors will be injected every 20-second.
When the pattern is removed, the unit will remain in
loopback. If the pattern is reinstated, the injection
of 10-bit errors will resume at 20-second intervals.
HLIU Loop-up/C742 (1100 0111 0100 0010)
ESF facility Data link: ESF only; when sent from
the network, an HLIU network loopback is activated
and a 20-bit error confirmation is sent. When sent
from the customer, an HLIU customer loopback is
activated with a 20-bit error confirmation.

A-2 Section 61179512L2-5, Issue 1 61179512L2-5A
Loop Down/9393 (1001 0011 1001 0011)
All units currently in loopback will loop down, but
remain in the armed state.
Query Loopback/D5D5 (1101 0101 1101
0101)
If the units are armed and the ICOT, HRE, or HLIU
are in network loopback, errors are injected into the
DSX-1 signal upon detection of the query loopback
pattern. As long as the pattern continues to be sent,
errors are injected again every 20-seconds. The
number of errors injected each time depends on
which unit is in loopback. 231 errors are injected if
the ICOT is in network loopback, 20 at a time if the
HLIU is in network loopback, 10 at a time if the
HRE is in network loopback.
Query Loop Parameters/DBDB (1101 1011
1101 1011)
If the units are armed, errors are injected into the
DSX-1 signal upon detection of the query loop
parameters pattern. As long as a pattern continues
to be sent, errors are injected again every 20
seconds. The number of errors injected each time
depends on the current status of signal quality and
pulse attenuation parameters on each loop. 111
errors are injected if all HDSL receiver points
(ICOT LP1/LP2, HRE#1 ET LP1/LP2, HRE #1
CST LP1/LP2, and HLIU or Total Access 1000 RT
LP1/LP2) indicate pulse attenuation is 30 or lower
and signal quality (margin) is 6 dB or higher. 11
errors at a time are injected if any of the 8 receiver
points indicate pulse attenuation is greater than 30
dB and/or signal quality (margin) is less than 6 dB.
Loopback Time Out Override/D5D6 (1101
0101 1101 0110)
If the units are armed and this pattern is sent, the
loopback time out will be disabled. The time out
option will be updated on the Provisioning Menu of
the ICOT (viewable through the RS-232 port) to
O E. As long as the units remain armed, the time
out will remain disabled. When the units are
disarmed, the loopback time out will return to the
value it had before the D5D6 code was sent.
Span Power Disable/6767 (0110 0111 0110
0111)
If the units are armed and this pattern is sent, the
ICOT will deactivate its span power supply, turning
off the HLIU and HRE (if present). As long as the
pattern continues to be sent, the span power supply
will remain disabled. When the pattern is no longer
being sent, the ICOT will reactivate its span power
supply, turning the remote unit(s) on. All units will
retrain and return to the disarmed and unlooped
state.

®Section 61179512L2-10A
Issue 1, February 2004
CLEI Code: VACJCXBC_ _
61179512L2-10A
NOTE
The alarm label as shown on the above illustation is placed on the ICOT for deployment with the Total
Access 1124. If the ICOT module is not being deployed with the Total Access 1124, remove this label from
the front panel.
LP1
LP2
DSX
ALM
LBK
H
D
S
L
R
S
2
3
2
1179512L2
TA1000 ICOT
LED is red and Craft port
is inoperative when
deployed with TA1124
Alarm Label
3192 Integrated Central Office Terminal (ICOT)
Document Addendum for 61179512L2-5A