ADTRAN HDSL4 T200 H4TU-R Instruction Manual

61222426L1-5B 1
Section 61222426L1-5B
Issue 2, October 2003
CLEI Code: T1L5JZTCA _ _
T200 HDSL4 Transceiver Unit
for the Remote End
Installation and Maintenance Practice
1. GENERAL
The ADTRAN 4-wire T200 HDSL4 transceiver unit
for the remote end (H4TU-R , P/N 1222426L1, is a
network terminating unit used to deploy an HDSL4 T1
circuit using 4-wire metallic facilities, see Figure 1.
The T200 H4TU-R is a T200 mechanics card which
will fit T200 or T400 mechanic enclosures. The
H4TU-R can be housed in the ADTRAN standalone
metal enclosures (P/N 1242034Lx or 1245034L1 .
Refer to the appropriate ADTRAN practice for more
information. The T200 H4TU-R card can also plug
into the ADTRAN HR12 HDSL4 remote shelf (P/N
1242007Lx , or the ADTRAN HR4 HDSL4 remote
shelf (P/N 1242008L1 .
Figure 1. ADTRAN T200 H4TU-R
Trademarks: Any brand names and product names included in this document are
trademarks, registered trademarks, or trade names of their respective holders.
CONTENTS
1. General .................................................................................. 1
2. Installation ............................................................................. 2
3. Connections ........................................................................... 4
4. HDSL4 System Testing ........................................................ 4
5. Front Panel Operation ........................................................... 6
6. Control Port Operation ......................................................... 6
7. HDSL4 Deployment Guidelines ......................................... 17
8. Troubleshooting Procedures ............................................... 22
9. Maintenance ........................................................................ 22
10. Product Specifications ........................................................ 22
11. Warranty and Customer Service ......................................... 22
Appendix A. HDSL4 Loopbacks.............................................. A-1
FIGURES
Figure 1. ADTRAN T200 H4TU-R ......................................... 1
Figure 2. H4TU-R Edge Connector Wiring ............................. 4
Figure 3. H4TU-R MON Diagram .......................................... 4
Figure 4. HDSL4 Loopbacks ................................................... 5
Figure 5. RS-232 (DB-9 Connector Pinout ............................ 6
Figure 6. HDSL4 Main Menu .................................................. 8
Figure 7. Unit Information Screen ........................................... 9
Figure 8. Provisioning Screen .................................................. 9
Figure 9. Span Status Screen ................................................. 10
Figure 10. Detailed Status Screen ............................................ 10
Figure 11. Loopbacks and Test Screen .................................... 11
Figure 12. 15-Minute Performance History Line Data
Screen ..................................................................... 11
Figure 13. 24-Hour Performance History Line Data Screen ... 12
Figure 14. Performance Data Definitions Screen .................... 12
Figure 15. Performance Data Definitions Screen (continued ... 13
Figure 16. Scratch Pad, Circuit ID, Time/Date Screen ............ 13
Figure 17. Terminal Modes Menu ........................................... 14
Figure 18. T1 Alarm History Screen ........................................ 15
Figure 19. HDSL4 Span History Screen .................................. 15
Figure 20. Event History Screen .............................................. 16
Figure 21. System PM/Screen Report Screen .......................... 16
Figure 22. Virtual Terminal Control Screen ............................ 17
Figure 23. HDSL4 Circuit Segments ....................................... 18
Figure 24. Resistance Budget Span Powering Two
Repeaters ................................................................ 20
Figure 25. Resistance Budget Span PoweringTwo
Repeaters (Example .............................................. 21
TABLES
Table 1. Compliance Codes .................................................... 2
Table 2. Front Panel Indicators .............................................. 3
Table 3. Screen Abbreviations ................................................ 7
Table 4. Attenuation Limits from DSL Assistant ................. 18
Table 5. Range Limits: 26 GA Single Segment Only .......... 18
Table 6. Range Limits: 24 GA Single Segment Only .......... 18
Table 7. Single Pair Cable DC Resistance Value ................. 19
Table 8. HDSL4 Insertion Loss Values ................................ 22
Table 9. Single Span and First Segment of Repeatered
Loop ........................................................................ 22
Table 10. Second and Third Segment of Repeatered Loop .... 22
TX
RX
REM
LOC
LBK
1222426L1
DSL 1
DSL 2
DS1
ALM
(GRN)
SF
(YEL)
ESF/
(GRN)
AMI
(YEL)
B8ZS /
(GRN)
RLB
(YEL)
LLB /
RX
M
O
N
TX
R
S
2
3
2
Table 11. Troubleshooting Guide ........................................... 23
Table 12. ADTRAN T200 H4TU-R Specifications ............... 24
Table A-1. HDSL4 Loopback Control Codes ........................ A-2
Table A-2. Loopback and Control Codes ....................... A-3, A-4

61222426L1-5B
2
The T200 H4TU-R works with multiple list versions
of the HDSL4 transceiver unit for the central office
(H4TU-C and repeater (H4R as listed below.
Unit Number Description
118141xL4………Total Access 3000 H4TU-C
118141xL5………Total Access 3000 H4TU-C
with Protection Switching
122x401L4………220/E220 H4TU-C
122x403L4………DDM+ H4TU-C
122x404L4………3192 H4TU-C
122x407L4………H4TU-C for Soneplex
122x441L1 ........... T200 H4R
122x445L1 ........... 239 H4R
Note: x = any generic number
The T200 H4TU-R can be deployed in circuits using
one H4TU-C, one H4TU-R, and up to two H4Rs.
The T200 H4TU-R terminates local loop HDSL4
signals originating from the Central Office (CO unit
and transforms the HDSL4 signal into traditional DS1
signals to be delivered to the customer.
The T200 H4TU-R (P/N 122X426L7 can be used with
any H4TU-C to complete a fully span-powered HDSL4
circuit with up to two H4Rs. Span power is provided
from the H4TU-C.
NOTE
This unit is intended for span power only. If a
locally powered unit is needed, refer to P/N
122X424L7.
Revision History
This is the second release of this document. This
revision is to update the screens.
2. INSTALLATION
C A U T I O N !
SUBJECT TO ELECTROSTATIC DAMAGE
OR DECREASE IN RELIABILITY.
HANDLING PRECAUTIONS REQUIRED.
After unpacking the unit, inspect it for damage. If
damage is discovered, file a claim with the carrier,
then contact ADTRAN. For more information, refer
to the Warranty and Customer Service section .
The settings on the H4TU-C are encoded and
transmitted to the H4TU-R once the circuit has
achieved synchronization. There are no switch
settings on the H4TU-R.
Remote Provisioning
This H4TU-R can be used to provision the entire
HDSL4 circuit via the craft interface.
Compliance
Table 1 shows the compliance codes for the
H4TU-R. This product is intended for installation in
equipment with a Type “B”or “E” enclosure.
WARNING
Up to –200 VDC may be present on
telecommunications wiring. Ensure chassis
ground is properly connected.
This product meets all requirements of Bellcore
GR-1089-CORE (Class A2 , ANSI T1.418-2002 and is
NRTL listed to the applicable UL standards.
Code Input Output
Power Code (PC) C C
Telecommunication Code (TC) X X
Installation Code (IC) A –
Table 1. Compliance Codes

61222426L1-5B 3
Table 2. Front Panel Indicators
TX
RX
REM
LOC
LBK
1222426L1
DSL 1
DSL 2
DS1
ALM
(GRN)
SF
(YEL)
ESF/
(GRN)
AMI
(YEL)
B8ZS /
(GRN)
RLB
(YEL)
LLB /
RX
M
O
N
TX
R
S
2
3
2
emaNnoitacidnInoitpircseD
1LSD
neerGnigramlangisdna,detcetedyltnerrucsrorreon,cnys1pooLLSD ≥Bd3
deRBd3<nigramlangisro,detcetedgniebsrorre,cnys1pooLLSDoN
2LSD
neerGnigramlangisdna,detcetedyltnerrucsrorreon,cnys2pooLLSD 3≥ Bd
deRBd3<nigramlangisro,detcetedgniebsrorre,cnys2pooLLSDoN
1SD
neerGdetcetedgniebyltnerrucsrorreondnatneserpsilangis1-XSD
deRsrorrehtiwtneserpsilangisrolangis1-XSDoN
MLA
ffOtneserpmralaevitcaoN
deRtinuehtotlangis1-XSDfossoL
wolleYetomerehtotlangis1SDfossoL
FS/FSE
ffOatadDEMARFNUdetcetedsahtinU
wolleYatadFSEdetcetedsahtinU
neerGatadFSdetcetedsahtinU
IMA/SZ8B
wolleYataddedocSZ8BdetcetedsahtinU
neerGatadIMAdetcetedsahtinU
BLR/BLL
ffOkcabpoolniTONsitinU
wolleYkcabpoolnisitinusihT
neerGremotsucehtdrawotkcabpooLnisiC-UT4HehT
Front Panel Indicators
There are seven front panel status LEDs. Each
indicator is described in Table 2.

61222426L1-5B
4
3. CONNECTIONS
All connections of the H4TU-R are made through card
edge connectors. Figure 2 gives the card edge pin
assignments for the H4TU-R circuit pack.
When the circuit pack is installed in any of the
H4TU-R enclosures, all connections are made through
the enclosure backplanes. See the following
ADTRAN documents for more information:
Document No. Description
61242007LX-5 ...... HR12 I&M
61242008L1-5 ....... HR4 I&M
61242034L2-5 ....... T400 Single Mount I&M
(removable RJ-48 jacks
61242034L3-5 ....... T400 Single Mount HV I&M
61245034L1-5 ....... T200 Dual Mount I&M
CAUTION
Ensure chassis ground is properly connected for
either standalone or shelf-mounted applications.
4. HDSL4 SYSTEM TESTING
The T200 H4TU-R provides diagnostic, loopback, and
signal monitoring capabilities.
The seven front panel LEDs provide diagnostics for
HDSL4 loops, DS1 signals, alarms, provisioning, and
loopbacks. Refer to Section 2, Installation for details.
The H4TU-R provides a bidirectional loopback via the
loopback button on the front panel. Refer to H4TU-
Network Loopbacks and Customer Loopbacks sections
for more details.
The H4TU-R also provides a nonintrusive test point of
the DS1 signal via the jack labeled MON on the front
panel.
DS1 MON Bantam Jacks
The MON jack provides a nonintrusive access point
for monitoring the characteristics of the transmit and
receive signals at the DS1 interface point.
For example, the DS1 MON jack on the H4TU-R
could be used to connect to a bit error rate tester to
monitor for synchronization, test patterns, etc.
Figure 3 is an illustration of specific jack detail.
Figure 2. H4TU-R Edge Connector Wiring
Figure 3. H4TU-R MON Diagram
Rx
Tx
DS1
MON
CPE
DS1
INTERFACE
H4TU-R
T
R
T1
R1
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
Chassis Ground
HDSL4 Ring Loop 1
Chassis Ground
DS1-R (from customer interface)
HDSL4 Tip Loop 2
Protection Control
HDSL4 Ring Loop 2
DS1-T (from customer interface)
DS1-R1 (to customer interface)
+5 VDC Protect Switching
GND Protect Switching
HDSL4 Tip Loop 1
DS1-T1 (to customer interface)
Chassis Ground

61222426L1-5B 5
NOTE
For the MON jacks, the Tx and Rx indications
relate to the direction of the CPE signal.
H4TU-R Network Loopbacks
See Figure 4. The H4TU-R responds to multiple
loopback activation processes as follows. The
loopback position is a logic loopback located within
the H4TU-R internal HDSL4 transceiver.
First, manual loopback activation may be
accomplished using the control port of the H4TU-R.
Second, the H4TU-R will respond to the industry
HDSL loopback codes as designated in the ANSI
document T1E1.4/92. A synopsis of the method
described by ANSI is presented in
Appendix A.
Third, the H4TU-R responds to T1 Network Interface
Unit (NIU loopback codes as described in Bellcore
TR-TSY-000312. The NIU loopback codes are as
follows:
In-Band Codes
Loop up ....... 11000
Loop down .. 11100
ESF Codes
Loop up ....... 1111 1111 0100 1000
Loop down .. 1111 1111 0010 0100
Receiving the in-band codes for more than five
seconds or the ESF codes four consecutive times will
cause the appropriate loopback action. The ESF codes
must be transmitted in the Facility Data Link (FDL .
NOTE
The NIU loopback option must be enabled
before the H4TU-R can respond to the NIU
loopback.
The H4TU-R will respond to the loop up codes by
activating the NIU loopback from either the disarmed
or armed state. The loop down codes will return the
H4TU-R to the state from the armed or loop up state.
Refer to Appendix A for more details on loopbacks
and loopback arming sequences.
Figure 4 illustrates all of the possible loopback
locations of the ADTRAN HDSL4 equipment.
Customer Loopbacks
In addition to the loopbacks in the direction of the
network, the H4TU-R may also be looped back in the
direction of the customer. The H4TU-C and H4TU-R
customer-side loopbacks are illustrated in Figure 4.
NOTE
Network and customer loopbacks are governed
by the loopback time out option. (Default=120
minutes).
Figure 4. HDSL4 Loopbacks
DSX-1
H4TU-C
LOCAL
LOOP
H4TU-C Network-Side Loopback
H4TU-R
H4TU-C
LOCAL
LOOP
H4TU-R Customer-Side Loopback
H4TU-R
H4TU-C
LOCAL
LOOP
H4TU-C Customer-Side Loopback
H4TU-R
X
X
DS1
DSX-1
DSX-1
DSX-1
H4TU-C
LOCAL
LOOP
H4TU-R Network-Side Loopback and/or
H4TU-R NIU Loopback
H4TU-R
X
DS1
DS1
DS1
X
AIS
AIS
X
H4R Customer-Side Loopback
DS1
AIS
AIS
H4TU-C
H4R Network-Side Loopback
H4TU-R
DS1DSX-1
DSX-1
H4R
AIS
AIS
AIS
X
H4TU-C H4TU-RH4R
H4R1 Network-Side Loopback
DS1DSX-1
H4TU-C H4TU-RH4R1 H4R2
AIS
X
H4R1 Customer-Side Loopback
DS1DSX-1
H4TU-C H4TU-RH4R1 H4R2
X = Signal Inactive
X
AIS
H4R2 Network-Side Loopback
DS1DSX-1
H4TU-C H4TU-RH4R1 H4R2
AIS
X
H4R2 Customer-Side Loopback
DS1DSX-1
H4TU-C H4TU-RH4R1 H4R2
X

61222426L1-5B
6
5. FRONT PANEL OPERATION
The front panel contains two pushbuttons. These are
labeled LOC and REM.
The LOC pushbutton controls a bidirectional loopback
at the H4TU-R. Pressing the button causes a
bidirectional loopback to occur. If the bidirectional
loopback is active, pressing the button a second time
will disable the loopback.
The REM pushbutton controls a loopback at the
H4TU-C. Pressing the button causes a loopback
toward the H4TU-R to occur. If the loopback is
active, pressing the button a second time will disable
the loopback.
6. CONTROL PORT OPERATION
The H4TU-R provides a front panel-mounted DB-9
connector that supplies an RS-232 interface for
connection to a controlling terminal. The pinout of
the DB-9 is illustrated in Figure 5.
The terminal interface operates at data rates from 1.2,
2.4, 4.8, 9.6, and 19.2 kbps. The asynchronous data
format is fixed at 8 data bits, no parity, and 1 stop bit.
NOTE
If using a personal computer with terminal
emulation capability, be sure to disable
any power-saving programs.Otherwise,
communication between the PC and the
HDSL4 unit may be disrupted, resulting in
misplaced characters or screen time outs.
Figure 5. RS-232 (DB-9) Connector Pinout
6
7
8
9
1
2
3
4
5
TXD (Transmit Data)
RXD (Receive Data)
SGN (Signal Ground)

61222426L1-5B 7
Table 3. Screen Abbreviations
Abbreviation Definition
ES ................................ Errored Seconds
DSX/DS1 ...................... (SF) Second in which BPVs or frame bit error occurs
(ESF) Second in which a BPV or CRC error occurs
HDSL4 ......................... Second in which a CRC error occurs
SES .............................. Severely Errored Seconds
DSX/DS1 ..................... (SF) Second in which 1544 BPVs or 8 frame bit errors occur
(ESF) Second in which 1544 BPVs or 320 CRC errors occur
HDSL4 ......................... Second in which 50 CRC error occurs
UAS ............................. Unavailable Seconds
DSX/DS1 ........ Second in which there is a loss of signal or sync
HDSL4 ............ Second in which there is a loss of signal or sync
SF ................................. Superframe Format
ESF .............................. Extended Superframe Format
B8ZS ............................ Bipolar with 8 Zero Substitution
AMI ............................. Alternate Mark Inversion
LBO ............................. Line Build Out
BPV ............................. Bipolar Violation
DSX/DS1 ........ Second in which a bipolar violation occurs
NIU .............................. T1 Network Interface Unit
S/N ............................... Serial Number
15M.............................. 15-Minute period
24H .............................. 24-Hour period
Operation
For abbreviations used in the screen diagrams, see
Table 3.

61222426L1-5B
8
The screens illustrated in Figures 6 through 22 apply
to an HDSL4 circuit deployed with ADTRAN's
HDSL4 technology. The circuit includes an H4TU-C,
up to two H4Rs and an H4TU-R. Other
configurations are possible (for example, HDSL4
repeater, other vendor's equipment and their displays
will vary slightly from those shown in this section.
A terminal session is initiated by entering multiple
space bar characters which are used by the H4TU-R to
determine the speed of the terminal. Once the speed
has been determined, an HDSL4 Main Menu is
presented as illustrated in Figure 6.
Figure 6. HDSL4 Main Menu
The Main Menu provides access to detailed
performance and configuration information. Selecting
the corresponding number or letter can access the
following screens:
1. HDSL4 Unit Information
2. Provisioning
3. Span Status
4. Loopbacks and Test
5. Performance History
6. Scratch Pad, Circuit ID, Time/Date
7. Terminal Modes
8. Alarm History
9. Event History
10. System PM/Screen Report
11. Virtual Terminal Control
Circuit ID: 01/25/02 14:15:16
Adtran HDSL4 Main Menu
1. HDSL4 Unit Information
2. Provisioning
3. Span Status
4. Loopbacks and Test
5. Performance History
6. Scratch Pad, Ckt ID, Time/Date
7. Terminal Modes
8. Alarm History
9. Event History
10. System PM/Screen Report
11. Virtual Terminal Control
Selection:

61222426L1-5B 9
The HDSL4 Unit Information screen, illustrated in
Figure , provides detailed product information on
each component in the HDSL4 circuit. This screen
also displays contact information for ADTRAN
Technical Support, Internet site, and address.
Figure 7. Unit Information Screen
The Provisioning screen, illustrated in Figure 8,
displays the current provisioning settings for the
HDSL4 circuit. To change a particular option setting,
select the appropriate number, and a new menu will
appear with a list of the available settings.
NOTE
The provisioning options listed in Figure 8 are
the factory default values.
Figure 8. Provisioning Screen
CIRCUIT ID: 01/25/02 11:52:00
PRESS ESC TO RETURN TO PREVIOUS MENU
ADTRAN
901 EXPLORER BOULEVARD
HUNTSVILLE, ALABAMA 35806-2807
--------------------- FOR INFORMATION OR TECHNICAL SUPPORT ---------------------
SUPPORT HOURS ( NORMAL 7AM - 7PM CST, EMERGENCY 7 DAYS X 24 HOURS )
PHONE: [phone] / 888.873.HDSL FAX: [phone] INTERNET: WWW.ADTRAN.COM
--------------------------------------------------------------------------------
ADTN H4TU-C ADTN H4TU-R
P/N: 1222401L1 P/N: 1222426L1
S/N: 123456789 S/N: 123456789
CLEI: T1L5TWPCAA CLEI: T1L5JZTCAAA
MANF: 01/01/2000 MANF: 01/01/2000
VER: 24 1 A00000 VER: 27 2 A00000
ADTN H4R1 ADTN H4R2
P/N: 1221445L1 P/N: 1221445L1
S/N: BB50A8343 S/N: BB50A8353
CLEI: T1R5YP3DAA CLEI: T1R5YP3DAA
MANF: 02/12/2002 MANF: 02/12/2002
Circuit ID: 01/25/02 11:15:25
Provisioning
1. DSX-1 Line Buildout = 0-133 Feet
2. DSX-1/DS1 Line Code = B8ZS
3. DSX-1/DS1 Framing = ESF
4. Forced Frame Conversion = Disabled
5. Smartjack Loopback = Enabled
6. Loopback Timeout = 120 Min
7. Latching Loopback Mode = T1 (Disabled)
8. DS1 TX Level = -7.5 dB
9. Customer Loss Indicator = AIS / CI
10. PRM Setting = None
11. Loop Atten Alarm Thres = 34dB
12. SNR Margin Alarm Thres = 04dB
13. Remote Provisioning = Enabled
Selection:

61222426L1-5B
10
The Span Status Screen (Figure 9 provides quick
access to status information for each HDSL4 receiver
in the circuit.
The Detailed Status selection from the System Status
Menu (Figure 10 displays the HDSL4 margin,
attenuation, and estimated insertion loss.
From this screen, Min/Max can be reset.
NOTE
The insertion loss reading shown on the Detailed
Status Screen is an approximation that is valid
for some loops. Caution should be used when
using this value.
Figure 10. Detailed Status Screen
Figure 9. Span Status Screen
CIRCUIT ID:ABC123 01/25/02 11:52:00
Press ESC to return to previous menu
Span Status Screen
______ ______ ______ ______
NET | | | | | | | | CUST
| | | | | | | |
----->| |-------| |-------| |----------------------| |----->
| | | | | | | |
| | | | | | | |
<-----| |-------| |-------| |----------------------| |<-----
| | | | | | | |
DSX-1 |______| |______| |______| |______| DS1
H4TUC H4R 1 H4R 2 H4TUR
1. View Detailed Status
Selection:
CIRCUIT ID:ABC123 01/25/02 11:52:00
Press ESC to return to previous menu
Detailed Status Screen
LOOP 1 LOOP 2
MARGIN ATTEN ESTIMATED MARGIN ATTEN ESTIMATED
Interface (CUR/MIN/MAX) (CUR/MAX) INS. LOSS (CUR/MIN/MAX) (CUR/MAX) INS. LOSS
--------- ------------- --------- --------- ------------- --------- ---------
H4TUC 17/00/17 00/00 00 17/00/17 00/00 00
H4R1 NETW 17/00/17 00/00 00 17/13/17 00/00 00
H4R1 CUST 17/17/17 00/00 00 17/00/17 00/00 00
H4R2 NETW 17/00/17 00/00 00 17/13/17 00/00 00
H4R2 CUST 17/17/17 00/00 00 17/00/17 00/00 00
H4TUR 17/00/17 00/00 00 17/00/17 00/00 00
1. Reset Min/Max
2. View Performance History
Selection:

61222426L1-5B 11
The Loopback and Test Commands Screen (Figure
11 is used to invoke or terminate all available HDSL4
loopbacks. Each HDSL4 circuit component can be
looped toward the network or customer from this
screen.
The Performance History screens (Figure 12 and
Figure 13) display the historical HDSL4 and T1
performance data in several different registers.
At each 15-minute interval, the performance
Figure 11. Loopbacks and Test Screen
Figure 12. 15-Minute Performance History Line Data Screen
CIRCUIT ID:ABC123 01/25/02 11:52:00
Press ESC to return to previous menu
Loopback and Test Commands
______ ______ ______ ______
NET | | | | | | | | CUST
| | | | | | | |
<-----| |-------| |-------| |----------------------| |----->
| | | | | | | |
| | | | | | | |
----->| |-------| |-------| |----------------------| |<-----
| | | | | | | |
DSX-1 |______| |______| |______| |______| DS1
H4TUC H4R 1 H4R 2 H4TUR
1. Run Self Tests 7. H4R1 Loopup Net
2. H4TU-C Loopup Net 8. H4R1 Loopup Cust
3. H4TU-C Loopup Cust 9. H4R2 Loopup Net
4. H4TU-R Loopup Net 10. H4R2 Loopup Cust
5. H4TU-R Loopup Cust
6. H4TU-R Loopup Bilateral
Circuit ID: 01/25/02 02:02:38
Menu 15 Minute H4TUC DSX-1 Performance Data
1. Definitions ES-L SES-L LOSS-L PDVS-L B8ZS-L CV-L
2. Reset Data 000 000 000 000 000 00000
3. 15 Min Data 02:00 --- --- --- --- --- -----
4. 60 Min Data 01:45 --- --- --- --- --- -----
5. 24 Hr Data 01:30 --- --- --- --- --- -----
6. Line Data 01:15 --- --- --- --- --- -----
7. Path Data 01:00 --- --- --- --- --- -----
8. H4TUC DSX-1 00:45 --- --- --- --- --- -----
9. H4TUC LOOP 00:30 --- --- --- --- --- -----
10. H4TUR LOOP 00:15 --- --- --- --- --- -----
11. H4TUR DS1
12. H4R #1 NETW
13. H4R #1 CUST ___ ___ ___ ___
14. H4R #2 NETW | C | |#1 | |#2 | | R |
15. H4R #2 CUST -8->| |-----| |-----| |---------------| |--->
| |9 12| |13 14| |15 10| |
<---| |-----| |-----| |---------------| |<-11
|___| |___| |___| |___|
Selection:

61222426L1-5B
12
information is transferred to the 15-minute
performance data register. This unit stores
performance data in 15-minute increments for the last
24-hour period. At each 24-hour interval, the
performance data is transferred into the 24-hour
performance data registers. This unit stores up to 31
days of 24-hour interval data.
Figure 13. 24-Hour Performance History Line Data Screen
To view the performance data, select the desired
module and interface. Line (L and Path (P
Performance data can be viewed.
Abbreviations used in the Performance History
screens are defined in Data Definition screens (Figure
14 and Figure 15).
Figure 14. Performance Data Definitions Screen
CC
CC
Circuit ID: 01/25/02 02:02:16
Menu 24 Hour H4TUC DSX-1 Performance Data
1. Definitions ES-L SES-L LOSS-L PDVS-L B8ZS-L CV-L
2. Reset Data 00000 00000 00000 00000 00000 0000000
3. 15 Min Data 04/16 ----- ----- ----- ----- ----- -------
4. 60 Min Data 04/15 ----- ----- ----- ----- ----- -------
5. 24 Hr Data 04/14 ----- ----- ----- ----- ----- -------
6. Line Data 04/13 ----- ----- ----- ----- ----- -------
7. Path Data 04/12 ----- ----- ----- ----- ----- -------
8. H4TUC DSX-1 04/11 ----- ----- ----- ----- ----- -------
9. H4TUC LOOP 04/10 ----- ----- ----- ----- ----- -------
10. H4TUR LOOP
11. H4TUR DS1
12. H4R #1 NETW
13. H4R #1 CUST ___ ___ ___ ___
14. H4R #2 NETW | C | |#1 | |#2 | | R |
15. H4R #2 CUST -8->| |-----| |-----| |---------------| |--->
| |9 12| |13 14| |15 10| |
<---| |-----| |-----| |---------------| |<-11
|___| |___| |___| |___|
Selection:
Circuit ID: 01/25/02 02:02:16
Performance Data Definitions
H4TUC, H4TUR, and H4R LOOP Related: HDSL4 Framing
ES-L Errored Seconds CRC>=1 or LOSW>=1
SES-L Severely Errored Seconds CRC>=50 or LOSW>=1
UAS-L Unavailable Seconds >10 cont. SES-Ls
DS1 and DSX-1 Line Related: Superframe and Extended Superframe
ES-L Errored Seconds (BPV+EXZ)>=1 or LOS>= 1
SES-L Severely Errored Seconds (BPV+EXZ)>=1544 or LOS>=1
LOSS-L Loss of Signal Seconds LOS>= 1
PDVS-L Pulse Density Violation Secs EXZ>=1; >7 zeros if B8ZS, >15 if AMI
B8ZS-L B8ZS Seconds B8ZS coded signal received
CV-L Code Violation Count (BPV+EXZ) count
NOTE: Reverse video indicates invalid data due to a terminal restart (or power
cycle), a data register reset, or a system date or time change.
N. Next
P. Previous Selection:

61222426L1-5B 13
Figure 15. Performance Data Definitions Screen (continued)
Figure 16 illustrates the Scratch Pad, Circuit ID, and
Time/Date Screen. The Scratch Pad data can be any
alphanumeric string up to 50 characters in length. The
Circuit ID can be any alphanumeric string up to 25
characters in length.
Figure 16. Scratch Pad, Circuit ID, Time/Date Screen
CIRCUIT ID: 01/25/02 11:52:00
Current Scratch Pad:
New Scratch Pad =
New Circuit ID =
New Date = / / (MM/DD/YY)
New Time = : : (HH:MM:SS)
Press TAB to skip to next entry field.
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Circuit ID: 01/25/02 02:02:16
Performance Data Definitions
DS1 and DSX-1 Path Related: Superframe Extended Superframe
ES-P Errored Seconds FE>=1 or CRC>=1 or
SEF>=1 or AIS>=1 SEF>=1 or AIS>=1
SES-P Severely Errored Seconds FE>=8 or CRC>=320 or
SEF>=1 or AIS>=1 SEF>=1 or AIS>=1
UAS-P Unavailable Seconds >10 cont. SES-Ps >10 cont. SES-Ps
SAS-P SEF/AIS Seconds SEF>=1 or AIS>=1 SEF>=1 or AIS>=1
ES-PFE Far End Errored Seconds n/a PRM bits G1-G6,SE,
or SL=1, or RAI
CV-P Code Violation Count FE count CRC error count
NOTE: Under a UAS-P condition, ES-P and SES-P counts are inhibited.
Under a SES-L or SES-P condition, the respective CV-L or CV-P count is
inhibited.
P. Previous Selection:
The time should be entered using military time (for
example, enter 3:15 p.m. as “151500” .
The date should be entered as MMDDYY (for
example, enter January 02, 2003, as “010203” .

61222426L1-5B
14
Figure 17. Terminal Modes Menu
CIRCUIT ID: 01/25/02 11:52:00
Press ESC to return to previous menu
TERMINAL MODES MENU
MANUAL UPDATE MODE:
* You can print or log screens
* No text is highlighted
* “3 SPACES TO UPDATE” appears at the top of each screen,
reminding you to press the spacebar 3 times to update the screen
* There is a delay between screen changes & updates
* After 30 min. of no interaction, a new baud rate search is begun
* Ignores input until screen is finished printing.
REAL-TIME UPDATE MODE:
* Faster of the two modes
* You cannot print screens to a log file
* Highlighting is enabled
* Recommended for daily operation
Press CTRL+T to toggle update modes on any screen.
This unit includes two terminal emulation modes.
These modes are described on the Terminal Modes
Menu, (Figure 1 ).
NOTE
Pressing CTRL T while on any screen to toggle
between Manual and Real Time Terminal Modes.
The Manual Update Mode is used to manually update
the provisioning option screens. This mode supports
efficient print screen and log file utilities for storage
of key provisioning parameters, alarm or performance
history and current system status. “3 SPACES TO
UPDATE” appears at the top of each screen. By
pressing the spacebar 3 times to refresh the screen and
to reflect the most current circuit conditions and
provisioning options.
NOTE
When operating in Virtual Terminal Mode, the
terminal baud rate should be 4.8 kbps or higher.
The remote terminal session is automatically
initiated if a terminal is connected to the H4TU-R,
and the HDSL4 loops are in sync with the
H4TU-C. When a remote terminal session is in
progress, the screens are not accessible from the
H4TU-C. Once a remote terminal session is
terminated, the screens are available at the
H4TU-C. The remote terminal session is
terminated by typing CTRL X on the terminal at
the H4TU-R. Alternatively, if there is no
keyboard input at the H4TU-R’s terminal for a
period of 5 minutes, the remote session will time
out, and the screens will once again be available
at the H4TU-C. After the 5 minute time out, the
remote terminal session can be reinstated at the
H4TU-R by pressing the space bar several times.
The default terminal emulation mode is the Real Time
Update Mode (VT100 . This mode provides real time
updating of HDSL4 circuit conditions and
provisioning options as changes occur. While in Real
Time Update Mode, the unit is anticipating baud poll
responses from the terminal.

61222426L1-5B 15
Figure 18. T1 Alarm History Screen
The T1 Alarm History screen (Figure 18 provides the
user with a detailed alarm history and events log for
the T1 circuit. This screen includes a time, date, first/
last occurrence, and count for each type of HDSL4 or
T1 alarm. The HDSL4 Span History Screen (Figure
19 lists alarms that have occurred on the span
between the H4TU-C and H4TU-R.
Figure 19. HDSL4 Span History Screen
CIRCUIT ID:ABC123 01/25/02 11:52:00
Press ESC to return to previous menu
T1 Alarm History
LOCATION ALARM FIRST LAST CURRENT COUNT
--------------------------------------------------------------------------------
H4TU-C RED(LOS/LOF) OK 000
(DSX-1) YELLOW(RAI) OK 000
BLUE(AIS) OK 000
H4TU-R RED(LOS/LOF) OK 000
(DS1) YELLOW(RAI) OK 000
BLUE(AIS) OK 000
--------------------------------------------------------------------------------
1. T1 Alarm 4. Span H4R1 to H4R2
2. Facility Alarm 5. Span H4R2 to H4TU-R
3. Span H4TUC to H4R1 C. Clear T1 Alarms
Selection:
CIRCUIT ID:ABC123 01/25/02 11:52:00
Press ESC to return to previous menu
HDSL4 Span History
LOCATION ALARM FIRST LAST CURRENT COUNT
---------------------------------------------------------------------------------
SPAN C-H1 L1 LOS OK 000
L2 LOS OK 000
H4TU-C L1 MRGN OK 000
L2 MRGN OK 000
H4R1 NET L1 MRGN OK 000
L2 MRGN OK 000
H4TU-C L1 ATTEN OK 000
L2 ATTEN OK 000
H4R1 NET L1 ATTEN OK 000
L2 ATTEN OK 000
---------------------------------------------------------------------------------
1. T1 Alarm 4. Span H4R1 to H4R2
2. Facility Alarm 5. Span H4R2 to H4TU-R
3. Span H4TUC to H4R1 C. Clear Span Alarms
Selection:

61222426L1-5B
16
Figure 21. System PM/Screen Report Screen
The Event History screen (Figure 20 provides a log
history of HDSL4 circuit events.
Figure 20. Event History Screen
CIRCUIT ID: 01/25/02 11:52:00
Press ESC to return to previous menu
Num Description of Event Date Time
-----------------------------------------------------------------
1. H4TU-R Powered Up 01/25/02 11:52:00
2. H4TU-C Powered Up 01/25/02 11:52:00
Page Number: 1/ 1 Number of Events: 2
-----------------------------------------------------------------
‘P’ - Previous Page ‘H’ - Home ‘R’ - Reset Events
‘N’ - Next Page ‘E’ - End
Selection:
The System PM/Screen Report option from the Main
Menu offers four types of reports on performance
monitoring. Selecting a report type will then display
all the reports for that category on the screen at once,
which is more efficient than stepping through the
menus individually. See Figure 21.
6. SCRATCH PAD, CKT ID, TIME/DATE
7. TERMINAL MODES
8. ALARM HISTORY
9. EVENT HISTORY
10. SYSTEM PM/SCREEN REPORT
11. VIRTUAL TERMINAL CONTROL
SELECTION: 10
ENABLE DATA LOGGING NOW.
SELECT REPORT TYPE OR PRESS ESCAPE TO CANCEL:
1) FULL SYSTEM/HISTORY REPORT
2) CURRENT STATUS REPORT
3) SYSTEM CONFIGURATION REPORT
4) ALARM/EVENT HISTORY

61222426L1-5B 17
Figure 22. Virtual Terminal Control Screen
CIRCUIT ID: 01/25/02 11:52:00
Virtual Terminal Session: Inactive
Virtual Host: no
Virtual Terminal Control
1. Log into H4TU-C
Selection:
The Virtual Terminal Control screen (Figure 22) is
used to access the unit on the far end of the circuit.

61222426L1-5B
18
7. HDSL4 DEPLOYMENT GUIDELINES
The different segments of an HDSL4 circuit are
defined in Figure 23.
1st Segment
H4TU-C 1st H4R 2nd H4R H4TU-R
2nd Segment 3rd Segment
Figure 23. HDSL4 Circuit Segments
The ADTRAN HDSL4 system provides DS1-based
services over loops designed to comply with the
guidelines given below. These guidelines apply to the
following circuit configurations:
• A single segment or an HDSL4 circuit with no
H4Rs,
• A circuit having two segments (with one H4R ,
or
• A circuit having 3 segments (with two H4Rs .
The guidelines reflected herein are for worst-case
scenarios, that is, for loops that contain a maximum
amount of disturbers, noise, etc. Actual deployment
guidelines may vary based on local policy. Please
refer to those guidelines to ensure optimum
performance.
Designing a circuit with loop attenuation greater than
the recommended maximum loss (yellow zone may
result in compromised reliability of that loop. The
guidelines are provided in numbers 1 through 9, which
follow:
1. All loops are nonloaded only
2. Any single bridged tap is limited to 2 kft.
3. Total bridged tap length is limited to 2.5 kft.
4. Bridge tap within 1000 feet of units may affect
performance of the circuit.
5. Loop Attenuation Limits. See Table 4.
6. DSL-Recommended Range Limits. See Table 5
and Table 6.
Table 4. Attenuation Limits from DSL Assistant
eguaG62 )enoZneerGtnatsissALSD(mumixaMdednemmoceR
1
ts
tnemgeStfk8.01
2
dn
3/
dr
tnemgeStfk55.01
3
dr
tnemgeS )etonees(tfk55.01
Table 5. Range Limits: 26 Gauge Single Segment Only
eguaG42 )enoZneerGtnatsissALSD(mumixaMdednemmoceR
1
ts
tnemgeStfk52.51
2
dn
3/
dr
tnemgeStfk50.51
3
dr
tnemgeS )etonees(tfk50.51
Table 6. Range Limits: 24 Gauge Single Segment Only
)enoZneerGtnatsissALSD(mumixaMdednemmoceR
maertspUmaertsnwoD
1
ts
tnemgeSBd13Bd33
2
dn
3/
dr
tnemgeSBd03Bd03

61222426L1-5B 19
ADTRAN provides an excellent computer-aided loop
design tool called DSL Assistant that provides these
loop loss design criteria automatically. The
color-coded loop attenuation results provide green
when the loss is at or below the recommended
maximum loss, yellow if the loss is more than
recommended but below the absolute maximum and
red if the loss exceeds the T1.418 standard based
absolute maximum.
NOTE
In three segment circuits (two H4Rs , individual
segment resistance values must be verified. See
paragraph Number 7 below.
7. Resistance Values. See Table .
Each of the three segments associated with span
powering two H4Rs and a H4TU-R must satisfy
the DC resistance budgets in addition to the
recommended insertion loss and loop attenuation
requirements. In general, 22 and 19 AWG
segments will be restricted by their loop
attenuation while the DC resistance will restrict
the segment reach for 26 and 24 AWG. When
designing a dual H4R loop, the first segment
should have lower DC resistance than the second
segment.
Single H4R spans do not require any restriction
due to DC resistance.
Table 7. Single Pair Cable DC Resistance Value
NOTE
A circuit that otherwise meets attenuation and
insertion loss requirements for cable reach will
encounter span powering problems if resistance
values are excessive.
The segment resistance (Ω segment is determined using
the equation provided below:
Ωsegment = L26 * Ω26 + L24 * Ω24 + L22 * Ω22 + L19 * Ω19
where : L# is the length of # AWG cable (kft,
excluding bridge taps , Ω# is the D.C.
Resistance of # AWG cable
Table 7 list single pair cable DC resistance values to
be used in equation above.
)tfk/smho(ecnatsiseR
GWAFº07*ºFº09Fº021**Fº041
91
22
42
62
564.61
600.33
894.25
574.38
381.71
644.43
987.45
711.78
162.81
606.63
522.85
185.29
979.81
640.83
615.06
322.69
atadFº021dnaFº07neewtebdetalopretnI*
atadFº021dnaFº07morfdetalopartxE**

61222426L1-5B
20
Once the resistance of each segment is confirmed,
refer to Figure 24 to decide if the H4TU-C is capable
of span powering two H4Rs and one H4TU-R.
Follow these steps to utilize the graph shown in
Figure 24:
a) Find the line on the graph which represents the
known third segment resistance. These are the
lines running diagonally across the graph labeled
300 - 1100 ohms. This line represents the upper
limit for two H4Rs plus H4TU-R span powering.
b) Find the first segment resistance on the vertical
axis.
c) Find the second segment resistance on the
horizontal axis.
d) Find the instance where the two points from
Steps b and c meet on the graph.
e) The point found in step d must be below the
upper limit line defined by the third segment
measurement (Step a). If the instance where these
two points is above this line, the H4TU-C cannot
span power two H4Rs and the H4TU-R.
Note that these measurements represent only one of
the two HDSL4 pairs.
Figure 24. Resistance Budget Span Powering Two Repeaters
3
0
0
o
h
m
s
5
0
0
o
h
m
s
7
0
0
o
h
m
s
9
0
0
o
h
m
s
1
1
0
0
o
h
m
s
HDSL4 Single Pair Resistance for Span Powering Two Repeaters and an H4TU-R
Resistance Budget
Second Segment Resistance (ohms)
First Segment Resistance (ohms)
1100
1000
900
800
700
600
500
400
300
300 400 500 600 700 800 900 1000 1100
WITHIN LIMITS
OUTSIDE LIMITS
Third Segment Resistance