ADTRAN T200 H4TU-R User Manual
X
HDSL4 T200 H4TU-R
Installation and Maintenance Practice
CONTENTS
1. General...................................................................................... 1
2. Installation ................................................................................ 2
3. Connections .............................................................................. 5
4. HDSL4 System Testing ............................................................ 5
5. Front Panel Operation ............................................................... 7
6. Control Port Operation.............................................................. 7
7. HDSL4 Deployment Guidelines ............................................. 18
8. Maintenance............................................................................ 23
9. Specifications.......................................................................... 23
10. Warranty and Customer Service ............................................. 23
Appendix A. HDSL4 Loopbacks.............................................. A-1
TABLES
Table 1. ADTRAN Unit Compatability........................................ 1
Table 2. H2TU-R Enclosure Compatibility .................................. 2
Table 3. Compliance Codes .......................................................... 2
Table 4. Front Panel Indicators ..................................................... 3
Table 5. Provisioning Options ...................................................... 4
Table 6. Attenuation limits ......................................................... 18
Table 7. Range Limits: 26 Gauge / 70°F / PIC .......................... 18
Table 8. Range Limits: 24 Gauge / 70°F / PIC .......................... 18
Table 9. Single Pair DC Resistance Value.................................. 19
Table 10. HDSL4 Insertion Loss Values ...................................... 22
Table 11. Single Span and First Segment of Repeatered Loop .... 22
Table 12. Second or Third Segment of Repeatered Loop............. 22
Table 13. Troubleshooting Guide ................................................. 23
Table 14. HDSL4 T200 H4TU-R Specifications.......................... 24
Table A-1. HDSL4 Loopback Control Codes............................ A-2
Table A-2. Loopback Control Codes......................................... A-3
Section 61223424L2-5A
Issue 1, December 2003
CLEI Code: T1L497PC_ _
1223424L2
LOCAL
DSL 1
DSL 2
DS1
ALM
SF
ESF/
(YEL)
(GRN)
B8ZS
/
AMI
(GRN)
(YEL)
LLB
/
RLB
(GRN)
(YEL)
LOC
LBK
REM
TX
TX
M
O
N
RX
R
R
S
2
3
2
1. GENERAL
Figure 1. ADTRAN HDSL4 T200 H4TU-R
The ADTRAN 4-wire T200 HDSL4 transceiver unit for
the remote end (H4TU-R), P/N 1223424L2, is a
network terminating unit used to deploy an HDSL4 T1
circuit using 4-wire metallic facilities. See Figure 1.
This version of the H4TU-R works with multiple list
versions of the HDSL4 transceiver unit for the central
Table 1. ADTRAN Unit Compatability
Unit Number Description
122x401L1 or L2 220 H4TU-C
office (H4TU-C) and repeater (H4R) as listed in
Tab l e 1 .
122x403L1 or L2 DDM+ H4TU-C
122x404L1 or L2 3192 H4TU-R
Revision History
This is the initial release of this document. Future
revisions to this document will be explained in this
subsection.
61223424L2-5A 1
Trademarks: Any brand names and product names included in this document are
trademarks, registered trademarks, or trade names of their respective holders.
118141xL1 Total Access H4TU-C
122x441L1 T200 H4R
122x445L1 239 H4R
NOTE: x = any generic release number
Description
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.
Compliance
Tab l e 3 shows the compliance codes for the T200
H4TU-R. This product is intended for installation in
equipment with a Type “B” or “E” enclosure.
This product meets all requirements of Bellcore GR1089-CORE (Class A2), ANSI T1.418-2002 and is
NRTL listed to the applicable UL standards.
The T200 H4TU-R can be used with any H4TU-C to
complete an HDSL4 circuit with up to two H4Rs. Local
power is provided through the enclosure.
NOTE
This unit is intended for Local Power Only. If
a span powered unit is needed, refer to P/N
122x426L2.
The H4TU-R is a T200 mechanics card which will fit
Type 200 or Type 400 mechanics enclosures, as listed
in Tab l e 2 . This table also provides reference information on the ADTRAN enclosures.
Table 2. H4TU-R Enclosure Compatibility
Part
Number
1242007Lx HR12 Metal
1242008L1 HR4 Installation/
1242034L2 T400 Single Mount
1242034L3 T400 Single-Mount
1245034L1
Description
Enclosure Remote
Shelf
Maintenance
(removable RJ-48
jacks)
High Voltage
Enclosure
2
T200 Dual-Mount
Installation/
Maintenance
1
Document
Number
61242007LX-5x
61242008L1-5
61242034L2-5
61242034L3-5
61245034L1-5
Table 3. Compliance Codes
Code Input Output
Power Code (PC) C C
Telecommunication Code (TC) X X
Installation Code (IC) A –
2. INSTALLATION
After unpacking the unit, inspect it for damage. If
damage is discovered, file a claim with the carrier, then
contact ADTRAN. Refer to the Warranty and Customer
Service section in this practice. The settings on the
H4TU-C are encoded and transmitted to the T200
H4TU-R once the circuit has achieved synchronization.
There are no switch settings on the T200 H4TU-R.
To install the T200 H4TU-R, perform the following
steps:
1. If present, remove the Access Module Blank from
the appropriate access module slot of the
enclosure.
2. Hold the T200 H4TU-R by the front panel while
supporting the bottom edge of the module.
3. Align the module edges to fit in the lower and
upper guide grooves for the module slot.
4. Slide the module into the slot. Simultaneous thumb
pressure at the top and at the bottom of the module
will ensure that the module is firmly seated against
the backplane of the enclosure.
WARNING
1 In all applications the H4TU-R must be installed in NEBS
compliant and UL listed enclosures to insure full compliance with this unit.
2 ADTRAN’s T200 Dual-Mount housing (P/N 1245034L1)
is required when using the T200 H4TU-R for HDSL Loop
Support System (H-LSS
2 Issue 1, December 2003 61223424L2-5A
TM
) protection circuits.
Up to –200 VDC may be present on telecommunications wiring. Ensure chassis ground is
properly connected.
Front Panel LED Indicators
X
There are seven front panel mounted status LED
indicators. Each indicator is described in Tab l e 4 .
Table 4. Front Panel LED Indicators
Front Panel Name Indication Description
1223424L2
LOCAL
DSL 1
DSL 2
DS1
ALM
ESF/
(YEL)
B8ZS
(YEL)
LLB
(YEL)
LOC
REM
TX
M
O
N
RX
R
S
2
3
2
SF
(GRN)
/
(GRN)
/
(GRN)
LBK
AMI
RLB
TX
R
DSL 1
DSL 2
DS1
ALM
ESF/SF
B8ZS/AMI
LLB/RLB
Green
DSL Loop 1 sync, no errors currently detected, and signal margin ≥3dB
Red No DSL Loop 1 sync, errors being detected, or signal margin <3dB
Green
DSL Loop 2 sync, no errors currently detected, and signal margin ≥3dB
Red No DSL Loop 2 sync, errors being detected, or signal margin <3dB
Green DS1 signal is present and no errors currently being detected
Red No DS1 signal or signal is present with errors
OFF No active alarm present
Red Loss of DS1 signal to the unit
Yellow Loss of DSX-1 signal to the H4TU-C
OFF Unit is provisioned for UNFRAMED data
Yellow Unit is provisioned for ESF data
Green Unit is provisioned for SF data
Yellow Unit is provisioned for B8ZS coded data
Green Unit is provisioned for AMI data
OFF Unit is NOT in loopback
Yellow Unit is in loopback (network and/or customer)
Green H4TU-C is in loopback toward this unit
61223424L2-5A Issue 1, December 2003 3
Remote Provisioning
There are no configuration switches for the T200
H4TU-R. Configuration is performed via software
discussed in the Control Port Operation section of this
The provisioning settings can be viewed and manipulated through management access via the front panel
RS-232 port. Tab l e 5 lists the available provisioning
options and their factory default settings.
practice.
Table 5. Provisioning Options
Provisioning Option Option Settings Default Settings
1. DSX-1 Line Build Out 0-133 ft., 133-266 ft., 266-399 ft.,
0 to 133 ft.
399-533 ft., 533-655 ft.
2. DSX-1/DS1 Line Code B8ZS, AMI B8ZS
3. DSX-1/DS1 Framing SF, ESF, Unframed, Auto ESF
4. Force Frame Conversion
1
Disabled, Enabled Disabled
5. Smartjack Loopback Disabled, Enabled Enabled
6. Loopback Time Out None, 120 Min 120 Minutes
7. Latching Loopback Mode
2
T1 (Disabled), FT1 (Enabled) T1 (Disabled)
8. DS1 Tx Level 0 dB, -7.5 dB, -15 dB 0 dB
9. Customer Loss Indicator
3
AIS, Loopback, AIS/CI AIS/CI
11. Performance Reporting Messages None, SPRM, NPRM, AUTO (both) AUTO
12. Loop Attenuation Alarm Threshold 0 (Disabled), 1-99 dB 34 dB
13. SNR Margin Alarm Threshold 0 (Disabled), 1-15 dB 04 dB
14. Remote Provisioning Disabled, Enabled Enabled
1
The forced frame format conversion (FFFC) mode sets the H2TU-C to ESF and the H2TU-R to SF. This mode should be used to force
SF (DS1 from customer) to ESF (DSX-1 to network) conversion in the absence of network-provided ESF framing.
2
Latching Loopback Mode
• T1 — When optioned for T1 mode, the unit does not respond to DDS Latching Loopback codes.
• FT1 — DDS Latching Loopback operation is supported. The H4TU-C and any H4R units which are in the HDSL circuit are treated
as identical Tandem Data ports and the HTU-R is treated as a different Tandem Data port.
NOTE: When operating in FT1 mode and during periods of T1 loss of signal, LOS, or T1 AIS from the customer CI, the HDSL
system will send in the network direction from the HTU-C a Fractional DS1 idle signal consisting of a repeating 7E (HEX) byte
payload within a framed/unframed T1 signal. In addition, when optioned for FT1 mode, the setting for Customer Loss Response is
ignored.
3
Customer Loss Indicator
• AIS — Send AIS to network upon T1 loss of signal or T1 AIS from customer.
• LPBK — HTU-R initiates a network loopback upon T1 loss of signal or T1 AIS from customer.
• AIS/CI — HTU-R sends customer disconnect indication upon loss of signal, loss of synchronization, or receipt of T1 AIS from
customer.
NOTE: The CI is generated by transmitting the framing received from the network while overwriting the payload with a repeating
pattern. For applications where the DS1 is Extended Superframe, the data link is overwritten with a Yellow Alarm that is interrupted
once every second by a 100 milli-second code burst of 7E (HEX).
4 Issue 1, December 2003 61223424L2-5A
3. CONNECTIONS
Chassis Ground
All connections of the T200 H4TU-R are made through
card edge connectors. Figure 2 gives the card edge pin
assignments for the T200 H4TU-R circuit pack.
1
2
3
4
DS1 TX Tip
5
6
HDSL4 Tip Loop 1
7
8
9
10
Chassis Ground
11
12
HDSL4 Ring Loop 1
13
14
DS1 TX Ring
15
16
–24 V/-48 V Return
17
18
19
20
21
22
23
24
25
26
Chassis Ground
27
28
29
30
31
32
33
34
–24 VDC/-48 VDC
35
36
37
38
39
40
HDSL4 Tip Loop 2
41
42
43
44
45
46
HDSL4 Ring Loop 2
47
48
DS1 RX Ring
49
50
51
52
53
54
DS1 RX Tip
55
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 the Installation section for details.
The H4TU-R provides a bidirectional loopback via the
loopback button on the front panel. Refer to the
H4TU-R Network Loopbacks and Customer Loopbacks
sections for more details.
DS1 MON Bantam Jacks
The MON jack provides a non intrusive 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.
NOTE
For the MON jacks, the TX and RX indications
relate to the direction of the signal to/from the
CPE.
H4TU-R
T
R
TX
RX
DS1
MON
CPE
DS1
INTERFACE
T1
R1
Figure 3. H4TU-R MON Diagram
Figure 2. H4TU-R Edge Connector Wiring
CAUTION
Ensure chassis ground is properly connected
for either standalone or shelf-mounted applications.
61223424L2-5A Issue 1, December 2003 5
H4TU-R Network Loopbacks
D
D
D
D
The loopback position is a logic loopback located
within the H4TU-R internal HDSL4 transceiver. See
Figure 4.
The H4TU-R responds to multiple loopback activation
processes:
• First, manual loopback on the H4TU-R and/or the
H4TU-C unit may be controlled from the front
panel. Refer to the Front Panel Operation section
of this practice for more detail.
H4TU-C Network-Side Loopback
DSX-1
H4TU-C
H4TU-R Network-Side Loopback and/or
H4TU-R NIU Loopback
DSX-1
H4TU-C
LOCAL
LOOP
LOCAL
LOOP
H4TU-R
H4TU-R
AIS
DS1
X
AIS
DS1
X
• Second, loopback activation may be accomplished
using the control port of the H4TU-R.
• Third, the H4TU-R will respond to the industry
standard HDSL loopback codes as designated in the
ANSI document T1E1.4/92. These are described in
Appendix A, HDSL4 Loopbacks.
• Fourth, the H4TU-R responds to T1 Network Interface Unit (NIU) loopback codes as described in
H4TU-R Customer-Side Loopback
X
DSX-1
AIS
H4TU-C
H4TU-C Customer-Side Loopback
X
DSX-1
AIS
H4TU-C
LOCAL
LOOP
LOCAL
LOOP
DS1
H4TU-R
DS1
H4TU-R
Bellcore TR-TSY-000312, as follows:
In-Band Codes
Loop up 11000 (2 in 5)
Loop down 11100 (3 in 5)
ESF Codes
Loop up 1111 1111 0100 1000 (FF 48)
Loop down 1111 1111 0010 0100 (FF 24)
H4R Network-Side Loopback
H4TU-C
H4R Customer-Side Loopback
X
DSX-1
H4TU-C H4TU-RH4R
AIS
H4R
H4TU-R
AIS
DS1DSX-1
X
DS1
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
H4R1 Network-Side Loopback
SX-1
H4TU-C H4TU-RH4R1 H4R2
H4R1 Customer-Side Loopback
X
SX-1
H4TU-C H4TU-RH4R1 H4R2
AIS
AIS
DS1
X
DS1
before the H4TU-R can respond to the NIU
loopback.
The H4TU-R will respond to the loopback codes by
activating the NIU loopback from either the disarmed or
armed state. The loop down codes will return the
H4TU-R to the disarmed or de-activated state
depending upon the code utilized.
H4R2 Network-Side Loopback
SX-1
H4TU-C H4TU-RH4R1 H4R2
H4R2 Customer-Side Loopback
X
SX-1
H4TU-C H4TU-RH4R1 H4R2
AIS
X = Signal Inactive
AIS
DS1
X
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
DS1
Customer Side Loopbacks are illustrated in Figure 4.
NOTE
Network and customer loopbacks are governed
Figure 4. HDSL4 Loopbacks
by the loopback time out option (Default=120
minutes).
6 Issue 1, December 2003 61223424L2-5A
5. FRONT PANEL OPERATION
)
)
d)
The front panel contains two pushbuttons. These are
labeled
The
LOC and REM.
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.
REM pushbutton controls a bidirectional loopback
The
at the H4TU-C. Pressing the button causes a loopback
toward the H4TU-R and network 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.
1
6
7
8
9
TXD (Transmit Data
2
3
RXD (Receive Data
4
5
SGN (Signal Groun
NOTE
If a personal computer with terminal emulation
capability is being used, 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.
Operation
The screens illustrated in the following section apply to
an HDSL4 circuit deployed with the ADTRAN HDSL4
technology. The circuit includes an H4TU-C, up to two
H4Rs and an H4TU-R. Other configurations are
possible (such as use of another vendor's equipment)
and their displays will vary slightly from those shown in
this section.
A terminal session is initiated by entering multiple
spacebar 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 5. RS-232 (DB-9) Connector Pinout
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.
61223424L2-5A Issue 1, December 2003 7
This ADTRAN HDSL4 Main Menu provides access to
detailed performance and configuration information.
The OAM&P (Operation, Administration, Maintenance, and Provisioning) screens are available as listed
on the
Main Menu (Figure 6). To access a particular
menu item, press the number associated with that item,
and press
ENTER.
Circuit ID: 10/01/03 09:29:45
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. Clear PM and Alarm Histories
12. Troubleshooting
13. Virtual Terminal Control
The HDSL4
Unit Information Screen (Figure 7)
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.
Selection:
Figure 6. HDSL4 Main Menu
Circuit ID: 10/01/03 09:29:45
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: 800.726.8663 / 888.873.HDSL Fax: 256.963.6217 Internet: www.adtran.com
--------------------------------------------------------------------------------
ADTN H4TU-C ADTN H4TU-R
P/N: 1223403L2 P/N: 1223424L2
S/N: 123456789 S/N: 123456789
CLEI: T1L7PODAAA CLEI: T1L497PCAA
Manf: 01/01/2000 Manf: 01/01/2000
Ver: A00 Ver: A01
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
Ver: A01 Ver: A01
Figure 7. Unit Information Screen
8 Issue 1, December 2003 61223424L2-5A