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Card-edge connector
56
55
Tip
54
53
52
51
50
49
Ring
48
47
46
45
44
43
42
41
40
39
38
Factory use only
37
Factory use only
36
35
34
33
32
31
30
29
28
27
Chassis Ground*
26
25
24
23
22
21
Factory use only
20
19
18
17
Circuit Ground
16
15
Ring1
14
13
Ring
12
11
10
9
8
7
Tip
6
5
Tip1
4
3
2
1
Chassis Ground*
Active pins are highlighted in black.
* Chassis Ground may be tied to Earth Ground according
to local practice.
V
ERIFICATION
Once the H2TU-R-402 is installed, verify that it is operating properly by monitoring the
Status LEDs on the front panel.
Status LED Descriptions
LED Status
Indicates
Alarm (ALM) LED
Shows alarm states for remote and local Loss of Signal (LOS).
Solid red Indicates a Loss of Signal (LOS) condition at the T1 input of the H2TU-R-402.
Blinking Indicates an LOS condition at the T1 input of the H2TU-C line unit.
HDSL2 LED
Displays HDSL2 Loop condition.
Solid green Indicates HDSL2 loop is in sync.
Blinking once
Indicates the HDSL2 loop is trying to acquire sync.
per second
Blinking 4 times
Indicates a margin alarm condition on the HDSL2 loop.
per second
Blinking 10 times
Indicates a Cyclic Redundancy Check (CRC) error on the HDSL2 loop.
per second
OFF Indicates no activity on the HDSL2 loop.
Indicates framing patterns. If DS1 signals are not detected, the ESF and SF LEDs
DS1 Framing (FRM)
LEDs (ESF and SF)
will not light.
ESF LED = Solid green Indicates Extended Super Frame (ESF). The LED blinks once per second when a
frame error occurs.
SF LED = Solid green Indicates Super Frame (SF). The LED blinks once per second when a frame error
occurs.
OFF Indicates unframed or no signal.
DS1 Code LEDs (B8ZS
Indicates DS1 code options. If DS1 signals are not detected, the ESF, SF, B8ZS,
and AMI)
and AMI LEDs will not light.
B8ZS LED = Solid
Indicates that the DS1 line code option is set to Bipolar with 8-Zero Substitution
green
(B8ZS). The LED blinks once per second when a string of excessive zeros is
detected.
AMI LED = Solid green Indicates that the user DS1 line code option is set to Alternate Mark Inversion
(AMI). This LED blinks once per second when a Bipolar Violation (BPV) is detected.
Shows loopback states to and from the network and to and from the Customer
Loopback (LBK) LED
Interface (CI).
Solid yellow Indicates Network Remote (NREM) loopback, SmartJack (SMJK) loopback, or
Transmit Loss of Signal (TLOS) loopback.
Blinking once
Indicates Customer Local Loopback (CLOC) loopback state.
per second
Blinking 4 times per
Indicates the H2TU-R is in an Armed state.
second
L
OGGING ON TO THE
The H2TU-R-402 supports local and remote logon through a maintenance terminal
(VT-100 or a PC running VT-100 terminal emulation software) connected to the craft port
on the H2TU-R-402 front panel.
The H2TU-R-402 accesses menus and screens that are replications of those viewed at the
H2TU-C. You can also view system settings and inventory, initiate loopbacks, monitor
performance, and configure the circuit.
Monitor
Performance
Event Log
Config
+------------------------------------------+
|
|
ADC DSL Systems, Inc.
|
HiGain HDSL2
|
|
Voice:
|
Fax
+------------------------------------------+
ID: xxxx--xxxx--xxxx—-xxxx
02/01/2001 12:30:01
Alarm LED
DS1 IN
HDSL2 LED
DS1 framing LEDs
DS1 line code LEDs
Loopback LED
HDSL2
DS1 OUT
Span
CLEI/ECI bar code label
Configuration number label
(Inside handle)
M
M
AIN
ENU
Inventory
Report
Rlogon
Help
|
|
|
|
800.638.0031
|
:
714.832.9924
|
H2TU-C
System:
OK___
HiGain
HDSL2
List number
Indicates the list number of the H2TU-R-402.
L
5E
H
2
ALM
T
U
LOOP
*
R
4
0
ESF
2
SF
B8ZS
Loopback control button
AMI
LBK
Press the button for 5 seconds to activate a loopback
D
towards the network and the customer (NREM and CLOC).
S
1
Any existing loopback is terminated before these loopbacks
are activated.
The unit can be looped down by either
pressing the LBK control button again for 5 seconds, by
the standard loopdown inband messages, or by the
maintenence terminal.
DS1 transmit (IN) and receive (OUT)
IN
bridging jacks
BRG
OUT
Provides non-intrusive bridging jack access to (IN) and
from (OUT) the HDSL2 span at the DS1 interface.
Allows monitoring of the T1 payloads.
RS-232
DCE
Craft port provisioning
To access all system maintenance, provisioning
and performance screens, connect a standard
9-pin terminal cable between the serial port on a
PC and the H2TU-R craft port.
Extraction handle
Use to remove the H2TU-R-402 from
its slot.
To connect to a maintenance terminal:
1
Connect a standard 9-pin serial cable to the RS-232 craft port on the H2TU-R-402 List
5E front panel.
2
Connect the other end of the cable to the serial port on the maintenance terminal.
3
Start a terminal emulation program such as Procomm (emulating a VT100 terminal).
4
Configure the maintenance terminal to the following comunications settings:
•
9600 baud
•
No parity
•
8 data bits
•
1 stop bit
•
Hardware flow control to OFF
5
If necessary, press
Type the first letter To view:
onitor
Monitors loopbacks and alarms, and provides a graphical representation of circuit
M
activity, including ES, UAS, SES, and line code.
erformance
Performance and alarm histories for current, 25-hour, 48-hour, or 31-day periods for
P
either the DS1 or HDSL2 interface.
vent Log
Identifies the 100 most recent system events and reports the date and time of
E
occurrence.
onfig
Standard configuration options, ADC options, date and time setting, and a reset option.
C
nventory
Product information about the various devices that are in the system and lists circuit
I
and device identifications.
logon
Remote log on can be performed from the H2TU-R or H2TU-C. To log off the remote
R
unit, press
elp
Glossary, a list of navigational keys, and ADC contact information.
H
Initial provisioning of the HiGain HDSL2 system is performed at the
H2TU-C line unit. For more information about the HiGain screens,
provisioning, and troubleshooting, contact Customer Service to
obtain a copy of the applicable technical practice.
L
OOPBACK
Initiate loopback testing from the maintenance terminal menus or by using inband codes.
The inband codes shown below can be sent by a test set. For more information, refer to the
technical practice for the H2TU-C line unit.
Activate loopback using
one of the following:
• H2TU-C MODE and
SEL pushbuttons
• Maintenance Terminal
NLOC
• Test Set
Network
Name
Description
NLOC
H2TU-C loopup from NI
CREM
H2TU-C loopup from CI
NREM
H2TU-R-402 loopup from NI
CLOC
H2TU-R402 loopup from CI
(a) The leftmost bit arrives first in all sequences. The detection algorithm functions reliably
-3
with a random 10
Bit Error Ratio (BER) on the facility.
Maintenance Terminal Modem Settings
9600 baud
8 data bits
No parity
1 stop bit
Hardware flow control: OFF
Terminal emulation: VT-100
+
t
o refresh to HiGain HDSL2 logon screen.
R
CTRL
. "Rlogout" changes to "Rlogon."
R
T
ESTING
NREM
SMJK
CLOC
CREM
TLOS
H2TU-R
H2TU-C
Customer
Premises
A3LB Loopback Commands
(a)
Binary Code
(Hexadecimal Equivalent)
1111-1111-0001-1110 (FF1E)
0011-1111-0001-1110 (3F1E)
1111-1111-0000-0010 (FF02)
0011-1111-0000-0010 (3F02)
Activate loopback using
one of the following:
• Maintenance Terminal
• Test Set
•
H2TU-R
LBK
pushbutton
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