Loopback Testing - ADC HiGain H2TU-R-402 List 6 Quick Installation

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
6 front panel. Connect the other end of the cable to the serial port on the maintenance
terminal.
2 Configure the maintenance terminal to the communications settings shown in the
illustration above.
3 Start a terminal emulation program such as Procomm (emulating a VT100 terminal).
4 If necessary, press
5 Type the first letter of the desired menu. Use the
selections, and 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 and circuit and device identifications.
I
Remote log on can be performed from the H2TU-R or H2TU-C. To log off the remote
logon
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, refer to the technical practice
for the H2TU-C. It can be downloaded from the ADC web site at
www.ADC.com.
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 push buttons
• Maintenance Terminal
• Test Set
Loopback Inband Code
NLOC 1111000
NREM 1110000
SMJK 11000
CREM 1111110
CLOC 1111100
Loopdown 11100
+ t
o refresh the HiGain HDSL2 logon screen.
R
CTRL
to change a setting or display a menu.
ENTER
. "Rlogout" changes to "Rlogon."
R
T
ESTING
NLOC CREM
H2TU-C
Network
Table 2. GNLB Loopback Commands
Description
DSX-1 signal is looped back to the network at the H2TU-C.
DSX-1 signal is looped back to the network at the H2TU-R.
DSX-1 signal is looped back to the network at the H2TU-R SmartJack module.
Signal from customer is looped back to the customer at the H2TU-C.
Signal from customer is looped back to the customer at the H2TU-R.
Deactivates any of the above loopbacks.
SPACEBAR
NREM
SMJK CLOC
TLOS
H2TU-R
Customer
Premises
to cycle through menu
Activate loopback using
one of the following:
• Maintenance Terminal
• Test Set
• H2TU-R LBK push
Button