ADC HiGain H2TU-C-231 User Manual page 27

LTPH-UM-1109-01, Issue 1
Table 6. H2TU-C-231 List 2 ADC Config Menu Options (Continued)
Front Panel
ADC Config Menu
Display
Options
Code
DS1 BER DBER
Threshold
See "DS1 BER
(DBER) Option"
on page 21.
HDSL2 BER HBER
Threshold
See "HDSL2 BER
Threshold (HBER)
Option" on
page 21 and
"System Alarm
Output Pins" on
page 58.
Special Loopback SPLB
Mode
SmartJack LPBK
Loopback
Minor Alarm ALM
Remote RDA
Disconnect Alarm
DS1 Line Coding (DS1) Option. The DS1 line code option should always be set to conform to the type of
DS1 service (AMI or B8ZS) being provided by the HiGain HDSL2 system. The Auto mode, which can adapt to
either AMI or B8ZS, should only be used in applications that require it (such as when HiGain HDSL2 acts as a
standby circuit to DS1 circuits whose line codes are not known or may be both AMI and B8ZS). This is because
the Auto mode induces one BPV in the DS1 bit stream whenever it switches from AMI to B8ZS. The Auto mode
allows both the H2TU-C and the H2TU-R to set its DS1 output code to that which is being received at the distant
end DS1 input. This forces the input and the output codes in each direction of transmission to be identical.
H2TU-C-231 List 2
Selection Description
ENA Enables the fixed 24-hour DS1 BER threshold.
DIS Prevents the generation of a system alarm due to DS1 BER.
1E-6 System alarm relay contact closes and the Status LED flashes red when the
Block Error Rate exceeds 10
1E-7 System alarm relay contact closes and the Status LED flashes red when BER
exceeds 10
NONE Prevents generation of a system alarm due to BER.
GNLB Configures the HiGain HDSL2 system to respond to the generic inband
loopback codes.
A1LB and Configures the HiGain HDSL2 system to respond to the inband loopback
A2LB codes of the Westell addressable repeater.
A3LB Configures the HiGain HDSL2 system to respond to the inband loopback
codes of the Wescom addressable repeater.
A4LB Configures the HiGain HDSL2 system to respond to the inband loopback
codes of the Wescom Mod 1 addressable repeater.
A5LB Configures the HiGain HDSL2 system to respond to the inband loopback
codes of the Westell Mod 1 addressable repeater.
ENA Enables the HiGain HDSL2 system to recognize all inband SmartJack (SMJK)
loopback commands.
DIS Configures the HiGain HDSL2 system to ignore all inband SmartJack
loopback commands.
ENA Enables the generation of the output alarm on pins 20 and 21 when a system
alarm condition occurs.
DIS Disables the generation of the output alarm on pins 20 and 21 when a system
alarm condition occurs.
ENA Enables a remote DS1 LOS condition at the input to the H2TU-R to generate
an LOS alarm. AIS or LOS (depending on ALMP) is sent towards the network.
DIS Prevents a remote DS1 LOS condition at the input to the H2TU-R from
causing an LOS alarm. The front-panel Status LED still flashes red and the
ALRM RLOS message displays, but the alarm relay contacts do not close and
LOS is sent towards the network from the H2TU-C instead of AIS.
January 9, 2002
-6
.
-7
.
Provisioning
19