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LTPH-UM-1109-01, Issue 1 Provisioning
H2TU-C-231 List 2 January 9, 2002 17
Table 5 describes the Standard Config menu options and Table 6 on page 18 describes the ADC Config menu
options. Selections in bold type indicate factory default settings.
Table 5. H2TU-C-231 List 2 Standard Config Menu Options
Standard Config
Menu Options
Front-Panel
Display
Code
Selection Description
Loopback
Timeout
LBTO NONE Disables automatic time-out cancellation of all loopbacks.
20 Sets automatic cancellation of all loopbacks to 20 minutes after initiation.
60 Sets automatic cancellation of all loopbacks to 60 minutes after initiation.
120 Sets automatic cancellation of all loopbacks to 120 minutes after initiation.
8 hr Sets automatic cancellation of all loopbacks to 8 hours after initiation.
24 hr Sets automatic cancellation of all loopbacks to 24 hours after initiation.
Loop Attenuation
Threshold
LATT 0 through
40 dB
Determines the maximum loop attenuation before an alarm is declared. The
loop attenuation threshold can only be set through the maintenance screens.
Zero disables the alarm.
35 dB Default value.
Margin Threshold MARG 0 to 15 dB Determines the minimum allowable margin below which a system alarm can
occur. The Margin (Alarm) Threshold can only be set through the
maintenance screens. Zero disables the alarm.
4 dB Default value.
DS1 Frame
Formatting
FRMG AUTO Configures the HiGain HDSL2 system to operate in an auto-framing (AUTO)
mode in which it continuously searches the input DS1 bit stream for a valid
SF or ESF frame pattern. Both line and path performance parameters are
maintained. Unframed payloads will cause the ES-P and SES-P counters to
increment.
SF Configures the HiGain HDSL2 system to search for the SF framing pattern at
its DS1 input.
ESF Configures the HiGain HDSL2 system to search for the ESF framing pattern at
its DS1 input.
UNFR Configures the HiGain HDSL2 system to operate in an unframed mode. This
mode disables the auto framing process and forces the system to function as
a transparent bit pipe. Only line parameters are considered when monitoring
DS1 performance.
DS1 Line Coding
See “DS1 Line
Coding (DS1)
Option” on
page 19.
DS1 AUTO The H2TU-C-231 and H2TU-R monitor the incoming DS1 bit streams for the
B8ZS code. If the H2TU-R detects this code, the H2TU-C enters B8ZS output
mode. The H2TU-C reverts back to AMI output mode if no B8ZS codes are
received at the H2TU-R input for 5 seconds. Similarly, when the H2TU-C
detects the B8ZS code, the H2TU-R enters B8ZS mode and returns to AMI
mode if no B8ZS code is received at the H2TU-C input for 5 seconds.
B8ZS Places both the H2TU-C-231 and H2TU-R into B8ZS mode.
AMI Places both the H2TU-C-231 and H2TU-R into AMI mode.
H2TU-C
Equalization
See “H2TU-C
Equalization
(EQL) Option.” on
page 20.)
EQL EXT Disables the H2TU-C internal equalizer, allowing connection of external
equalizer hardware.
0 Sets the Equalizer to DSX-1 for 0 to 132 feet.
133 Sets the Equalizer to DSX-1 for 133 to 265 feet.
266 Sets the Equalizer to DSX-1 for 266 to 398 feet.
399 Sets the Equalizer to DSX-1 for 399 to 532 feet.
533 Sets the Equalizer to DSX-1 for 533 to 655 feet.
Continued