PairGain 150-1141-05, Руководство пользователя, Страница: 32 / 78

Provisioning 150-388-105-05, Revision 05
24 March 25, 2000 HLU-388 List 5
AMI Places both the HLU and HRU into their AMI modes.
Framing FRMG AUTO Configures the HiGain system to operate in an auto-framing (AUTO) mode in
which it continuously searches the input T1 bit stream for a valid SF or ESF
frame pattern. This feature is required for fractional T1 applications (DS0
blocking) where it insures proper channel time slot alignment. While the
HiGain system can also process unframed data in this AUTO mode, it is
recommended that the unframed (UNFR) mode be used for all unframed
applications. Using the AUTO mode for unframed applications runs the risk of
detecting pseudovalid frame sequences, which can affect the data integrity.
UNFR Configures the HiGain system to operate in an unframed mode. This mode
disables the auto framing process and forces the HiGain system to function as
a transparent bit pipe.
AIS on HDSL LOSW
(See “HAIS Option”
on page 27 .)
HAIS 2LP Causes the HiGain system to transmit the AIS signal at both the HLU-388 and
HRU T1 output ports when both of the HDSL loops are not in sync (LOSW).
1LP Causes the HiGain system to transmit the AIS signal at both the HLU-388 and
HRU T1 output ports when either of the two HDSL loops is not in sync (LOSW)
or if a Margin alarm occurs.
AIS on SMJK/NREM SAIS ENA Causes the HRU to transmit the AIS signal towards the Customer Interface
(CI) when in NREM or SmartJack loopback.
DIS Causes the HRU to either transmit the signal from the network towards the CI
RCV port or to open and terminate its RCV CI port when an HRU NREM or
SmartJack loopback is executed. The AIS signal is not sent (towards the CI).
DS0 Blocking
(See “DS0 Blocking
Option” on page 26 .)
DS0 BLK The DS0 blocking option can only be set through a maintenance terminal
connected to the craft port. The four-character front-panel display only shows
the status of the blocking option. BLK indicates at least one channel is
blocked.
NONE Indicates no channels are blocked.
Margin Alarm
Threshold
(See “Margin Alarm
Threshold Option”
on page 27
.)
MARG 0 to 15 dB The Margin Alarm Threshold can only be set through a maintenance terminal
connected to the craft port. It determines the minimum allowable margin
below which a system alarm can occur. Zero disables the alarm.
4dB Default value.
RLOS Alarm RDA ENA Enables a remote DS1 LOS condition at the input to the HRU 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 HRU from causing
an LOS alarm. The front-panel Status LED still flashes red and the ALRM
RLOS message is displayed, but the alarm relay contacts do not close and
LOS is sent towards the network from the HLU instead of AIS.
Alarm Pattern ALMP AIS Enables HiGain to output an AIS payload at its T1 ports for LOSW, T1 LOS,
and Margin alarms.
LOS Enables HiGain to output an LOS condition at its T1 ports for LOSW, T1 LOS,
and Margin alarms.
Bipolar Violation
Transparency
(See “BPVT Option”
on page 25 .)
BPVT ENA Enables BPVs and HDSL CRC errors at the T1 input to be converted into T1
BPVs at the distant end’s T1 output. This makes HiGain transparent to BPVs.
DIS Disables BPVT.
Confirm Settings CONF YES Confirms that all operating modes are to be updated to their current
selections.
NO Prevents the most recently selected operating mode selections from being
updated. They remain as they were before the system option settings mode
was entered.
Table 9. HLU-388 List 5 System Settings (Cont.)
System Settings
Screen Options
Front-panel
Display
Code
Parameter Description