PairGain 150-1504-14, Быстрое руководство по установке, Страница: 12 / 20

Section 350- 431 - 114 -01 Revision 01
Page 10 HLU- 431 List 1D
FRMG AUTO* Configures HiGain 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 HiGain can also process unframed data in
this AUTO mode, it is recommended that the UNFR mode be used
for all unframed applications. Using the AUTO mode for unframed
applications runs the risk of detecting "pseudo valid" frame
sequences, which can affect the data integrity.
UNFR Configures HiGain to operate in an unframed mode. This mode
disables the auto framing process and forces HiGain to function as
a transparent bit pipe.
HAIS 2LP* Causes HiGain to transmit the AIS signal at both the HLU and HRU
T1 output ports when
both of the HDSL loops are not in sync
(LOSW).
1LP Causes HiGain to transmit the AIS signal at both the HLU and HRU
T1 output ports when
either of the two HDSL loops is not in sync
(LOSW) or if a minor alarm occurs.
SAIS ENA* Causes the HRU to transmit the AIS signal towards the CI when in
NREM loopback.
DIS Prevents the AIS signal from being transmitted to the NI and
replaces it with the network test signal in the HRU List 6 and 8 or
by a quiet termination (LOS) in the HRU List 7.
MARG 0 to 15
dB The Margin Alarm Threshold determines the minimum allowable
margin below which an alarm will occur.
4* Default value.
CONF YES Confirms that all operating modes (listed in this table) 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
options settings mode was entered.
HLU- 431 List 1D System Options (Cont.)
Mode Selection Description