Revision
01
March 17, 1998
350-611-103-01
10
PairGain
Engineering - Plant Series
HLU-611
List
3
ESAL
17
Closes the alarm relay contacts across pins 20 and 21 and
flashes the red STATUS LED when 17 ES (17 HDSL CRC errors
on either HDSL loop or a total of 17 BPVs) occur within a 24-
hour period.
170
Closes the alarm relay contacts across pins 20 and 21 and
flashes the red STATUS LED when 170 ES (170 HDSL CRC
errors on either HDSL loop or a total of 170 BPVs) occur within
a 24-hour period.
NONE*
Prevents generation of an alarm due to excessive Errored
Seconds.
SPLB
GNLB
Configures the HiGain system to respond to the generic (3/4/
5/6 in 7) in-band loopback codes.
A1LB and
A2LB*
Configures the HiGain system to respond to the Teltrend
addressable repeater in-band loopback codes.
A3LB
Configures the HiGain system to respond to the Wescom
addressable repeater in-band loopback codes.
A4LB
Configures the HiGain system to respond to the Wescom Mod
1 addressable repeater in-band loopback codes.
A5LB
Configures the HiGain system to respond to the Teltrend Mod
1 addressable repeater in-band loopback codes.
PWRF
DIS
Disables powering to the HRU-612 over the HDSL pairs.
ENA*
Enables powering to the HRU-612 over the HDSL pairs.
LNCD#
B8ZS
Places both the HLU and HRU into their B8ZS modes.
AMI*
Places both the HLU and HRU into their AMI modes.
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 Superframe or Extended Superframe 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 òpseudo validó frame sequences,
which can affect the data integrity.
HLU-611 List 3 System Options
(Continued)
Mode
Selection
Description