350-431-116-01, Revision 01
Product Overview
HLU-431 List 1F
January 8, 1999
1
P
RODUCT
O
VERVIEW
The PairGain
®
HiGain
®
Line Unit Model HLU-
431
List
1F
is the Central
Office (CO) side of a repeaterless T1 transmission system and is used in
conjunction with the HiGain Remote Unit (HRU) to provide a complete
HiGain High-bit-rate Digital Subscriber Line (HDSL) system.
This guide addresses HLU-431 List 1F operation when used with and without
doublers. For applications without doublers, the HLU-431 List 1F is directly
connected to the HRU by the two cable pairs. For doubler applications, one
doubler may be used in the HDSL loops between the HLU-431 List 1F and
the HRU.
shows the front panel of the HLU-431 List
identifies front panel features.
F
EATURES
•
784 kbps full duplex 2BIQ HDSL transmission on two pairs
•
Selectable DS-1 pre-equalizer
•
Front panel HDSL S/N margin display
•
Front panel status LED
•
Selectable loopback voltage
•
RS-232 Craft port
•
Low voltage (140V) doubler application
•
Shelf management interface
C
OMPATIBILITY
The HLU-431 mounts in the HiGain Remote Enclosure (HRE) or HiGain
Universal Enclosure (HUE) shelves listed below. The HLU-
431
slot pins are
.
•
HRE-420, Single-slot indoor
•
HRE-422, Dual-slot indoor
Содержание HLU-431
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