Overview; Features - PairGain HLU-231 Manual
Line unit
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Also See for HLU-231:
- Manual (78 pages) ,
- Quick installation manual (20 pages) ,
- Manual (42 pages)
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150-231-175-01, Revision 01
O
VERVIEW
®
The PairGain
HiGain
system. When used in conjunction with a remote unit or HRU, the system provides 1.544 Mbps transmission on
two unconditioned copper pairs over the full Carrier Service Area (CSA) range. This line unit can be used in
applications with or without HDUs.
The CSA includes loops up to 12,000 feet of 24 AWG or 9,000 feet of 26 AWG wire, including bridged taps. The
HiGain system uses HDSL transmission technology as recommended by Bellcore TA-TSY-001210. The HiGain
system complies with GR-63 CORE, TR-TSY-000499 and GR1089 CORE.
F
EATURES
•
Selectable DSX-1 Pre-equalizer
•
140 V to 200 V self-adjusting line voltage for HRU and HDU-451 applications
•
Front Panel HDSL S/N Margin Display
•
Selectable Loopback activation codes
•
RS-232 maintenance port
•
Front-panel user option setup
•
Front Panel DSX-1 splitting & bridging access
•
Lightning and power cross protection on HDSL interfaces
•
kbps full-duplex 2B1Q HDSL Transmission on two pairs
•
Front panel status indicating LED
•
Automatic front-panel display blanking
•
Margin threshold alarm
•
HAIS & SAIS options
•
Easy default setting of user options
•
New T1 transceiver chip
•
Circuit ID option
•
Network management ready
•
Single board design
•
Can line power 3 spans (2 doublers and 1 remote).
HLU-231 List 7E
®
HLU-231 List 7E is the Central Office (CO) side of a repeaterless, T1 transmission
September 23, 1998
Overview
1
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