Overview
150-231-165-01, Revision 01
2
September 22, 1998
HLU-231 List 6E
In general, HiGain systems:
•
operate with any number of other T1, POTS, Digital Data Service (DDS) or other HiGain systems sharing the
same cable binder group
•
can be used with customers requiring DS1 service on a temporary or permanent basis
•
provide a means of quickly deploying service in advance of fiber-optic transmission systems.
With a HiGain system, service can be provided within hours. Fiber-optic systems can be installed incrementally
and cut-over from the installed HiGain system when convenient to do so.
Applications without HiGain Doublers
This section addresses HLU-231 List 6E operation when used without doublers. For applications without
doublers, the HLU-231 is directly connected to the HRU by the two HDSL cable pairs. The HLU-231 is
compatible with all HiGain HRUs.
Applications with HiGain Doublers
For doubler applications, one or two doublers may be used in the HDSL loops between the HLU and HRU. If the
HRU is locally powered, the HLU can power up to two doublers for a total of three spans.
Table 1.
HDSL Loss Over Cables
Cable Gauge
Loop Loss at 196 kHz
(dB/kft)
Loop Resistance
(
Ω
per kft)
26 AWG/0.4 mm
3.88
83
24 AWG/0.51mm
2.84
52
22 AWG/0.61mm
2.18
32
19 AWG/0.91mm
1.54
16
For compatibility guidelines on mixing newer doublers with older HRU and HLU models, refer
to