December 22, 1997
Section 150-219-100-02
HDU-217/219 and
HCC-239 List
1
Page 1
PRODUCT OVERVIEW
Description and Features
This product incorporates static sensitive
components. Proper electrostatic discharge
procedures must be followed.
The PairGain
®
HiGain
®
Models HDU-217 List 1 and HDU-219 List 1
are low power single-pair doubler units in mini-repeater packages.
Each extends the range of a HiGain repeaterless fractional T1
transmission system.
HDU-217 and HDU-219 HiGain Mini Doubler features include
(Figure1):
Front-panel LED status display
Lightning and power cross-protection on both HDSL interface
ports
Remote power capability from the HDU-D41 (HiGain Doubler
Unit D41) List 2D and the EPH-220 (EtherPhone
™
220) and
MM-220 (Megabit Modem
™
220) line units
Low-power dissipation
Figure 1. HDU-217 and HDU-219 List 1 Front Panels