Revision 01
March 14, 1997
950-770-100
Page 6
PairGain Engineering-Plant Series
PG-Plus PRL-770
5.2
Disable the line power.
To disable the line power, use a test lead with two clips to short the
HDSL Tip and Ring conductors:
1
Attach one test-lead clip to the Tip conductor.
2
Attach the second test-lead clip to the Ring conductor.
This ensures that the potential difference between Tip and Ring is zero. The PRL-770 and the
PLL-721 COLU go to the metallic fallback to POTS state, and remain in metallic fallback until
the short is removed. Once the PLL-721 COLU senses the short (or off hook) condition has
been removed, it initiates a power up sequence to start the PRL-770.
5.3
Install the PRL-770 RT Enclosure.
Use the two #10 x 1.5" wood screws and flat washers
provided in the PRL-770 Mounting Kit to attach the PRL-770 RT enclosure to the side of the
customer residence (see Figure 4). For installation on stucco or other suitable surface, use the two
PairGain provided #10 x 1" anchor nuts.
Install the PRL-770 RT enclosure only as shown in Figure 4, with all access
openings facing down. Otherwise, possibly damaging materials (such as fluids)
can enter the PRL-770 RT enclosure.
Figure 4. Installing the PRL-770 List 1A RT Enclosure
Summary of Contents for PRL-770
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