Panasonic KX-TD816E, Installation Manual

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Installation 2-25
2.4 Optional Cards and Units Installation
2.4.1 Location of Optional Cards and Units
The location of the optional cards and units is shown below.
Precaution To protect the printed circuit boards (P-boards) from static electricity, do
not touch parts on the P-boards in the main unit and on the optional cards
and units.
Panasonic
D816
8EXT
DIGITAL SUPER HYBRID SYSTEM
4CO
DIGITAL SUPER HYBRID SYSTEM
ISDN
DIGITAL SUPER HYBRID SYSTEM
2SO
Expansion
area 2
Expansion
area 1
Expansion Unit
Connectors
Remove the cover
plate(s) on the front
cover.
Expansion Units
KX-TD816 Either 4-CO Line Unit (KX-TD180) or 2-ISDN S0 Line Unit (KX-
TD280) and a 8-Station Line Unit (KX-TD170) can be installed in
any expansion area.
8-Station Line
Units,
KX-TD170:
Each unit adds
eight extensions.
4-CO Line Unit,
KX-TD180:
Adds four CO
lines.
2-ISDN S0
Line Unit,
KX-TD280:
Adds two ISDN
S0 lines.