Panasonic KX-TD500 Installation Manual page 21

1.2 System Construction
Construction of Expansion Shelf (1 and 2)
System Expansion
The KX-TD500 system's capacity can be expanded by installing up to two Expansion Shelves
on the Basic Shelf.
Fully expanded system (Basic Shelf + Expansion Shelf 1 + Expansion Shelf 2) is called "3-
Shelf System".
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P F F F F
O S S S S
W 1 2 3 4
E
R
F F F F F F F
S S S S S S S
5 6 7 8 9 10 11
F F F
S S S
12 13 14
Figure 3:
System Outline