Panasonic KX-TDA600 - Hybrid IP PBX Control Unit Max. 1008 Ports Installation Manual page 27

1.2 System Construction
4-shelf System (Side-by-side Type)
When vertical space is limited, it is possible to install a fully expanded system (Basic Shelf + Expansion
Shelf 1, and Expansion Shelf 2 + Expansion Shelf 3 ) in a side-by-side configuration. Expansion Shelf 1 is
mounted on the Basic Shelf, and Expansion Shelf 3 is mounted on Expansion Shelf 2. Installing the system
using base stands (supplied with an optional Mounting Kit) makes it easy to reinstall shelves in a different
place.
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