Panasonic Pure IP-PBX KX-TDE600 Installation Manual page 101

Installing Expansion Shelves 2 and 3
Repeat the procedure in "Installing the Basic Shelf and Expansion Shelf 1" for Expansion Shelves 2 and 3.
Expansion Shelves 2 and 3 must be connected to the Basic Shelf using Bus Cables. Therefore, make sure
that Expansion Shelves 2 and 3 are installed so that the Bus Cables can reach the Basic Shelf.
Basic Shelf and Expansion Shelf 1
Shelf installation is complete. Next, it is necessary to connect the shelves.
Document Version 2009-12
3.2.7 Installation of 4-shelf System (Side-by-side Type)
Expansion Shelves 2 and 3
Installation Manual 101