Panasonic KX-TDE600 Installation Manual page 109

3.2.8 Wall Mounting (KX-TDE600/KX-TDE620)
Connecting Shelves
For a multiple shelf system, you need to install an optional BUS-M card and BUS-ME card(s) in the Basic Shelf.
To connect the shelves, plug the Bus Cables (supplied with the BUS-M card or BUS-ME card) into the slots
of the BUS-M card. Then, plug the other end of each Bus Cable into the BUS-S card built in to each Expansion
Shelf.
For a 2-shelf System (Basic Shelf + 1 Expansion Shelf)
It is necessary to install an optional BUS-M card in the Basic Shelf.
For how to connect the shelves, refer to "Connecting Shelves" in "3.2.5 Installation of Basic System or 2-shelf
System (Floor Standing)".
For a 3- or 4- shelf System (Basic Shelf + 2 or 3 Expansion Shelves)
It is necessary to install an optional BUS-M card in the Basic Shelf, and mount 1 BUS-ME card (for a 3-shelf
system), or 2 BUS-ME cards (for a 4-shelf system) on the BUS-M card.
For how to connect the shelves, refer to "Connecting Shelves" in "3.2.6 Installation of 3- or 4-shelf System
(Tower Type)".
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