Panasonic KX-TDE600 Installation Manual page 241

PROBLEM
Extensions connected to an
Expansion Shelf do not
send a dial tone.
PROBABLE CAUSE
•
Bus Cable is not
connected properly.
•
Optional service card
malfunction: BUS-S
•
Defective Bus Cable
(included with BUS-M
card or BUS-ME card).
SOLUTION
•
Connect the Bus Cables properly.
•
Replace the corresponding shelf
expansion card.
•
Replace the corresponding Bus Cable.
5.1.1 Installation
Installation Manual 241