Panasonic KX-TDA600 - Hybrid IP PBX Control Unit Max. 1008 Ports Installation Manual page 8

Precaution
8 Installation Manual
WARNING
DO NOT
SD MEMORY
WHILE POWER
SUPPLIED
H Y B R I D
Doing so may cause the Hybrid IP-PBX
to fail to start when you try to restart
the system.
REMOVE
CARD
IS
TO THE
. I P - P B X