The two LEDs on the front of the Base indicate its status, as below:
PRO
7
HEADSET SYSTEM
POWER LED
STATUS LED
Booting up
Base is master and ready
Base is slave and ready
Synchronization signal
receiving OK
Active call or calls on this
Base
BOTH LEDs FLASHING
CORRECTIVE ACTION
Power too low to boot up
Check the individual power supplies
on the network for possible failure; or
being switched off; or consider adding
an extra power supply to the network
Base in registration mode
The system will time-out of this mode in
10 minutes but you can press the
registration switch to exit the
registration mode manually