Backup Master Mode And Isolated Mode - Panasonic KX-NS1000 Manual

4.2.3 One-look Networking Survivability

4.2.3.1 Backup Master Mode and Isolated Mode

Description
In a One-look network, if the Master unit fails or otherwise goes offline, a Slave unit that is designated as the
Backup Master unit assumes operation as the Master unit.
If the Backup Master unit also goes offline or none is specified, Slave units can switch to Isolated mode.
Backup Master Mode
When the Master unit goes offline, the Slave units will detect the change in status. The designated Slave unit
will switch to Backup Master mode, and the other Slave units will use the Backup Master unit as the Master
unit.
Normal Operation
Master Unit
PBX
PBX
SIP trunks can be configured to switch their operation to the Backup Master unit.
ITSP
SIP Trunk
PBX
Master Unit
364 Feature Guide
Slave Unit
(Backup Master Unit)
PBX
PBX
PBX
Slave Unit 1
(Backup Master Unit)
Backup Master Operation
Master Unit
PBX
PBX
ITSP
Offline
PBX
Master Unit Slave Unit 1
(Backup Master Unit)
Slave Unit
(Backup Master Unit)
PBX
Offline
PBX
: Current Connection
: Lost Connection
SIP Trunk
PBX