Notice
Only one Backup master site can exist in a One-look network.
Master Unit
Slave Unit
(Backup
Master Unit)
Slave UnitSlave Unit
ITSP
Master Unit
Slave Unit
(Backup
Master Unit)
Slave UnitSlave Unit
Fault
ITSP
One-look Network
One-look Network
Notice
All Slave units will restart. Depending on the makeup of the network, it may take 15 minutes or more for
the system to become fully operational in Backup Master mode.
LED Indication
Operating
Status
Master Unit
Slave Unit
(Backup Master Unit)
Slave Unit
STATUS
LED
MASTER
LED
STATUS
LED
MASTER
LED
STATUS
LED
MASTER
LED
Normal Green ON Green ON Green ON Amber ON Green ON Amber ON
After a Fault
at the Master
Site
- -
Green ON Green
Flashing
Green ON Amber ON
For more information about LED indications, refer to "LED Indications" in "4.3.1 Mother Board".
Similarly, when you press the System Alarm button set for the flexible button on the PT, a message that
indicates the PBX status has changed will be displayed on the LCD on the PT.
For details, refer to "5.6.4 Local Alarm Information" in the Feature Guide.
Backup Master Mode Setup Procedure
Specifying a Backup master site
To
use Backup master mode, you have to specify a site in the One-look network as a Backup master site.
Only a Slave site that is in the INS or FAULT state can be specified as the Backup master site.
The Backup master site is set using Web Maintenance Console.
Procedure
1. On the Home screen, click
.
2. Select the desired site in Backup Master.
Installation Manual 363
8.4.2 One-look Networking Survivability
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