NEC ElectraElite 48 System Hardware Manual page 243

Issue 6
Lamp Off
Lamp On indications are shown below.
On
Off
On
Off
On
Off
On
Off
On
Off
5 - 106
Table 5-52 ZT Status Table for LEDs 5 and 6
Line is not Connected
No Flicker (ZT is in standby)
Flash cycle is 0.1 seconds (Not Supported)
Flash cycle is 0.2 seconds. Remaining indications depend on the
number of PS connections.
1 PS connection
2 PS connections
3 PS Connections (ZT is busy)
Lamp
Time (0.2s)
Lamp
Time (0.2s)
Lamp
Time (0.2s)
Lamp Lamp
Time (0.2s)
Lamp
Time (0.2s)
Installing Electronic Telephone Units
Electra Elite