Hardware manual

Issue 8 Electra Elite
5 - 72 Installing Electronic Telephone Units
5.1.4 LED Indications
5.1.5 Connectors
This ETU has three connectors:
J1 Connects to the backboard
J2 Not currently used
J3 9-pin RS-232C connector for maintenance
Table 5-30 CNF(8)-U( ) ETU LED Indications
LED Description On Flashing Off
STATUS ETU status Operation
stopped
(Power On)
Normal
Operation
No Power
CH 0 Status Busy Not Used Idle
CH 1 Status Busy Not Used Idle
CH 2 Status Busy Not Used Idle
CH 3 Status Busy Not Used Idle
CH 4 Status Busy Not Used Idle
CH 5 Status Busy Not Used Idle
CH 6 Status Busy Not Used Idle
CH 7 Status Busy Not Used Idle