The Grand Tour
Electronic Telephone Diagram
LED Indicators
Each line and feature button has a LED next to it which indicates the status of the line
or feature associated with the button. Line LEDs light and/or flash at varying rates to
indicate call status (see
Table 4
LED Indicators
CO In-Use
(access outside line)
Incoming Call
(while ringing)
Hold (outside line)
If using Pooled Line, the hold indication is only
at the station that places the call on hold.
Hold – Consultation
(during consultation/transfer to another
station)
Hold – Exclusive (outside line)
Hold – Recall
(when held call recalls your idle station)
Hold – Exclusive Recall
Internal Call
(while station ringing)
Busy Station Transfer
(outside call transferred to your busy station
from a designated station or AA)
After disconnecting first call...
Alert Signal
Conference
10
Table
4).
Use
Your Station
Interval Rates
2 seconds ON, 1/8 second
OFF— 1/8 second ON/OFF
1 second ON at 10 pulses/
second—1 second OFF
4 pulses/second for 1/8
second ON/OFF
10 pulses/second
10 pulses/second
1 second at 2 pulses/
second, 1 second at 10
pulses/second
1 second at 2 pulses/
second, 1 second at 10
pulses/second
Your [DN] flashes 10
pulses/second—1 second
OFF
4 pulses/second, 1/8
second ON/OFF
10 pulses/second
.5 seconds
10 pulses/second
Strata DK Electronic Telephone 5/00
Other Station (Red)
steady
one second ON/OFF
1/2 second ON/OFF
steady
steady
flashes
steady
3/4 second ON, 1/8
second OFF
2 pulses/second
4 seconds
steady