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).
Table 4 | LED Indicators |
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| Use | Your Station | Other Station (Red) | |
| Interval Rates | |||
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CO |
| 2 seconds ON, 1/8 second | steady | |
(access outside line) | OFF— 1/8 second ON/OFF | |||
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Incoming Call | 1 second ON at 10 pulses/ | one second ON/OFF | ||
(while ringing) | second— 1 second OFF | |||
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Hold (outside line) | 4 pulses/second for 1/8 |
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If using Pooled Line, the hold indication is only | 1/2 second ON/OFF | |||
second ON/OFF | ||||
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at the station that places the call on hold. |
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Hold – Consultation |
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(during consultation/transfer to another | 10 pulses/second | steady | ||
station) |
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Hold – Exclusive (outside line) | 10 pulses/second | steady | ||
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Hold – Recall | 1 second at 2 pulses/ |
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second, 1 second at 10 | flashes | |||
(when held call recalls your idle station) | ||||
pulses/second |
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| 1 second at 2 pulses/ |
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Hold – Exclusive Recall | second, 1 second at 10 | steady | ||
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| pulses/second |
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Internal Call | Your [DN] flashes 10 |
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pulses/second— 1 second |
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(while station ringing) |
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OFF |
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Busy Station Transfer | 4 pulses/second, 1/8 | 3/4 second ON, 1/8 | ||
(outside call transferred to your busy station | ||||
second ON/OFF | second OFF | |||
from a designated station or AA) | ||||
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After disconnecting first call... |
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10 pulses/second | 2 pulses/second | |||
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Alert Signal | .5 seconds | 4 seconds | ||
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Conference | 10 pulses/second | steady | ||
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10 | Strata DK Electronic Telephone 5/00 |
