Electra Elite
Issue 6
System Hardware Manual
10 - 11
See if problem is
on all lines.
Calls
dropped on
all lines?
Call Dropping
All
lines drop
together?
Check DC voltages
with a meter and AC
power with a line
disturbance analyzer.
Check outside line key
indication after call drops.
Have Telco check line circuits.
Increase Automatic Release
Signal Detection Time. Refer
to Memory Block 3-40.
CO
Line Key
LED Status
?
Check COI(8)-U( ) LED.
Return defective ETU
for repair.
Problem
Solved?
Perform First Initialization.
Replace B48-U10 KSU,
and test system using
default program.
1. Perform Second Initialization.
If trouble persists go to step 2.
2. Replace COI(8)-U( ) ETU. Test.
Have Telco check
Line circuit(s).
COI(8)-U( )
LED Status
?
No
No
No
On
Off
Yes
Yes
Yes
On
Off
C2
Summary of Contents for ElectraElite 48
Page 2: ...SYSTEM HARDWARE MANUAL Stock Number 750376 Issue 6 Series 8000 48 ...
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Page 9: ...THIS PAGE INTENTIONALLY LEFT BLANK ...
Page 10: ...Regulatory Information ...
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Page 51: ...Issue 6 Electra Elite xxxii List of Figures THIS PAGE INTENTIONALLY LEFT BLANK ...
Page 56: ...1st Tab Chapter 1 Introduction ...
Page 57: ......
Page 78: ...2nd Tab Chapter 2 System Specifications ...
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Page 102: ...3rd Tab Chapter 3 Hardware Requirements ...
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Page 110: ...4th Tab Chapter 4 Installing the KSU ...
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Page 135: ...Issue 6 Electra Elite 4 24 Installing the KSU THIS PAGE INTENTIONALLY LEFT BLANK ...
Page 136: ...5th Tab Chapter 5 Installing Electronic Telephone Units ...
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Page 256: ...6th Tab Chapter 6 Installing Electra Elite Multiline Terminals ...
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Page 290: ...7th Tab Chapter 7 Installing Optional Equipment ...
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Page 344: ...8th Tab Chapter 8 Installing Dterm Series i Equipment ...
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Page 358: ...Electra Elite Issue 6 System Hardware Manual 8 13 Figure 8 15 Removing the Line Panel ...
Page 396: ...9th Tab Chapter 9 Installing Electra Professional Equipment ...
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Page 404: ...10th Tab Chapter 10 System Maintenance ...
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Page 428: ...11th Tab Appendices ...
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Page 433: ...Issue 6 Electra Elite A 4 Glossary of Abbreviations THIS PAGE INTENTIONALLY LEFT BLANK ...
Page 434: ...SYSTEM HARDWARE MANUAL NEC America Inc Issue 6 Series 8000 48 ...
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