NEC UNIVERGE SV9100 System Maintenance Manual page 30

Issue 1.0
Bridge on
system CO
line?
No
Move suspected bad line to good
GCD-4COTA port. Move good line to
original
GCD-4COTA port.
Port
Reset or replace G CD-
4COTA and test again.
Yes
Problem
solved?
No
1. Perform Second Initialization, and test.
2.
Perform First Initialization, and test with default
program.
3. Replace GCD-CP10.
18
Yes
Remove it.
Line
Problem
on port or
line?
Check line with dB meter
and/or contact Telco.
Done.
F1
Low Volume Problems
No
All lines?
Run a dB level test at DMARK on lines
with 1 kHz test tone. No less than -8dB
at MDF is required.
Less than
-8 dB?
No
Replace GCD-4COTA.
UNIVERGE SV9100
Yes
Yes
All stations?
Yes
Report Problem to
Telco.
System Maintenance
No
Replace Multiline
SLT.