Product manual

Maintenance, Fault finding procedures
Technical Product Manual - DCT1800-GAP
TD 92093 (1/LZBNB 103 108 R4D) / 2006-03-09/ Ver.C
© 2006
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System manager -
Control - Service
Connection between
the indicated DTU
and PBX has been
broken for a short
time
GENERAL ALARM
Fault 8, 35, 36
or 37?
Replace indicated board
Fault 8?
N
Fault 35?
N
Fault 36?
N
Y
Y
Error in PBX digital
trunk controller
Connection between
the indicated
CLU/CLU-S/SLU and
BS has been broken
for a short time
Check availability of
indicated base station
in System manager -
Control - System
Y
Base station
available?
N
Y
Check availability of
indicated DTU board in
System manager -
Control - System
BC and
L1 and L2 of DTU
available ?
N
Y
N
Y
N
DTU cabling to PBX
Check the DTU to
PBX cabling.
Cabling correct?
Y
- DTU
- Error in PBX
A
005
Fault 37
- Error in PBX digital trunk
controller
- Excessive noise on trunk
cabling