Nortel Networks DCT1900 - Manual (Page 385)

Technical Product Manual - DCT1900
Maintenance, Fault Finding Procedures
Maint-DCT1900/R8/mw 6-3
© 2000-2005
GENERAL ALARM
System Manager -
Control - Service
Fault 8, 35, 36,
37, or 41?
No Replace indicated board
Fault 8?
Yes
No
Yes
Check availability
of indicated Base
Station in System
Manager - Control -
System
Base Station
available?
Yes
Connection between
the indicated CLU/
SLU and Base
Station has been
broken for a short
time
No
A
BC and L1
and L2 of DTU
available?
Check availability
of indicated DTU
board in System
Manager - Control -
System
Fault 35?
No
Yes Yes
No
Check the DTU to
MS/PBX/Centrex
Cabling.
Connection between
the indicated DTU
and Mobility Server/
PBX has been
broken for a short
time
Cabling
correct?
No
DTU cabling to Mobility
Server/PBX
Yes
y DTU
y Error in Mobility
Server
y PBX
Fault 36?
No
B
Yes
Error in Mobility
Server/PBX
Digital Trunk
controller