Nortel Networks DCT1900 - Manual (Page 387)

Technical Product Manual - DCT1900
Maintenance, Fault Finding Procedures
Maint-DCT1900/R8/mw 6-5
© 2000-2005
B
Fault 37?
Check air interface
sync provider
Out of order
or reset?
Check sync input
cable connection at
CPU and SDB.
Connection
correct?
No
No
Yes
CPU
Yes
No multiframe
synchronization
y
Error in MS/PBX Digital
Trunk Controller
y Excessive noise on
trunk cabling
System is not synchronized
and when the air interface
sync provider is up and
running:
y
Wait until
synchronization is
acheived (might take a
while) or
y Force synchronization
by system reset
(ongoing calls are
dropped)
y Sync input cable
connection
y SDB
Fault 41
Yes
No