DEFINITY Enterprise Communications Server Release 7
Maintenance for R7r
555-230-126
Issue 4
June 1999
Alarms, Errors, and Troubleshooting
5-108Packet Bus Fault Isolation and Repair
5
Figure 5-47. Carrier Rewiring Example—Rear View of Multicarrier Cabinet
Procedure 4 consists of two parts. Part 1 attempts to clear the packet bus fault by
replacing all the bus cabling and terminators within a port-network. Part 2
attempts to isolate the fault to a particular carrier by extending the packet bus
from the control carrier to additional carriers one at a time.
Part 1:
1. Power down the port network.
2. Replace all of the TDM/LAN Cable Assemblies and both TDM/LAN
Terminators.
3. Restore power to the port network.
4. Determine if the packet bus fault is still present.
5. If the packet bus fault is resolved, the procedure is completed. Otherwise,
go to Part 2.
TDM/LAN Bus Cable TDM/LAN Bus Terminator
Normally
Configured
Cabinet
(All 5 Carriers
Used)
Bus Shortened
to Carrier A Only
(Control Carrier)
Shortened Bus
Extended to
Include
A and B
Carriers
Carrier D
Carrier E
Fans
Carrier A
Carrier B
Carrier C
