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 attemp ts to clear the packet b us fault by
replacing all the bus ca bling and terminators within a port-network. Part 2
attempts to isolate the fault to a partic ular carrier by extending the packet bus
from the control carrier to add itional carriers one at a time.
Part 1:
1. Power down the port network.
2. Replace all of the TDM/LAN Cable Assembli es and both TDM/LAN
Terminators.
3. Restore power to the port network.
4. Determine if the packet b us fault is still present.
5. If the packet bus fault is resolv ed, the procedure is c ompleted. 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