User manual

DEFINITY ECS Release 8.2 Maintenance for R8.2csi 555-233-119 Issue 1
April 2000
Maintenance Objects
3-908PKT-INT (Packet Interface)
3
Maintenance Looparound Test (#886)
This test checks whether the Packet Interface can send and receive data
correctly. It establishes a LAPD link from a Packet Interface back to the same
Packet Interface and transmits and receives test data over that testing link. While
timing signals from the Packet Bus are used for the data transfer, the data itself is
looped around on the TN799 C-LAN circuit pack’s Bus Bridge at the interface to
the Packet Bus and does not get sent over the Packet Bus.
This test is run only
on the second instance of Packet Interface on the TN798 Processor, since the
first instance cannot use the Packet Bus.
1 FAIL The Private Link Broadcast looparound test failed. The Packet Interface will
enter a fatal fault state when this occurs and the Packet Interface
Maintenance software should put the Packet Interface in a out-of-service
state. Therefore by the time further action is taken, it is expected that the test
will abort with ABORT code 1137 and a demand reset should be used to
test the Packet Interface.
1. Reset the Packet Interface using the reset packet-interface AS
command. Refer to the repair procedures for the Packet Interface Reset
Test (#889) for further action.
2. If the test continues to fail, replace the TN798 Processor circuit pack.
2 FAIL The Private Level 2 looparound test failed. The Packet Interface will enter a
fatal fault state when this occurs and the Packet Interface Maintenance
software should put the Packet Interface in a out-of-service state. Therefore
by the time further action is taken, it is expected that the test will abort with
ABORT code 1137 and a demand reset should be used to test the circuit
pack.
1. Reset the Packet Interface using the reset packet-interface AS
command. Refer to the repair procedures for the Packet Interface Reset
Test (#889) for further action.
2. If the test continues to fail, replace the TN798 Processor circuit pack.
PASS All the private looparound tests passed. The Packet Interface is functioning
properly. If the system is still unable to place calls, then:
1. Display the error log (display errors) and check for errors on the
Packet Bus and Maintenance/Test circuit pack. Clear those errors first.
2. Check all other circuit packs connected to the Packet Bus. Packet Bus
failures are likely to be caused by a faulty circuit pack connected to the
backplane or bent pins on the back plane. Refer to the PKT-BUS
maintenance documentation for repair procedures.
Table 3-389. TEST #885 Private Looparound Tests — Continued
Error
Code
Te st
Result Description/ Recommendation
Continued on next page