DEFINITY ECS Release 8.2 Maintenance for R8.2csi
555-233-119 Issue 1
April 2000
Maintenance Objects
3-906PKT-INT (Packet Interface)
3
Private Looparound Tests (#885)
This test requests the Packet Interface to exec ute its two private looparound
tests:
■Level 2 looparound
■Broadcast path loop around
These tests verify the health of the Packet Interface’s translation RAM, inward and
outward bound data paths, parity indic ations and CRC calculations, the Leve l 2
processing firmware, and the C-LAN’s Bus Bridge op eration, including C-LAN
TDM Bus and Packet Bus acc ess.
■Level 2 (LAPD) Link Looparound
LAPD is a link level protocol that is used for a ll system links. This test
verifies the health of the processing of these links.
■Broadcast Link Looparound
Each ISDN BRI port has two associated broadc ast signaling links, one for
call control and one for maint enance and management. Since these links
have separate routing circ uitry from the Level 2 Looparound, this test
forces a CRC error to verify the CRC hardware associated with the
broadcast data p ath.
These tests are also run as part of the reset tests, and the PKT-INT firmware
automatically executes them p eriodically in the ba ckground. If the Level 2
looparound test fails as a bac kground test, a

fatal error

message will be sent to
the Packet Interface maintenance so ftware and the Packet Interface will b e put in
1793 FAIL The Flash memory checksum test failed. The Packet Interface may still be
operational but it will fail if a reset is executed.
1. Retry the command.
2. If the same error code occurs, replace the TN798 Processor circuit pack
at a time that would cause the least disruption of service. The Packet
Interface is still functional but should be replaced since it may not
operate after a system reboot and it will enter a fatal fault state if it is reset
for other reasons.
PASS The Packet Interface’s firmware is in a proper state. If problems are still
reported on the Packet Int erface, check fo r errors on the Private Looparound
test (#885) and Maintenance Looparound Test (#886).
Table 3-388. TEST #884 Memory Checksum Test — Continued
Error
Code
Test
Result Description/ Recommendation
Continued on next page