DEFINITY Enterprise Communications Server Release 7
Maintenance for R7r
555-230-126
Issue 4
June 1999
Maintenance Object Repair Procedures
9-990MAINT (EPN Maintenance Circuit Pack)
9
Serial Channel Local Looparound Test (#229)
This test checks TN775B on-board circuitry associated with the serial links to the
Expansion Interface circuit packs. A request is sent to the EPN Maintenance
circuit pack over the Active link via the Active Expansion Interface circuit pack
serial interface circuitry to test the serial interface circuitry of the standby
Expansion Interface circuit pack link. If a response is received, then by definition
the serial interface circuitry associated with the Active link is good.
The EPN Maintenance circuit pack has 3 separate serial interfaces:
■ One to the management terminal which is tested by Test #228
■ One to the active EI circuit pack which is tested by Test #229
■ One to the standby EI circuit pack which is tested by Test #229
Table 9-380. TEST #229 Serial Channel Local Looparound Test
Error
Code
Tes t
Result Description/ Recommendation
1000 ABORT System resources required to run this test are not available.
2000 ABORT Response to the test request was not received within the allowable time
period.
2033 ABORT Internal system error.
1. Retry the command at one-minute intervals a maximum of 5 times.
2034 ABORT Background EPN Maintenance circuit pack maintenance is running the Serial
Channel Local Looparound Test.
1. Wait 30 seconds, and retry the test a maximum of 5 times.
22901 ABORT Test disabled via software patch.
Continued on next page
