DEFINITY Enterprise Communications Server Release 7
Maintenance for R7r
555-230-126 Issue 4
June 1999
Maintenance Object Repair Procedures
9-986MAINT (EPN Maintenance Circuit Pack)
9
d. The serial link between the Expansion Interface c ircuit pack in the B
carrier and the EPN Maintenance circ uit pack is defec tive.
System Technician-Demanded T ests: Descripti ons
and Error Codes
Always investigate tests in the order p resented in the table below when
inspecting errors in the sys tem. By clearing error cod es associated with the

Sanity Handshake Test,

for example, you may also clear errors g enerated from
other tests in the testing sequenc e.
Sanity Handshake Test (#106)
This test checks the EPN Maintenance circuit p ack’s ability to respond to
queries. A message is sent to the EPN Maintenance c ircuit pack which the n
sends a message bac k. If the response message is rece ived, then the EPN
Maintenance circuit p ack is queried for the EPN cabinet typ e (valid EPN cabinet
types are single carrier and multicarrier cab inets). The EPN Maintenance circuit
pack reads pins on the backplane of c arrier A that identify the type of ca binet
and report this information. If a valid cabinet type is retur ned, then the test
passes.
Order of Investigation Short Test
Sequence Long Test
Sequence D/ND1
1. D = Destructive, ND = Non-d estructive
Sanity Handshake Test (#106) X X ND
EPN Maintenance Circuit Pack Reset Test (#306) X D
Serial Channel Local Looparound Test (#229) X X ND
MGR I Channel Local Looparound Test (#228) X D
EPN Maintenance Circuit Pack Sanity Maze Test (#303) X X ND
EPN Maintenance Circuit Pack Serial Link Test (#337) X X ND
Table 9-378. TEST #106 Sanity Handshake Test
Error
Code Test
Result Description/ Recommendation
ABORT Internal system error.
1000 ABORT System resources require d for this test are not availab le.
2000 ABORT Response to cabinet query was not received in the allowable time period.
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