Maintenance Object Repair Procedures
555-233-123
10-1240 Issue 4 May 2002
System Technician-Demanded Tests: Descriptions
and Error Codes
Always investigate tests in the order presented in the table below when inspecting
errors in the system. By clearing error codes associated with the PI Loop Around
Test, for example, you may also clear errors generated from other tests in the
testing sequence. REMINDER: The command line entry to test the PI-LINK MO is:
test link lnk-no (s or l).
Order of Investigation
Short Test
Sequence
Long Test
Sequence
D/
ND
1
1 D = Destructive; ND = Nondestructive
Processor Interface Loop Around Test (#182) X D
TDM Loop Around Test (#183) X D
ISDN Hardware Test (#234) X ND
Link Quality Test (#233) X X ND
Data Module Internal Loop Around Test (#175)
2
2 If the PI-LINK under test is BX.25 and if there is an MPDM or an MTDM as part of the
link, then the PI-LINK test sequence is expanded to include the tests on the data
module. These tests are run via the PDMODULE or TDMODULE maintenance object.
Refer to the PDMODULE TDMODULE (Data Module) Maintenance documentation for
descriptions and details of these tests.
XND
Digital Line NPE Crosstalk Test (#9)
2
XND
Port Circuit Information Channel and Control
Channel Loop Around Test (#13)
2
XND
Data Module Audits Test (#17)
2
XXND
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