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DEFINITY Enterprise Communications Server Release 6
Maintenance for R6vs/si
555-230-127
Issue 1
August 1997
Maintenance Object Repair Procedures
Page 10-963PI-LINK (Processor Interface Link)
10
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).
Processor Interface Loop Around Test (#182)
This test is destructive.
The Processor Interface Loop Around Test is an on-board Loop Around Test. The
test requires that the system technician issue a busyout link lnk-no command
before this test is run. This means that the DCS, AUDIX, or ISDN link, for
example, is torn down. It does not access the TDM Bus at all. When the circuit
pack is put into local loop around mode, frames are looped internally on the
circuit pack. If the test fails, the Processor Interface circuit pack reports the
failure. It is a good check of most of the working hardware on the Processor
Interface circuit pack.
1. D = Destructive; ND = Nondestructive
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.
Order of Investigation
Short Test
Sequence
Long Test
Sequence D/ND
1
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
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