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DEFINITY Enterprise Communications Server Release 5
Maintenance and Test for R5vs/si
555-230-123
Issue 1
April 1997
Maintenance Object Repair Procedures
Page 10-1063PI-LINK (Processor Interface Link)
10
TDM Loop Around Test (#183)
This test is destructive.
This test requires that you enter the busyout link lnk-no command before
running the test. This means that the DCS, AUDIX, or ISDN link, for example, are
torn down. This test checks the health of the TN754 or TN784 DIG-LINE or the
TN722 or TN767 DS1 Interface circuit pack. This depends on which circuit pack
is used on the link. The TN754 or TN784 Digital Line or DS1 Interface circuit pack
is put into loop around mode while the PI-BD is instructed to go into remote loop
around. If this test fails, and the previous Test #182 passes, then the TN754 or
TN784 Digital Line or the DS1 Interface circuit pack should be replaced. It is not
run on ports administered as EIA.
12 FAIL PI-BD reported that Loop Around Test failed.
1. Retry the test.
2. If it continues to fail, try resetting the circuit pack by the test interface
PCS long command. This TEARS down all other links on this circuit
pack (DCS, AUDIX, ISDN, etc.).
3. If the problem still exists, replace the TN765 circuit pack.
PASS The on-board Loop Around Test on the TN765 circuit pack passed. Most of
the hardware on the circuit pack was tested except for the TDM Bus
buffers. If problem is isolated to TN765 and this test passes, then replace
TN765 circuit pack since TDM Bus buffers could be at fault.
13 ABORT The TN765 circuit pack has not been reset yet or is currently being reset.
1. Retry the command at 1-minute intervals a maximum of 5 times.
2. If test continues to abort with error code 13, then check status of all
BX.25 and/or ISDN-PRI links on this TN765 via the status link lnk-no
command. If all links are not in-service, then reset the TN765 using the
test interface PCS long command.
3. If the TN765 fails to reset, refer to the PI-SCI section of this manual.
4. Retry the test link lnk-no command.
5. If the test still aborts with error code 13 or from step 2, and some links
are in-service and an error code is still present, escalate the problem.
Table 10-305. TEST #182 Processor Interface Loop Around Test — Continued
Error
Code
Test
Result Description/Recommendation
Continued on next page