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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 10-621EXP-INTF (Expansion Interface Circuit Pack)
10
Expansion Interface Local Loop Around Test
(#240)
This test is similar to the Lightwave Transceiver Loop Around Test described in
Test #242. A test tone from TDM Bus A is received by the Expansion Interface
circuit pack under test, but is not transmitted out to the lightwave transceiver
before being looped back onto TDM Bus A again. The test is then repeated using
TDM Bus B. Thus, this loop back test is performed on each TDM Bus on the
network containing the Expansion Interface circuit pack to verify that the
Expansion Interface circuit pack is able to loop back data on each TDM Bus.
Since this loop back is internal to the circuit pack, this test does not interfere with
the normal fiber data stream.
Table 10-211. TEST #240 EI Local Loop Around Test
Error
Code
Test
Result Description/Recommendation
ABORT Internal system error
1. Retry the command at 1-minute intervals a maximum of 5 times.
1 ABORT Could not allocate time slot on TDM Bus A. Loop back passed on TDM Bus B.
2 ABORT Could not allocate time slot on TDM Bus B. Loop back passed on TDM Bus A.
1. If there is no reason to doubt that the Expansion Interface circuit pack
can transfer data to or from a TDM Bus, then since the test passed on
one bus, assume that the test passes on the other bus as well.
2. If EXP-INTF circuit pack Error Types 1, 2, 1537, or 1793 are present in the
Error Log and/or if Expansion Interface circuit pack Tests #240, #241, or
#242 have failed previously, there is reason to doubt that the Expansion
Interface circuit pack can transfer data to or from a TDM Bus. To
determine if the test can pass on both TDM Buses, perform the following
procedure: For Error Code 1, issue the set tdm PC command, where P is
the network containing the Expansion Interface circuit pack being tested
and C is the TDM Bus A. Execute the test board PCSS command again.
If this test passes or aborts with Error Code 2, this test is considered to
have passed. For Error Code 2, issue the set tdm PC command, where P
is the network containing the Expansion Interface circuit pack being
tested and C is the TDM Bus B. Execute the test board PCSS again. If
this test passes or aborts with error code 1, this test is considered to have
passed.
3. If this test continues aborting with the same error after setting the TDM
Bus as indicated in Step 2, rerun the test at 1-minute intervals a maximum
of 5 times. Apply the passing criteria for Step 2 to each result.
4. If the test still does not pass on the other TDM Bus, follow the procedure
for abort error code 3.
Continued on next page