DEFINITY Enterprise Communications Server Release 7
Maintenance for R7r
555-230-126 Issue 4
June 1999
Maintenance Object Repair Procedures

9-816EXP-INTF (Expansion Interface Circuit Pack)

9
Expansion Interface Lightwave Transceiver Looparound Test (#242)
This test is destructive.
1 or 2 FAIL The test tone was detected correctly in one direction, but not the opposite
direction.
1. Test for the Active Tone-Clocks on the PNs for which the defec tive EI board
provides a link. This determines if the dial tone is supplied.
2. Perform the ‘‘Fiber Fault Isolation Procedure’’ in Chapter 5, ‘‘Alarms, Errors,
and Troubleshooting’’.
Center Stage: These failure codes are possible on a Center Stage Switch
configuration only when there is just one other PN available for looping back the
test tone.
1. Perform the ‘‘Fiber Fault Isolation Procedure’’ in Chapter 5, ‘‘Alarms, Errors,
and Troubleshooting’’.
3 or 4 FAIL The failure codes only apply to a system equipped with a Center Stage Switch.
They indicate that the test aborted or failed for the first connection from the EI
board under test to another EPN, and that the test tone was detected correctly
in one direction, but not the opposite direction when the connection was
between the EI board under test and a different EPN than was used in the first
connection.
1. Run the test for the Active Ton e-Clocks on the P Ns for which the defective EI
board provides a link. This determines if the dial tone is being supplied.
2. Perform the ‘‘Fiber Fault Isolation Procedure’’ in Chapter 5, ‘‘Alarms, Errors,
and Troubleshooting’’.
PASS The tone was successfully tran smitted in both direct ions. Both EI boards, Switch
Node Interface boards, DS1 CONV circuit packs, and their lightwave
transceivers are functi oning properly.
0NO
BOARD No board was detected by the test.
1. Check the error log for wrong board (error 125) or no board (error 131).
Resolve either of these issues, if applicable.
2. Check that the board is properly translated and inserted. If so, check for
hyperactivity (error 1538). If hyperactive, use the reset board UUCSS
command.
3. Run the test again. If it fails, the ID chip on board may be bad. Replace the
board and retest.
Table 9-311. TEST #241 Expansion Interface 2-way Transmission Test — Continued
Error
Code Test
Result Description/ Recommendation
Continued on next page