Avaya S8700 Series, Maintenance Manual

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EXP-INTF (Expansion Interface Circuit Pack)
Issue 1 May 2002 8-797 555-233-143
Expansion Interface Lightwave Transceiver
Loop-Around Test (#242)
This test is destructive.
This test requires that the EI circuit pack first be busied out. If the system has a
duplicated Port Network Connectivity, this test cannot be run on an EI circuit pack
that resides on the current active PNC due to restrictions that prohibit the
busying-out of certain components that are part of the active PNC. If this test is
run on an EI circuit pack that is part of the standby PNC, this test is not destructive
and no service outages will take place.
In a system without duplicated Port Network Connectivity, where this EI circuit
supports an IPSI to PN link, this test will disrupt service to one or more PN’s. If
the EI circuit pack is part of an PN-to-PN link in a Direct Connect system, service
between the two PNs will be disrupted.
This is a 2-part connectivity test. In the first part of the test, a digital count is
transmitted from the cabinet of the EI circuit pack under test, through the EI circuit
pack under test, out to its lightwave transceiver. The connection then loops back
into the lightwave transceiver through the same EI circuit pack again and into the
originating cabinet. If the test tone is detected by a tone detector, the first part of
the test passes. The path used for this part of the test is represented in
Figure
8-41 on page 8-798 .
PASS The tone was successfully transmitted in both directions. Both EI boards, SNI
boards, DS1 CONV circuit packs, and their lightwave transceivers are
functioning properly.
0 NO
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 8-306. Test #241 Expansion Interface 2-Way Transmission Test — Continued
Error
Code Test
Result
Description / Recommendation
Continued on next page