DEFINITY Enterprise Communications Server Release 7
Maintenance for R7r
555-230-126
Issue 4
June 1999
Maintenance Object Repair Procedures
9-688DS1 CONV-BD
9
For TN574 DS1 Converter circuit packs, this test is executed by sending digital
data through each timeslot of every DS1 facility channel. Two different test
patterns are used, these are hexadecimal values 55 and AA.
For TN1654 DS1 Converter circuit packs, this test has been enhanced to provide
error codes that point to the exact fault. Rather than simply reporting a failure of
the connectivity test, the TN1654 test specifically identifies the two DS1 facilities
that are cross-connected at the near and far ends of the DS1 converter complex.
In addition, a fault code will indicate the condition of not being able to loop-up
the far-end as required to run the test due to the packet DS1 facility being down.
The TN1654 connectivity test sends digital data through only one timeslot.
Instead of looping back the facility to itself, the TN1654 version of the test
loops-up the other three facilities. If the test pattern comes back, the firmware
fails the test due to an incorrect connection between DS1 facilities. It should be
noted that this test will pass and give no indication of problems if the non-packet
facilities are down.
On a Standard and High Reliability System (no PNC duplication), this test can
only be executed at the end-point which is closer to the SPE relative to the
neighbor DS1 CONV circuit pack because of its impacts on the system control
links. In addition, for TN574 DS1 CONV boards, the completion of the test will be
delayed in this configuration to wait for the recovery of the system control links.
On a Critical Reliability System (PNC Duplication), test can be executed at any
DS1 CONV circuit pack.
Table 9-266. TEST #790 DS1 Facilities Connectivity Loopback Test
Error
Code
Tes t
Result Description/ Recommendation
2000 ABORT Timed out while waiting for a response from the circuit pack.
2100 ABORT Could not allocate the necessary system resources to run this test.
2300 ABORT The downlink message necessary to run this test could not be sent.
2301 ABORT The timer could not be set before sending the downlink message necessary to
run this test.
1. Retry the command at 1-minute intervals a maximum of 3 times.
2316 ABORT Fiber link is not administered. Administer the DS1 CONV fiber link via the add
fiber-link command.
2321 ABORT DS1 CONV circuit pack is not busied out. Busyout the DS1 CONV circuit pack
via the busyout board command.
2332 ABORT The test was aborted because it cannot be run at the far-end with this system
configuration (PNC simplex) when there is only one DS1-FAC available (the link
would be lost and no test results would be seen at the SPE). Run the test at the
other end of the DS1C complex.
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