Avaya DEFINITY Server CSI Maintenance Manual page 1076

l. BLB failure. This error occurs when the DS1 Board Loopback (BLB)
demand test fails. Repeat the test using the following commands: busyout
board UUCSS, test ds1-loop UUCSS ds1/csu-loopback-tests, release
board UUCSS. If the BLB test continues to fail, then the TN767E circuit
pack needs to be replaced.
m. ELB failure. This error occurs when the Integrated CSU (I-CSU) Module
Equipment Loopback (ELB) test fails. This test is executed during
I-CSU/T1 Sync Splitter power-up/reset (i.e., the TN767E board is
physically inserted and the CSU Module/T1 Sync Splitter is already
installed) or when the CSU Module/T1 Sync Splitter is plugged on to an
already initialized DS1 board. The ELB test is also executed as part of the
command test ds1-loop UUCSS ds1/csu-loopback-tests.
Attempt to clear the alarm via the following commands: busyout board
UUCSS, test ds1-loop UUCSS ds1/csu-loopback-tests, and release
board UUCSS. If the ELB test continues to fail, then either the TN767E
board, the CSU Module, the T1 Sync Splitter, or the I/O cable between the
backplane and the CSU Module/T1 Sync Splitter (or any combination
thereof) has failed. Attempt to isolate where the failure is occurring by
re-executing the test. Escalate this problem.
n. RLB failure. This error occurs when the Integrated CSU (I-CSU) Module
Repeater Loopback (RLB) test fails. This test is executed during I-CSU/T1
Sync Splitter power-up/reset (i.e., the TN767E board is physically inserted
and the CSU Module/T1 Sync Splitter is already installed) or when the CSU
Module/T1 Sync Splitter is plugged on to an already initialized DS1 board.
The RLB test is also executed as part of the command test ds1-loop
UUCSS ds1/csu-loopback-tests.
Attempt to clear the alarm via the following commands: busyout board
UUCSS, test ds1-loop UUCSS ds1/csu-loopback-tests, and release
board UUCSS. If the RLB test continues to fail, then the CSU Module/T1
Sync Splitter needs to be replaced.
o. CPE Loopback Jack deactivation error. This error occurs when the TN767E
circuit pack could not deactivate a CPE Loopback Jack loopback.
Attempt to clear the alarm via the following commands: busyout board
UUCSS, test ds1-loop UUCSS end-loopback/span-test, and release
board UUCSS. If the attempt to deactivate the CPE Loopback Jack
loopback continues to fail, other steps must be taken to deactivate the
loopback.
p. Far CSU Loopback deactivation error. This error occurs when the TN767E
circuit pack could not deactivate a far-end CSU loopback on
power-up/reset or upon software request.
Attempt to clear the alarm via the following commands: busyout board
UUCSS, test ds1-loop UUCSS end-loopback/span-test, release board
UUCSS. If the attempt to deactivate the Far CSU loopback continues to
fail, then escalate the problem.
1076
Issue 5 October 2002 555-233-119