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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 10-1444UDS1-BD (UDS1 Interface Circuit Pack)
10
m. DS1 circuit pack suffix incorrect for CSU Module. The
Near-End CSU Type
field on the
add ds1
form has been administered as
integrated
but the
DS1 circuit pack is not a TN464F or later suffix UDS1 board.
If the 120A1 CSU Module is to be used, remove the circuit pack and
replace it with a TN464F or later suffix board. Otherwise, use the
change
ds1
command to change the
Near-End CSU Type
field to
other
.
n. BLB failure. This error occurs when the DS1 Board Loopback (BLB)
demand test fails. Repeat the test using the following commands:
busyout board PCSS
,
test ds1-loop PCSS ds1/csu-loopback-tests
,
release board PCSS
. If the BLB test continues to fail, then the TN464F
circuit pack needs to be replaced.
o. ELB failure. This error occurs when the Integrated CSU (I-CSU) Module
Equipment Loopback (ELB) test fails. This test is executed by the I-CSU
during I-CSU power-up/reset (i.e.- TN464F board physically inserted and
120A1 CSU Module already installed) or when the 120A1 CSU Module is
plugged on to an already initialized DS1 board. The ELB test is also
executed as part of the command
test ds1-loop PCSS
ds1/csu-loopback-tests
.
Attempt to clear the alarm via the following commands:
busyout board
PCSS
,
test ds1-loop PCSS ds1/csu-loopback-tests
,
release board PCSS
.
If the ELB test continues to fail, then either the TN464F board, the CSU
Module, or the I/O cable between the backplane and the CSU module (or
any combination thereof) has failed. Attempt to isolate where the failure is
occurring by reexecuting the test by replacing one piece of hardware at a
time.
p. RLB failure. This error occurs when the Integrated CSU (I-CSU) Module
Repeater Loopback (RLB) test fails. This test is executed by the I-CSU
during I-CSU power-up/reset (i.e.- TN464F board physically inserted and
120A1 CSU Module already installed) or when the 120A1 CSU Module is
plugged on to an already initialized DS1 board. The RLB test is also
executed as part of the command
test ds1-loop PCSS
ds1/csu-loopback-tests
.
Attempt to clear the alarm via the following commands:
busyout board
PCSS
,
test ds1-loop PCSS ds1/csu-loopback-tests
,
release board PCSS
.
If the RLB test continues to fail, then the CSU Module needs to be
replaced.
q. CPE Loopback Jack deactivation error. This error occurs when the
TN464F circuit pack could not deactivate a CPE Loopback Jack loopback
on power-up/reset or upon software request.
Attempt to clear the alarm via the following commands:
busyout board
PCSS
,
test ds1-loop PCSS end-loopback/span-test
,
release board PCSS
.
If the attempt to deactivate the CPE Loopback Jack loopback continues to
fail, other steps must be taken to deactivate the loopback.