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1491

DEFINITY Enterprise Communications Server Release 5

Maintenance and Test for R5vs/si

555-230-123

Issue 1

April 1997

Maintenance Object Repair Procedures

Page 10-549DS1-BD (DS1 Interface Circuit Pack)

1311 FAIL The Integrated CSU (I-CSU) Module Equipment Loopback (ELB) test (#1210)

failed. This test is executed by the ICSU during ICSU power-up/reset (TN767E

board physically inserted and 120A CSU Module already installed) or when

the 120A 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.

1. Execute test ds1-loop PCSS ds1/csu-loopback-tests.

2. If the ELB test continues to fail, then either the TN767E 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 the problem to one

of these areas. Begin by replacing the CSU Module and running the

est

ds1-loop PCSS ds1/csu-loopback-tests command again.

3. If the ELB test continues to fail, then replace the TN767E board and run

test ds1-loop PCSS ds1/csu-loopback-tests again.

4. If the ELB test continues to fail, the problem could be in the I/O cable

between the backplane and the CSU module.

1312 FAIL The Integrated CSU (I-CSU) Module Repeater Loopback (RLB) test (#1211)

failed. This test is executed by the ICSU during ICSU power-up/reset (TN767E

board physically inserted and 120A 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

est ds1-loop PCSS

ds1/csu-loopback-tests.

1. Execute test ds1-loop PCSS ds1/csu-loopback-tests.

2. If the RLB test continues to fail, then replace the CSU Module.

3. Run this test again.

1313 FAIL The TN767E circuit pack could not deactivate a CPE Loopback Jack

loopback.

1. Execute

est ds1-loop PCSS end-loopback/span-test.

2. If the attempt to deactivate the CPE Loopback Jack is not successful,

check the cabling and investigate the problem at the CPE Loopback

Jack.

3. Run the test again.

1314 FAIL The TN767E circuit pack could not deactivate a far-end CSU loopback.

1. Execute test ds1-loop PCSS end-loopback/span-test.

Table 10-150. TEST #138 Loss of Signal Alarm Inquiry Test — Continued

Error

Code

Test

Result Description/ Recommendation

Continued on next page