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Server Alarms - Avaya Support

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Table 579: CSU Repeater Loopback Test (#1211) 3 of 3<br />

Error<br />

Code<br />

Test<br />

Result<br />

CPE Loopback Jack Test (#1212)<br />

CPE Loopback Jack Test (#1212)<br />

PASS The RLB test executed successfully. The test pattern was transmitted and<br />

received successfully over the connection from the DS1 board to the<br />

far-edge of the 120A CSU module/T1 sync splitter.<br />

1. Enter release board location to release the trunks or ports.<br />

0 NO<br />

BOARD<br />

Description / Recommendation<br />

See NO BOARD for repair procedures<br />

3 of 3<br />

This test is destructive.<br />

For documentation purposes, the term DS1 applies to the following:<br />

DS1 Interface circuit packs<br />

DS1 Interface media modules<br />

UDS1 circuit packs.<br />

The CPE Loopback Jack (CLJ-LB) test causes a loopback at the CPE loopback jack and tests<br />

the building wiring connection between the DS1 board and the CPE loopback jack.<br />

The test is highly destructive and can only be initiated by entering the command<br />

test ds1-loop location cpe-loopback-jack-test-begin [number-of-bits<br />

bit-pattern]. Enter a loopback activation code on the command line or use the default code<br />

(0x47F).<br />

Enter busyout board to busy out all trunks or ports on the DS1 Interface circuit pack before<br />

running the CPE Loopback Jack test.<br />

The CPE Loopback Jack test has the DS1 Interface circuit pack transmit a loopback activation<br />

code to the CPE loopback jack, waits up to 10 seconds for return of the code to verify the<br />

loopback has been established, transmits a framed 3-in-24 test pattern, begins counting bit<br />

errors in the received test pattern, and returns a PASS result to indicate that the pattern was<br />

successfully sent. If the loopback is not established within the 10 seconds, the test returns FAIL.<br />

The status of the CPE Loopback Jack test appears in the error log as Error Type 3900. Several<br />

distinct aux values give information on the status of the test.<br />

Enter list measurements ds1 summary to show the length of time the test has been<br />

running (Test Duration field) and number of bit errors detected (Loopback/Span Test<br />

Communication Manager Release 5.0 Issue 4 January 2008 1933

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