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DEFINITY Enterprise Communications Server Release 5

Maintenance and Test for R5vs/si

555-230-123

Issue 1

April 1997

Maintenance Object Repair Procedures

Page 10-1549UDS1-BD (UDS1 Interface Circuit Pack)

Internal Loop Around Test (#135)

This test is destructive.

The Internal Loop Around Test is run by looping the transmitted DS1 bit stream

back into the UDS1’s board receiver. The loop occurs just before the DS1 facility

interface. The test is highly destructive and can only be initiated by a system

technician-demanded reset board PCSS command.

All trunks or ports on the UDS1 Interface circuit pack must be busied out via the

system technician busyout board command before running the Internal Loop

Around Test. When the Internal Loop Around Test is initiated, maintenance

software sends appropriate messages to the UDS1 Interface circuit pack to start

the test. The test uses the Tone Generator and Tone Detector to exercise a bit

pattern consistency test for all ports. If the transmitted and received bit patterns

on a trunk or port are different, the test fails.

0NO

BOARD

The test could not relate the internal ID to the port (no

board). This could be due to incorrect translations, no

board is inserted, an incorrect board is inserted, or an

insane board is inserted.

1. Ensure that the board translations are correct.

Execute the add ds1 PCSS command to administer

the UDS1 interface if it is not already administered.

2. If the board was already administered correctly,

check the error log to determine whether the board

is hyperactive. If this is the case, the board is shut

down. Reseating the board will re-initialize the

board.

3. If the board was found to be correctly inserted in

step 1, then issue the busyout board command.

4. Issue the reset board command.

5. Issue the release busy board command.

6. Issue the test board long command.

This should re-establish the linkage between the internal

ID and the port.

Table 10-458. TEST #53 SAKI Sanity Test — Continued

Error

Code

Test

Result Description/ Recommendation

Continued on next page