Nortel Meridian 1 Administration And Maintenance page 375

Chapter 8 — Service changes and maintenance
4 Select test conditions
Enter XCON 0 and press the Enter key, if you wish to get only one
loopback test.
Enter one test period shown in XCON H 0-182, M 0-59, S 0-60 and press
the Enter key to select continuous loopback testing for a selected time
span where H 0-182 is 0 to 182 hours, M 0-59 is 0 to 59 minutes, and S
0-60 is 0 to 50 seconds.
For example: XCON H 1 conducts the test for one hour.
5 At the TEST prompt, enter 9 and press the Enter key.
Continue responding to the prompts to configure the loopback test as
follows:
Prompt Response
TEST 9
PATT x
TYPG 5
LOOP c
LBTY 4
LBTN c dsl#
TAG xx
6 Check the loopback test results.
The result is automatically displayed if you specified XCON 0 test
conditions, otherwise you must specify XSTA or XSTP with the test
TAG number to check the status.
If the results show BSDxxx messages, refer to the list and description of
these messages in this guide. The BSDxxx messages indicates the
possible problem causes, which you should check to isolate the problem.
Comment
Selects loopback at the SILC/UILC
x is the selected pattern, where x=0-7
MISP is generating and transmitting the pattern
MISP
card number,
number
Card is requested to loop back
The address of the looped back card, where c is
the card slot number and dsl# is the port.
If the loopback test is continuous, the system
tags the test with a number from 0 to 15.
Option 11C ISDN BRI Administration and Maintenance
Page 361 of 492
where
c is the card slot