Avaya 555-233-116 - Manual (Page 138)

DS1/T1 CPE loopback jack
555-233-116 138 Issue 4 October 2002
Checking the integrity of local equipment
Before you go any further, make sure that the problem is actually on the DS1 span
by testing the equipment that connects to the span at the near end. Test the DS1
circuit pack, and perform any needed maintenance or repairs.
Busying out the DS1 circuit pack
Now take the DS1 circuit out of service.
NOTE:
If you have a G700 Media Gateway, substitute XXXVS for UUCSS in the
following command, where XXX is the administered number of the G700 (for
example, 002), and VS is the slot number on the G700 of the Media Module
(for example, V3). The V is not a variable and needs to be included in the
command exactly where shown. A sample address for a DS1 circuit pack on
a G700 Media Gateway might look like this: 002V3.
1. Once you are sure that the DS1 circuit pack and ICSU are functioning
correctly, go to the management terminal and busy out the DS1 circuit pack
by typing busyout board UUCSS, where UU is the cabinet number, C is
the carrier letter, and SS is the slot number of the DS1 board.
Administering the DS1 for the test
1. At the management terminal, open the DS1 administration form. Type
change ds1 UUCSS, where UU is the cabinet number, C is the carrier
letter, and SS is the slot number of the DS1 board.
2. Make sure that the near-end csu type field is set to integrated.
3. Change to page 2 of the DS1 administration form, and confirm that the
value of the TX LBO field is 0dB.
4. If the value of the TX LBO field is not 0dB, record the current value. Then
set the TX LBO field to 0dB for testing.
5. Press ENTER to make the changes, CANCEL to quit without changes.
Testing the integrity of the loopback circuit
Now perform the first part of the actual loopback test.
NOTE:
If you have a G700 Media Gateway, substitute XXXVS for UUCSS in the
following command, where XXX is the administered number of the G700 (for
example, 002), and VS is the slot number on the G700 of the Media Module
(for example, V3). The V is not a variable and needs to be included in the
command exactly where shown. A sample address for a DS1 circuit pack on
a G700 Media Gateway might look like this: 002V3.