Perform DS1/E1/DS3/E3 transmission test

Procedure 14-8: Perform DS1/E1/DS3/E3 transmission test

Overview

Use this procedure to test a DS1/E1 or DS3/E3 port at a stand-alone Alcatel-Lucent 1850 TSS-5 shelf or in a Alcatel-Lucent 1850 TSS-5 network.

If this procedure is being used to perform end-to-end testing in a Alcatel-Lucent 1850 TSS-5 network, it is assumed that the complete Alcatel-Lucent 1850 TSS-5 network configuration (for example, UPSR/SNCP) has already been established/tested and that only a particular port is being tested at this time.

In end-to-end testing, one shelf is referred to as the near end and the other shelf as the far end. These designations are arbitrary; either shelf can be the near-end or the far-end shelf.

Privilege level

You must log in as either a Privileged or General user to complete this procedure.

Required equipment

In addition to the equipment listed in Required equipment, a DS1/E1/DS3/E3 Test Set is required.

Before you begin

Prior to performing this procedure:

Refer Before you begin in this chapter.
Refer to Laser safety and Electrostatic discharge in Chapter 1, Safety.
Obtain the work instructions for this procedure and note the assigned AIDs.
Select View → Equipment to access the required port and verify that the port parameters have been provisioned correctly (according to the work instructions) at the terminating Alcatel-Lucent 1850 TSS-5 shelf(s) of the circuit being tested.

If required, select Configuration → Equipment to make port provisioning changes.
Refer to the following procedures for more detailed information.
- Procedure 4-5: Provision VLNC50/52/55 DS1/E1 ports for service
- Procedure 4-8: Provision VLNC50/52/55 DS3/E3 ports for service

Steps

Complete the following steps to perform a DS1/E1/DS3/E3 transmission test.

Important!

Proper terminating and pass-through cross-connections must exist at each shelf (including stand-alone shelves) to establish continuity for the circuit being tested.

Select View → Cross-Connections to obtain a cross-connection list and verify that the proper cross-connections exist for the circuit to be tested.

If required, select Configuration → Cross-Connections to access the Cross-Connection Wizard and create the proper VT1.5/STS-n/VC-n cross-connections for the DS1/E1/DS3/E3 circuit to be tested.

Reference:

Alcatel-Lucent 1850 Transport Service Switch (TSS-5) TL1 Command Guide for MSPP

If the transmission test is to be performed...

Then...

at a stand-alone shelf in the Terminal direction (toward the fiber),

At the Main circuit pack, loop back the required fibers.

Refer to Procedure 14-6: Connect optical loopback.

in a Alcatel-Lucent 1850 TSS-5 network (end-to-end),

At the far-end cross-connect panel or equivalent connection point, connect a patch cord from the OUT jack to the IN jack associated with the DS1/E1/DS3/E3 circuit being tested.

Reference:

The following figures show the test arrangements.

Figure 14-8: Stand-alone shelf with Main circuit pack loop back

Figure 14-9: End-to-end circuit with far-end loop back

If the transmission test is to be performed...	Then...
at a stand-alone shelf in the Terminal direction (toward the fiber),	Connect a test set to the port to be tested at the cross-connect panel or equivalent connection point and apply a DS1/E1/DS3/E3 test signal.
in a Alcatel-Lucent 1850 TSS-5 network (end-to-end),	At the Near End, connect a test set to the port to be tested at the cross-connect panel or equivalent connection point and apply a DS1/E1/DS3/E3 test signal.

Was the test successful (error free)?

If...	Then...
Yes	Proceed to Step 5.
No	Proceed to Step 17.

Are you performing this test for a stand-alone Alcatel-Lucent 1850 TSS-5 shelf or for end-to-end testing within a Alcatel-Lucent 1850 TSS-5 network?

If...	Then...
Stand-alone test,	Continue with Step 6.
End-to-end test,	Proceed to Step 11.

Remove any patch cords/fibers used to loop back the circuit under test and disconnect the test set from the cross-connect panel or equivalent connection point, if required.

Delete any cross-connections entered to perform this procedure.

Reference:

Select Configuration → Update System → Update All to retire existing alarms caused by this procedure.

If required, repeat Step 1 through Step 8 for each DS1/E1/DS3/E3 circuit to be tested.

STOP! End of Procedure.

At the near end, disconnect the test set from the cross-connect panel or equivalent connection point, if required.

At the near end and far end, delete any cross-connections entered to perform this procedure.

Reference:

At the far end, remove the patch cords at the cross-connect panel or equivalent connection point for the circuit under test.

At the near end and far end, select Configuration → Update System → Update All to retire existing alarms caused by this procedure.

If required, return to Step 1 and repeat this procedure for each DS1/E1/DS3/E3 circuit to be tested.

STOP! End of Procedure.

Has the circuit pack that failed this test been replaced?

If...	Then...
Yes	Continue with Step 19.
No	Proceed to Step 18.

Replace the circuit pack and repeat this procedure.

Reference:

Alcatel-Lucent 1850 Transport Service Switch (TSS-5) Maintenance and Trouble-Clearing Guide

Trouble may be in the cross-connect panel wiring, interface wiring, VT1.5/STS-n/VC-n cross-connections in the network, or the shelf backplane. If you continue to experience problems, contact your next level of support.

Reference:

Alcatel-Lucent 1850 Transport Service Switch (TSS-5) Maintenance and Trouble-Clearing Guide

End of steps