NPT-1020 Installation and Maintenance Manual
Commissioning Tests
ECI Telecom Ltd. Proprietary
6-7
4.
Power on the NE and wait for it to perform the initial download to all cards/modules in the platform.
This can take five minutes.
5.
Verify that the NE is connected to the management station and that there are no relevant alarms in
the test equipment or at the management station.
6.3.6
Traffic Stability Test
This test verifies that traffic operates according to ITU-T standards.
To perform traffic stability test:
1.
Create one unprotected trail of any rate between two NEs.
2.
Connect test equipment to one NE and perform a loopback at the other NE (in the relevant endpoint
ports).
3.
Run this test for the appropriate time interval according to the following table.
4.
Verify that no alarms appear in the test equipment or at the management station. You should achieve
an error-free rate of 1 x 10
-11
for 2 Mbps and 1 x 10
-12
for all other rates.
Table
6-8: Traffic stability test time intervals
2 Mbps
34/45 Mbps
STM-1/VC-3
STM-4/VC-12
14 hours
7 hours
120 minutes
30 minutes
6.3.7
Path Protection and Nonretrieval Test
This test verifies that SNCP traffic operates properly when a failure occurs.
To perform a path protection and nonretrieval test:
1.
Create one protected trail of any rate between two NEs.
2.
Connect test equipment to one NE and perform a loopback at the other NE (in the relevant endpoint
ports).
3.
Disconnect one of the fibers in the active path of the trail. Short alarm bursts of less than 50 msec
appear in the test equipment, and the management station reports an alarm in the active path of the
trail.
4.
Verify that the trail works properly on the protection path.
5.
Reconnect the optical fiber. The trail remains on the protection path (nonretrieve mode), and there is
no alarm in the test equipment.
