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Server Alarms - Avaya Support

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Communication Manager Maintenance Object Repair Procedures<br />

Table 545: Far-End DS1 Converter Circuit Pack Loopback Test (#788) 3 of 3<br />

Error<br />

Code<br />

Test<br />

Result<br />

0 NO<br />

BOARD<br />

Description / Recommendation<br />

See NO BOARD for the repair procedures.<br />

Far-End Lightwave Transceiver<br />

Loopback Test (#789)<br />

This test is destructive.<br />

This test is executed on the TN574 DS1 Converter circuit pack only. DS1 Facilities Connectivity<br />

Test (#790) covers this testing on the TN1654 DS1 Converter.<br />

This test starts at the specified DS1 converter circuit pack location and loops at the Fiber Optic<br />

Terminator (lightwave transceiver) that is connected to the DS1 converter circuit pack at the<br />

other end of the DS1 converter complex. See Figure 143: Far-End Lightwave Transceiver<br />

Loopback Test.<br />

The test sends digital data through every DS1 facility channel. Two different test patterns are<br />

used, these are hexadecimal values 55 and AA.<br />

For a standard-, duplex-, or high-reliability system (no PNC duplication), this test can only be<br />

executed at the endpoint that is closer to the server relative to the neighbor DS1 converter<br />

circuit pack because of its impact on the system control links. The completion of the test will be<br />

delayed in this configuration to wait for the recovery of the system control links. For a<br />

critical-reliability system (PNC duplication), the test can be executed on any DS1 converter<br />

circuit pack. This test runs on the DS1C-BD (DS1 Converter Circuit Pack) maintenance object.<br />

1854 Maintenance <strong>Alarms</strong> for <strong>Avaya</strong> Communication Manager, Media Gateways and <strong>Server</strong>s<br />

3 of 3

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