Avaya 03-300430 User Manual

This test checks TN775D on-board circuitry associated with the serial links to the Expansion 
Interface circuit packs. A request is sent to the PN’s Maintenance circuit pack over the active 
link via the active Expansion Interface circuit pack serial interface circuitry to test the serial 
interface circuitry of the standby Expansion Interface circuit pack link. If a response is received, 
then by definition the serial interface circuitry associated with the active link is good.
The PN’s Maintenance circuit pack has 3 separate serial interfaces, one to each of the 
following:

●

Management terminal which is tested by Test #228

●

Active EI circuit pack which is tested by Test #229

●

Standby EI circuit pack which is tested by Test #229

PASS

The serial interface circuitry on the PN’s Maintenance circuit pack which 
controls the PN-connected terminal is functioning properly. If there are still 
troubles with the PN G3-MT terminal, the problem may be one of the 
following:

1. The PN-connected terminal is not configured properly. The 

connection between the terminal and the PN’s Maintenance circuit 
pack must be set up at 9600 bps.

2. The serial link from the back of carrier A to the PN terminal may be 

defective. The serial link consists of the connector on the back of 
carrier A labeled TERM and the ribbon cable running to the terminal.

3. The terminal may be defective. Try another terminal.

4. Since this test is not 100 percent accurate, there may still be problems 

with the PN’s Maintenance circuit pack.

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1000

ABRT

System resources required to run this test are not available.

1. Retry the command at 1-minute intervals up to 5 times.

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