Avaya 03-300430 User Manual

3. Reseat the suspect circuit pack.

CAUTION:

This procedure can cause a partial or total service outage. Consult thoroughly the 
documentation for the associated maintenance object before proceeding. 
Observe the precautions and procedures described above.

4. Inspect the backplane connectors for bent pins.

5. If the system seems to be functioning correctly, but the circuit pack in question will not 

communicate with the system, replace the circuit pack.

The Expansion Interface (EI) TN570 circuit pack has the standard red, green and yellow LEDs. 
The red and green LEDs have the traditional meaning, where red indicates an alarm condition, 
and green indicates testing in progress.
The yellow LED displays various flashing patterns to provide status information useful in 
isolating faults in the fiber link and other components connected to the fiber link. 

on page 259 illustrates the EI yellow 

LED states.

0.1 sec

0.1 sec

Fiber Out-of-Frame. This state indicates a failure of test #989. This may 

be caused by absence of the opposite end EI or Switch Node Interface 

(SNI), a broken or missing fiber, or a missing lightwave transceiver on 

either endpoint.

0.5 sec

0.5 sec

In Frame — No Neighbor. This state corresponds to a failure of test # 

237, usually due to a failure of this EI or of the EI or SNI at the other end 

of the fiber.

2 sec

0.2 sec

EI Active. This is the normal state of an active EI that is an archangel of 

an EPN.

solid on

EI Active. This is the normal state for an active EI that is not an EPN 

archangel. These include EPN EIs connected to other EPN EIs in direct 

connect configurations, and EIs located in the processor port network.

solid off

EI Standby. This is the normal state for a standby EI in systems with a 

duplication option.