Demand test descriptions and error codes - Avaya Support

LEDs
EXP-INTF (Expansion Interface Circuit Pack)
3. After the SREPN slide switch has been restored to the normal position, test the
connectivity to EI LAPD link, by using the suggested procedures outlined in this MO.
4. After normal service is returned to the SREPN, the SRPPN will be in an alarmed state.
This is normal for an SRPPN and indicates that the:
● SRSwitch (TN2301) has disconnected it from its neighbor (EI in the SREPN)
● SRPPN is no longer in control.
Connectivity has been re-established between the EI in the SREPN and its counterpart EI circuit
pack in the PN. The system is now in a normal EI configuration.
SREPN Expansion Interface
The EI circuit pack has red, green, and amber LEDs. The red and green LEDs display the
standard conditions:
● Red indicates an alarm condition.
● Green indicates maintenance testing in progress.
The amber LED provides useful visual status information:
● Active EI circuit packs:
- Have their amber LED on solid (for an inter-EPN EI in a direct connect system)
- Blink a pattern of 2 seconds on and 200 ms off.
● The standby PNC EI circuit packs should have their amber LEDs off.
Another way to determine which PNC (and therefore, which EIs in an EPN) is active and which
is standby, use status port-network and status PNC.
See Table 107: Expansion Interface Circuit Pack Amber LED Flashing States for the possible
EI amber LED states.
Table 107: Expansion Interface Circuit Pack Amber LED Flashing States 1 of 2
Condition LED On LED Off
Fiber Out-of-Frame (a) 0.1 second 0.1 second
In Frame-No Neighbor (b) 0.5 second 0.5 second
Expansion Interface Active (c) 2 second 0.2 second
Expansion Interface Active (d) solid on never off
1 of 2
Issue 5 May 2009 433