Clearing Mg 1000E Expansion Faults - Nortel Communication Server 1000E Maintenance Manual

Table 30
Core fault causes and actions (cont'd.)
Condition
System constantly
rebooting
Nortel logo is not lit or
fan is not running

Clearing MG 1000E Expansion faults

Table 31 "MG 1000E Expansion fault causes and actions" (page
91) provides additional instructions for isolating faults in an MG 1000E
Expansion. Initial indicators can be red LEDs on the circuit cards or a
system message indicating a circuit card or units on it are disabled. Look
up all system messages in the Software Input/Output Reference – System
Messages NN43001-712 and follow the instructions given.
Table 31
MG 1000E Expansion fault causes and actions
Condition
Software does not load
Layer 7 LED is Red
Link LED is off or
flickering
Red LED on SSC
Intermittent trunk
problems
Multiple system
messages about an
MG 1000T Expansion
Possible cause
Defective Media Gateway
Loss of AC power
Defective Media Gateway
Possible cause
Improper Security
Device
Defective NTDU0606,
NTTK34, or CAT5 IP
cable
Defective NTDK20 SSC
card in MG 1000T
Nortel Communication Server 1000
Communication Server 1000E Maintenance
NN43041-700 04.01 4 June 2010
Copyright © 2004-2010 Nortel Networks. All Rights Reserved.
Clearing MG 1000E Expansion faults 91
Action
Replace the Media Gateway.
Restore AC power.
Replace the Media Gateway.
Enable and test the cards by entering:
LD 30
TEST
Action
Positively identify the NT SDID on the MG
1000T Expansion (eight digits engraved
on the face of the Security Device beneath
the Nortel logo). Verify that it matches the
NT SDID on the MG 1000T Core Security
Device.
Inspect the cable connections visually and
check them physically. Replace defective
cables as required.
Disable the MG 1000T Expansion by
entering:
LD 32
DISS x (where x is the number for the MG
1000T Expansion, 1 through 4)
Replace the SSC card.
Enable the MG 1000T Expansion by entering:
LD 32
ENLS x (where x is the number for the MG
1000T Expansion, 1 through 4)