Nortel 1000E Maintenance Manual page 91

Condition
System constantly
rebooting
Nortel logo is not lit or
fan is not running
Clearing MG 1000T Expansion faults
Table 31 "MG 1000T Expansion fault causes and actions" (page 91)
provides additional instructions for isolating faults in an MG 1000T
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 1000T 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
Copyright © 2007, Nortel Networks
.
Possible cause
Defective SSC card or
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 01.02 Standard
Release 5.0 20 June 2007
Clearing MG 1000T faults 91
Action
Replace the SSC card or 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)
Perform a circuit card test by entering: